Index

Package: Widget

Description

package Gtk.Widget is

GtkWidget is the base class all widgets in GTK+ derive from. It manages the widget lifecycle, states and style. == Height-for-width Geometry Management == GTK+ uses a height-for-width (and width-for-height) geometry management system. Height-for-width means that a widget can change how much vertical space it needs, depending on the amount of horizontal space that it is given (and similar for width-for-height). The most common example is a label that reflows to fill up the available width, wraps to fewer lines, and therefore needs less height.

Height-for-width geometry management is implemented in GTK+ by way of five virtual methods: * Gtk.Widget.GObject_Class.get_request_mode * Gtk.Widget.GObject_Class.get_preferred_width * Gtk.Widget.GObject_Class.get_preferred_height * Gtk.Widget.GObject_Class.get_preferred_height_for_width * Gtk.Widget.GObject_Class.get_preferred_width_for_height There are some important things to keep in mind when implementing height-for-width and when using it in container implementations.

The geometry management system will query a widget hierarchy in only one orientation at a time. When widgets are initially queried for their minimum sizes it is generally done in two initial passes in the Gtk.Enums.Gtk_Size_Request_Mode chosen by the toplevel.

For example, when queried in the normal Gtk.Enums.Height_For_Width mode: First, the default minimum and natural width for each widget in the interface will be computed using Gtk.Widget.Get_Preferred_Width. Because the preferred widths for each container depend on the preferred widths of their children, this information propagates up the hierarchy, and finally a minimum and natural width is determined for the entire toplevel. Next, the toplevel will use the minimum width to query for the minimum height contextual to that width using Gtk.Widget.Get_Preferred_Height_For_Width, which will also be a highly recursive operation. The minimum height for the minimum width is normally used to set the minimum size constraint on the toplevel (unless Gtk.Window.Set_Geometry_Hints is explicitly used instead).

After the toplevel window has initially requested its size in both dimensions it can go on to allocate itself a reasonable size (or a size previously specified with Gtk.Window.Set_Default_Size). During the recursive allocation process it's important to note that request cycles will be recursively executed while container widgets allocate their children. Each container widget, once allocated a size, will go on to first share the space in one orientation among its children and then request each child's height for its target allocated width or its width for allocated height, depending. In this way a Gtk.Widget.Gtk_Widget will typically be requested its size a number of times before actually being allocated a size. The size a widget is finally allocated can of course differ from the size it has requested. For this reason, Gtk.Widget.Gtk_Widget caches a small number of results to avoid re-querying for the same sizes in one allocation cycle.

See <link linkend="container-geometry-management">GtkContainer's geometry management section</link> to learn more about how height-for-width allocations are performed by container widgets.

If a widget does move content around to intelligently use up the allocated size then it must support the request in both Gtk_Size_Request_Modes even if the widget in question only trades sizes in a single orientation.

For instance, a Gtk.Label.Gtk_Label that does height-for-width word wrapping will not expect to have Gtk.Widget.GObject_Class.get_preferred_height called because that call is specific to a width-for-height request. In this case the label must return the height required for its own minimum possible width. By following this rule any widget that handles height-for-width or width-for-height requests will always be allocated at least enough space to fit its own content.

Here are some examples of how a Gtk.Enums.Height_For_Width widget generally deals with width-for-height requests, for Gtk.Widget.GObject_Class.get_preferred_height it will do: static void foo_widget_get_preferred_height (GtkWidget *widget, gint *min_height, gint *nat_height) { if (i_am_in_height_for_width_mode) { gint min_width; GTK_WIDGET_GET_CLASS (widget)->get_preferred_width (widget, &min_width, NULL); GTK_WIDGET_GET_CLASS (widget)->get_preferred_height_for_width (widget, min_width, min_height, nat_height); } else { ... some widgets do both. For instance, if a GtkLabel is rotated to 90 degrees it will return the minimum and natural height for the rotated label here. } } And in Gtk.Widget.GObject_Class.get_preferred_width_for_height it will simply return the minimum and natural width: static void foo_widget_get_preferred_width_for_height (GtkWidget *widget, gint for_height, gint *min_width, gint *nat_width) { if (i_am_in_height_for_width_mode) { GTK_WIDGET_GET_CLASS (widget)->get_preferred_width (widget, min_width, nat_width); } else { ... again if a widget is sometimes operating in width-for-height mode (like a rotated GtkLabel) it can go ahead and do its real width for height calculation here. } } Often a widget needs to get its own request during size request or allocation. For example, when computing height it may need to also compute width. Or when deciding how to use an allocation, the widget may need to know its natural size. In these cases, the widget should be careful to call its virtual methods directly, like this: == Widget calling its own size request method. == GTK_WIDGET_GET_CLASS(widget)->get_preferred_width (widget), &min, &natural); It will not work to use the wrapper functions, such as Gtk.Widget.Get_Preferred_Width inside your own size request implementation.

These return a request adjusted by Gtk.Size_Group.Gtk_Size_Group and by the Gtk.Widget.GObject_Class.adjust_size_request virtual method. If a widget used the wrappers inside its virtual method implementations, then the adjustments (such as widget margins) would be applied twice. GTK+ therefore does not allow this and will warn if you try to do it.

Of course if you are getting the size request for *another* widget, such as a child of a container, you *must* use the wrapper APIs. Otherwise, you would not properly consider widget margins, Gtk.Size_Group.Gtk_Size_Group, and so forth. == Style Properties == <structname>GtkWidget</structname> introduces 'style properties' - these are basically object properties that are stored not on the object, but in the style object associated to the widget. Style properties are set in <link linkend="gtk-Resource-Files">resource files</link>. This mechanism is used for configuring such things as the location of the scrollbar arrows through the theme, giving theme authors more control over the look of applications without the need to write a theme engine in C.

Use Gtk.Widget.Install_Style_Property to install style properties for a widget class, Gtk.Widget.Find_Style_Property or gtk_widget_class_list_style_properties to get information about existing style properties and Gtk.Widget.Style_Get_Property, gtk_widget_style_get or gtk_widget_style_get_valist to obtain the value of a style property. == GtkWidget as GtkBuildable == The GtkWidget implementation of the GtkBuildable interface supports a custom <accelerator> element, which has attributes named key, modifiers and signal and allows to specify accelerators. == A UI definition fragment specifying an accelerator == <object class="GtkButton"> <accelerator key="q" modifiers="GDK_CONTROL_MASK" signal="clicked"/> </object> In addition to accelerators, <structname>GtkWidget</structname> also support a custom <accessible> element, which supports actions and relations. Properties on the accessible implementation of an object can be set by accessing the internal child "accessible" of a <structname>GtkWidget</structname>. == A UI definition fragment specifying an accessible == <object class="GtkButton" id="label1"/> <property name="label">I am a Label for a Button</property> </object> <object class="GtkButton" id="button1"> <accessibility> <action action_name="click" translatable="yes">Click the button.</action> <relation target="label1" type="labelled-by"/> </accessibility> <child internal-child="accessible"> <object class="AtkObject" id="a11y-button1"> <property name="accessible-name">Clickable Button</property> </object> </child> </object> Finally, GtkWidget allows style information such as style classes to be associated with widgets, using the custom <style> element: == A UI definition fragment specifying an style class == <object class="GtkButton" id="button1"> <style> <class name="my-special-button-class"/> <class name="dark-button"/> </style> </object>

Packages

Widget_List (new Glib.Glist.Generic_List)

package Widget_List is new Generic_List (Gtk.Widget.Gtk_Widget);

Widget_SList (new Glib.GSlist.Generic_SList)

package Widget_SList is new Generic_SList (Gtk.Widget.Gtk_Widget);

Gtk_Align_Properties (new Glib.Generic_Properties.Generic_Internal_Discrete_Property)

package Gtk_Align_Properties is
      new Generic_Internal_Discrete_Property (Gtk_Align);

Gtk_Widget_Help_Type_Properties (new Glib.Generic_Properties.Generic_Internal_Discrete_Property)

package Gtk_Widget_Help_Type_Properties is
      new Generic_Internal_Discrete_Property (Gtk_Widget_Help_Type);

Add_Tick_Callback_User_Data (generic)

Classes

Gtk_Widget_Record

type Gtk_Widget_Record is new GObject_Record with null record;

Ancestors:

Immediate Children:

Primitive operations:

Add_Accelerator
Add_Device_Events
Add_Mnemonic_Label
Add_Tick_Callback
Can_Activate_Accel
Child_Notify
Compute_Expand
Create_Pango_Context
Create_Pango_Layout
Device_Is_Shadowed
Drag_Check_Threshold
Drag_Dest_Add_Image_Targets
Drag_Dest_Add_Text_Targets
Drag_Dest_Add_Uri_Targets
Drag_Dest_Get_Track_Motion
Drag_Dest_Set_Proxy
Drag_Dest_Set_Track_Motion
Drag_Dest_Unset
Drag_Get_Data
Drag_Highlight
Drag_Source_Add_Image_Targets
Drag_Source_Add_Uri_Targets
Drag_Source_Set_Icon_Pixbuf
Drag_Source_Unset
Drag_Unhighlight
Ensure_Style
Freeze_Child_Notify
Get_Allocated_Height
Get_Allocated_Width
Get_Allocation
Get_Ancestor
Get_App_Paintable
Get_Can_Default
Get_Can_Focus
Get_Child_Requisition
Get_Child_Visible
Get_Composite_Name
Get_Device_Enabled
Get_Device_Events
Get_Direction
Get_Double_Buffered
Get_Frame_Clock
Get_Has_Tooltip
Get_Has_Window
Get_Hexpand_Set
Get_Margin_Bottom
Get_Margin_Left
Get_Margin_Right
Get_Margin_Top
Get_Modifier_Mask
Get_No_Show_All
Get_Pango_Context
Get_Parent_Window
Get_Preferred_Height
Get_Preferred_Height_For_Width
Get_Preferred_Size
Get_Preferred_Width
Get_Preferred_Width_For_Height
Get_Realized
Get_Receives_Default
Get_Request_Mode
Get_Requisition
Get_Root_Window
Get_Sensitive
Get_Size_Request
Get_State_Flags
Get_Support_Multidevice
Get_Tooltip_Markup
Get_Tooltip_Text
Get_Tooltip_Window
Get_Toplevel
Get_Vexpand_Set
Glib.Object.Deallocate (Inherited)
Glib.Object.Get_Type (Inherited)
Glib.Object.Notify (Inherited)
Glib.Object.Ref (Inherited)
Glib.Object.Ref_Sink (Inherited)
Glib.Object.Unref (Inherited)
Grab_Default
Has_Rc_Style
Has_Visible_Focus
Hide_On_Delete
In_Destruction
Input_Shape_Combine_Region
Is_Composited
Is_Sensitive
Keynav_Failed
List_Mnemonic_Labels
Mnemonic_Activate
Modify_Cursor
On_Accel_Closures_Changed
On_Accel_Closures_Changed
On_Button_Press_Event
On_Button_Press_Event
On_Button_Release_Event
On_Button_Release_Event
On_Can_Activate_Accel
On_Can_Activate_Accel
On_Child_Notify
On_Child_Notify
On_Composited_Changed
On_Composited_Changed
On_Configure_Event
On_Configure_Event
On_Damage_Event
On_Damage_Event
On_Delete_Event
On_Delete_Event
On_Destroy_Event
On_Destroy_Event
On_Direction_Changed
On_Direction_Changed
On_Drag_Begin
On_Drag_Begin
On_Drag_Data_Delete
On_Drag_Data_Delete
On_Drag_Data_Get
On_Drag_Data_Get
On_Drag_Data_Received
On_Drag_Data_Received
On_Drag_Drop
On_Drag_Drop
On_Drag_Failed
On_Drag_Failed
On_Drag_Leave
On_Drag_Leave
On_Drag_Motion
On_Drag_Motion
On_Enter_Notify_Event
On_Enter_Notify_Event
On_Event_After
On_Event_After
On_Focus_In_Event
On_Focus_In_Event
On_Focus_Out_Event
On_Focus_Out_Event
On_Grab_Broken_Event
On_Grab_Broken_Event
On_Grab_Focus
On_Grab_Focus
On_Grab_Notify
On_Grab_Notify
On_Hierarchy_Changed
On_Hierarchy_Changed
On_Key_Press_Event
On_Key_Press_Event
On_Key_Release_Event
On_Key_Release_Event
On_Keynav_Failed
On_Keynav_Failed
On_Leave_Notify_Event
On_Leave_Notify_Event
On_Map_Event
On_Map_Event
On_Mnemonic_Activate
On_Mnemonic_Activate
On_Motion_Notify_Event
On_Motion_Notify_Event
On_Move_Focus
On_Move_Focus
On_Parent_Set
On_Parent_Set
On_Popup_Menu
On_Popup_Menu
On_Property_Notify_Event
On_Property_Notify_Event
On_Proximity_In_Event
On_Proximity_In_Event
On_Proximity_Out_Event
On_Proximity_Out_Event
On_Query_Tooltip
On_Query_Tooltip
On_Screen_Changed
On_Screen_Changed
On_Scroll_Event
On_Scroll_Event
On_Selection_Clear_Event
On_Selection_Clear_Event
On_Selection_Get
On_Selection_Get
On_Selection_Notify_Event
On_Selection_Notify_Event
On_Selection_Received
On_Selection_Received
On_Selection_Request_Event
On_Selection_Request_Event
On_Show_Help
On_Show_Help
On_Size_Allocate
On_Size_Allocate
On_State_Changed
On_State_Changed
On_State_Flags_Changed
On_State_Flags_Changed
On_Style_Set
On_Style_Set
On_Style_Updated
On_Style_Updated
On_Touch_Event
On_Touch_Event
On_Unmap_Event
On_Unmap_Event
On_Unrealize
On_Unrealize
On_Visibility_Notify_Event
On_Visibility_Notify_Event
On_Window_State_Event
On_Window_State_Event
Override_Background_Color
Override_Color
Override_Cursor
Override_Font
Override_Symbolic_Color
Queue_Compute_Expand
Queue_Draw_Area
Queue_Draw_Region
Queue_Resize
Queue_Resize_No_Redraw
Region_Intersect
Register_Window
Remove_Accelerator
Remove_Mnemonic_Label
Remove_Tick_Callback
Render_Icon_Pixbuf
Reset_Rc_Styles
Send_Focus_Change
Set_Accel_Path
Set_Allocation
Set_App_Paintable
Set_Can_Default
Set_Can_Focus
Set_Child_Visible
Set_Composite_Name
Set_Device_Enabled
Set_Device_Events
Set_Direction
Set_Double_Buffered
Set_Has_Tooltip
Set_Has_Window
Set_Hexpand_Set
Set_Margin_Bottom
Set_Margin_Left
Set_Margin_Right
Set_Margin_Top
Set_No_Show_All
Set_Parent_Window
Set_Realized
Set_Receives_Default
Set_Redraw_On_Allocate
Set_Sensitive
Set_Size_Request
Set_State_Flags
Set_Support_Multidevice
Set_Tooltip_Markup
Set_Tooltip_Text
Set_Tooltip_Window
Set_Vexpand_Set
Shape_Combine_Region
Size_Allocate
Size_Request
Style_Attach
Style_Get_Property
Thaw_Child_Notify
Translate_Coordinates
Trigger_Tooltip_Query
Unregister_Window
Unset_State_Flags

Types

Gtk_Widget

type Gtk_Widget is access all Gtk_Widget_Record'Class;

Gtk_Align

type Gtk_Align is (
      Align_Fill,
      Align_Start,
      Align_End,
      Align_Center);

Gtk_Widget_Help_Type

type Gtk_Widget_Help_Type is (
      Widget_Help_Tooltip,
      Widget_Help_Whats_This);

Gtk_Requisition

type Gtk_Requisition is record
      Width : Gint;
      Height : Gint;
   end record;

Gtk_Widget_Path

type Gtk_Widget_Path is new Glib.C_Proxy;

Gtk_Allocation

subtype Gtk_Allocation is Gdk.Rectangle.Gdk_Rectangle;

Gtk_Tick_Callback

type Gtk_Tick_Callback is access function
     (Widget      : not null access Gtk_Widget_Record'Class;
      Frame_Clock : not null access Gdk.Frame_Clock.Gdk_Frame_Clock_Record'Class)
   return Boolean;
Callback type for adding a function to update animations. See Gtk.Widget.Add_Tick_Callback. Since: gtk+ 3.8 "widget": the widget "frame_clock": the frame clock for the widget (same as calling gtk_widget_get_frame_clock)

Property_Gtk_Align

type Property_Gtk_Align is new Gtk_Align_Properties.Property;

Property_Gtk_Widget_Help_Type

type Property_Gtk_Widget_Help_Type is new Gtk_Widget_Help_Type_Properties.Property;

Gtk_Requisition_Access

type Gtk_Requisition_Access is access all Gtk_Requisition;

Gtk_Allocation_Access

type Gtk_Allocation_Access is access all Gtk_Allocation;

Size_Allocate_Handler

type Size_Allocate_Handler is access procedure
     (Widget : System.Address; Allocation : Gtk_Allocation);

Preferred_Size_Handler

type Preferred_Size_Handler is access procedure
     (Widget       : System.Address;
      Minimum_Size : out Glib.Gint;
      Natural_Size : out Glib.Gint);

Draw_Handler

type Draw_Handler is access function
     (W  : System.Address;
      Cr : Cairo.Cairo_Context) return Gboolean;

Cb_Gtk_Widget_Void

type Cb_Gtk_Widget_Void is not null access procedure (Self : access Gtk_Widget_Record'Class);

Cb_GObject_Void

type Cb_GObject_Void is not null access procedure
     (Self : access Glib.Object.GObject_Record'Class);

Cb_Gtk_Widget_Gdk_Event_Button_Boolean

type Cb_Gtk_Widget_Gdk_Event_Button_Boolean is not null access function
     (Self  : access Gtk_Widget_Record'Class;
      Event : Gdk.Event.Gdk_Event_Button) return Boolean;

Cb_GObject_Gdk_Event_Button_Boolean

type Cb_GObject_Gdk_Event_Button_Boolean is not null access function
     (Self  : access Glib.Object.GObject_Record'Class;
      Event : Gdk.Event.Gdk_Event_Button) return Boolean;

Cb_Gtk_Widget_Guint_Boolean

type Cb_Gtk_Widget_Guint_Boolean is not null access function
     (Self      : access Gtk_Widget_Record'Class;
      Signal_Id : Guint) return Boolean;

Cb_GObject_Guint_Boolean

type Cb_GObject_Guint_Boolean is not null access function
     (Self      : access Glib.Object.GObject_Record'Class;
      Signal_Id : Guint) return Boolean;

Cb_Gtk_Widget_Param_Spec_Void

type Cb_Gtk_Widget_Param_Spec_Void is not null access procedure
     (Self           : access Gtk_Widget_Record'Class;
      Child_Property : Glib.Param_Spec);

Cb_GObject_Param_Spec_Void

type Cb_GObject_Param_Spec_Void is not null access procedure
     (Self           : access Glib.Object.GObject_Record'Class;
      Child_Property : Glib.Param_Spec);

Cb_Gtk_Widget_Gdk_Event_Configure_Boolean

type Cb_Gtk_Widget_Gdk_Event_Configure_Boolean is not null access function
     (Self  : access Gtk_Widget_Record'Class;
      Event : Gdk.Event.Gdk_Event_Configure) return Boolean;

Cb_GObject_Gdk_Event_Configure_Boolean

type Cb_GObject_Gdk_Event_Configure_Boolean is not null access function
     (Self  : access Glib.Object.GObject_Record'Class;
      Event : Gdk.Event.Gdk_Event_Configure) return Boolean;

Cb_Gtk_Widget_Gdk_Event_Expose_Boolean

type Cb_Gtk_Widget_Gdk_Event_Expose_Boolean is not null access function
     (Self  : access Gtk_Widget_Record'Class;
      Event : Gdk.Event.Gdk_Event_Expose) return Boolean;

Cb_GObject_Gdk_Event_Expose_Boolean

type Cb_GObject_Gdk_Event_Expose_Boolean is not null access function
     (Self  : access Glib.Object.GObject_Record'Class;
      Event : Gdk.Event.Gdk_Event_Expose) return Boolean;

Cb_Gtk_Widget_Gdk_Event_Boolean

type Cb_Gtk_Widget_Gdk_Event_Boolean is not null access function
     (Self  : access Gtk_Widget_Record'Class;
      Event : Gdk.Event.Gdk_Event) return Boolean;

Cb_GObject_Gdk_Event_Boolean

type Cb_GObject_Gdk_Event_Boolean is not null access function
     (Self  : access Glib.Object.GObject_Record'Class;
      Event : Gdk.Event.Gdk_Event) return Boolean;

Cb_Gtk_Widget_Gtk_Text_Direction_Void

type Cb_Gtk_Widget_Gtk_Text_Direction_Void is not null access procedure
     (Self               : access Gtk_Widget_Record'Class;
      Previous_Direction : Gtk.Enums.Gtk_Text_Direction);

Cb_GObject_Gtk_Text_Direction_Void

type Cb_GObject_Gtk_Text_Direction_Void is not null access procedure
     (Self               : access Glib.Object.GObject_Record'Class;
      Previous_Direction : Gtk.Enums.Gtk_Text_Direction);

Cb_Gtk_Widget_Drag_Context_Void

type Cb_Gtk_Widget_Drag_Context_Void is not null access procedure
     (Self    : access Gtk_Widget_Record'Class;
      Context : not null access Gdk.Drag_Contexts.Drag_Context_Record'Class);

Cb_GObject_Drag_Context_Void

type Cb_GObject_Drag_Context_Void is not null access procedure
     (Self    : access Glib.Object.GObject_Record'Class;
      Context : not null access Gdk.Drag_Contexts.Drag_Context_Record'Class);

Cb_Gtk_Widget_Drag_Context_Gtk_Selection_Data_Guint_Guint_Void

type Cb_Gtk_Widget_Drag_Context_Gtk_Selection_Data_Guint_Guint_Void is not null access procedure
     (Self    : access Gtk_Widget_Record'Class;
      Context : not null access Gdk.Drag_Contexts.Drag_Context_Record'Class;
      Data    : Gtk.Selection_Data.Gtk_Selection_Data;
      Info    : Guint;
      Time    : Guint);

Cb_GObject_Drag_Context_Gtk_Selection_Data_Guint_Guint_Void

type Cb_GObject_Drag_Context_Gtk_Selection_Data_Guint_Guint_Void is not null access procedure
     (Self    : access Glib.Object.GObject_Record'Class;
      Context : not null access Gdk.Drag_Contexts.Drag_Context_Record'Class;
      Data    : Gtk.Selection_Data.Gtk_Selection_Data;
      Info    : Guint;
      Time    : Guint);

Cb_Gtk_Widget_Drag_Context_Gint_Gint_Gtk_Selection_Data_Guint_Guint_Void

type Cb_Gtk_Widget_Drag_Context_Gint_Gint_Gtk_Selection_Data_Guint_Guint_Void is not null access procedure
     (Self    : access Gtk_Widget_Record'Class;
      Context : not null access Gdk.Drag_Contexts.Drag_Context_Record'Class;
      X       : Gint;
      Y       : Gint;
      Data    : Gtk.Selection_Data.Gtk_Selection_Data;
      Info    : Guint;
      Time    : Guint);

Cb_GObject_Drag_Context_Gint_Gint_Gtk_Selection_Data_Guint_Guint_Void

type Cb_GObject_Drag_Context_Gint_Gint_Gtk_Selection_Data_Guint_Guint_Void is not null access procedure
     (Self    : access Glib.Object.GObject_Record'Class;
      Context : not null access Gdk.Drag_Contexts.Drag_Context_Record'Class;
      X       : Gint;
      Y       : Gint;
      Data    : Gtk.Selection_Data.Gtk_Selection_Data;
      Info    : Guint;
      Time    : Guint);

Cb_Gtk_Widget_Drag_Context_Gint_Gint_Guint_Boolean

type Cb_Gtk_Widget_Drag_Context_Gint_Gint_Guint_Boolean is not null access function
     (Self    : access Gtk_Widget_Record'Class;
      Context : not null access Gdk.Drag_Contexts.Drag_Context_Record'Class;
      X       : Gint;
      Y       : Gint;
      Time    : Guint) return Boolean;

Cb_GObject_Drag_Context_Gint_Gint_Guint_Boolean

type Cb_GObject_Drag_Context_Gint_Gint_Guint_Boolean is not null access function
     (Self    : access Glib.Object.GObject_Record'Class;
      Context : not null access Gdk.Drag_Contexts.Drag_Context_Record'Class;
      X       : Gint;
      Y       : Gint;
      Time    : Guint) return Boolean;

Cb_Gtk_Widget_Drag_Context_Gtk_Drag_Result_Boolean

type Cb_Gtk_Widget_Drag_Context_Gtk_Drag_Result_Boolean is not null access function
     (Self    : access Gtk_Widget_Record'Class;
      Context : not null access Gdk.Drag_Contexts.Drag_Context_Record'Class;
      Result  : Gtk.Enums.Gtk_Drag_Result) return Boolean;

Cb_GObject_Drag_Context_Gtk_Drag_Result_Boolean

type Cb_GObject_Drag_Context_Gtk_Drag_Result_Boolean is not null access function
     (Self    : access Glib.Object.GObject_Record'Class;
      Context : not null access Gdk.Drag_Contexts.Drag_Context_Record'Class;
      Result  : Gtk.Enums.Gtk_Drag_Result) return Boolean;

Cb_Gtk_Widget_Drag_Context_Guint_Void

type Cb_Gtk_Widget_Drag_Context_Guint_Void is not null access procedure
     (Self    : access Gtk_Widget_Record'Class;
      Context : not null access Gdk.Drag_Contexts.Drag_Context_Record'Class;
      Time    : Guint);

Cb_GObject_Drag_Context_Guint_Void

type Cb_GObject_Drag_Context_Guint_Void is not null access procedure
     (Self    : access Glib.Object.GObject_Record'Class;
      Context : not null access Gdk.Drag_Contexts.Drag_Context_Record'Class;
      Time    : Guint);

Cb_Gtk_Widget_Cairo_Context_Boolean

type Cb_Gtk_Widget_Cairo_Context_Boolean is not null access function
     (Self : access Gtk_Widget_Record'Class;
      Cr   : Cairo.Cairo_Context) return Boolean;

Cb_GObject_Cairo_Context_Boolean

type Cb_GObject_Cairo_Context_Boolean is not null access function
     (Self : access Glib.Object.GObject_Record'Class;
      Cr   : Cairo.Cairo_Context) return Boolean;

Cb_Gtk_Widget_Gdk_Event_Crossing_Boolean

type Cb_Gtk_Widget_Gdk_Event_Crossing_Boolean is not null access function
     (Self  : access Gtk_Widget_Record'Class;
      Event : Gdk.Event.Gdk_Event_Crossing) return Boolean;

Cb_GObject_Gdk_Event_Crossing_Boolean

type Cb_GObject_Gdk_Event_Crossing_Boolean is not null access function
     (Self  : access Glib.Object.GObject_Record'Class;
      Event : Gdk.Event.Gdk_Event_Crossing) return Boolean;

Cb_Gtk_Widget_Gdk_Event_Void

type Cb_Gtk_Widget_Gdk_Event_Void is not null access procedure
     (Self  : access Gtk_Widget_Record'Class;
      Event : Gdk.Event.Gdk_Event);

Cb_GObject_Gdk_Event_Void

type Cb_GObject_Gdk_Event_Void is not null access procedure
     (Self  : access Glib.Object.GObject_Record'Class;
      Event : Gdk.Event.Gdk_Event);

Cb_Gtk_Widget_Gtk_Direction_Type_Boolean

type Cb_Gtk_Widget_Gtk_Direction_Type_Boolean is not null access function
     (Self      : access Gtk_Widget_Record'Class;
      Direction : Gtk.Enums.Gtk_Direction_Type) return Boolean;

Cb_GObject_Gtk_Direction_Type_Boolean

type Cb_GObject_Gtk_Direction_Type_Boolean is not null access function
     (Self      : access Glib.Object.GObject_Record'Class;
      Direction : Gtk.Enums.Gtk_Direction_Type) return Boolean;

Cb_Gtk_Widget_Gdk_Event_Focus_Boolean

type Cb_Gtk_Widget_Gdk_Event_Focus_Boolean is not null access function
     (Self  : access Gtk_Widget_Record'Class;
      Event : Gdk.Event.Gdk_Event_Focus) return Boolean;

Cb_GObject_Gdk_Event_Focus_Boolean

type Cb_GObject_Gdk_Event_Focus_Boolean is not null access function
     (Self  : access Glib.Object.GObject_Record'Class;
      Event : Gdk.Event.Gdk_Event_Focus) return Boolean;

Cb_Gtk_Widget_Gdk_Event_Grab_Broken_Boolean

type Cb_Gtk_Widget_Gdk_Event_Grab_Broken_Boolean is not null access function
     (Self  : access Gtk_Widget_Record'Class;
      Event : Gdk.Event.Gdk_Event_Grab_Broken) return Boolean;

Cb_GObject_Gdk_Event_Grab_Broken_Boolean

type Cb_GObject_Gdk_Event_Grab_Broken_Boolean is not null access function
     (Self  : access Glib.Object.GObject_Record'Class;
      Event : Gdk.Event.Gdk_Event_Grab_Broken) return Boolean;

Cb_Gtk_Widget_Boolean_Void

type Cb_Gtk_Widget_Boolean_Void is not null access procedure
     (Self        : access Gtk_Widget_Record'Class;
      Was_Grabbed : Boolean);

Cb_GObject_Boolean_Void

type Cb_GObject_Boolean_Void is not null access procedure
     (Self        : access Glib.Object.GObject_Record'Class;
      Was_Grabbed : Boolean);

Cb_Gtk_Widget_Gtk_Widget_Void

type Cb_Gtk_Widget_Gtk_Widget_Void is not null access procedure
     (Self              : access Gtk_Widget_Record'Class;
      Previous_Toplevel : access Gtk_Widget_Record'Class);

Cb_GObject_Gtk_Widget_Void

type Cb_GObject_Gtk_Widget_Void is not null access procedure
     (Self              : access Glib.Object.GObject_Record'Class;
      Previous_Toplevel : access Gtk_Widget_Record'Class);

Cb_Gtk_Widget_Gdk_Event_Key_Boolean

type Cb_Gtk_Widget_Gdk_Event_Key_Boolean is not null access function
     (Self  : access Gtk_Widget_Record'Class;
      Event : Gdk.Event.Gdk_Event_Key) return Boolean;

Cb_GObject_Gdk_Event_Key_Boolean

type Cb_GObject_Gdk_Event_Key_Boolean is not null access function
     (Self  : access Glib.Object.GObject_Record'Class;
      Event : Gdk.Event.Gdk_Event_Key) return Boolean;

Cb_Gtk_Widget_Gdk_Event_Any_Boolean

type Cb_Gtk_Widget_Gdk_Event_Any_Boolean is not null access function
     (Self  : access Gtk_Widget_Record'Class;
      Event : Gdk.Event.Gdk_Event_Any) return Boolean;

Cb_GObject_Gdk_Event_Any_Boolean

type Cb_GObject_Gdk_Event_Any_Boolean is not null access function
     (Self  : access Glib.Object.GObject_Record'Class;
      Event : Gdk.Event.Gdk_Event_Any) return Boolean;

Cb_Gtk_Widget_Boolean_Boolean

type Cb_Gtk_Widget_Boolean_Boolean is not null access function
     (Self : access Gtk_Widget_Record'Class;
      Arg1 : Boolean) return Boolean;

Cb_GObject_Boolean_Boolean

type Cb_GObject_Boolean_Boolean is not null access function
     (Self : access Glib.Object.GObject_Record'Class;
      Arg1 : Boolean) return Boolean;

Cb_Gtk_Widget_Gdk_Event_Motion_Boolean

type Cb_Gtk_Widget_Gdk_Event_Motion_Boolean is not null access function
     (Self  : access Gtk_Widget_Record'Class;
      Event : Gdk.Event.Gdk_Event_Motion) return Boolean;

Cb_GObject_Gdk_Event_Motion_Boolean

type Cb_GObject_Gdk_Event_Motion_Boolean is not null access function
     (Self  : access Glib.Object.GObject_Record'Class;
      Event : Gdk.Event.Gdk_Event_Motion) return Boolean;

Cb_Gtk_Widget_Gtk_Direction_Type_Void

type Cb_Gtk_Widget_Gtk_Direction_Type_Void is not null access procedure
     (Self      : access Gtk_Widget_Record'Class;
      Direction : Gtk.Enums.Gtk_Direction_Type);

Cb_GObject_Gtk_Direction_Type_Void

type Cb_GObject_Gtk_Direction_Type_Void is not null access procedure
     (Self      : access Glib.Object.GObject_Record'Class;
      Direction : Gtk.Enums.Gtk_Direction_Type);

Cb_Gtk_Widget_Boolean

type Cb_Gtk_Widget_Boolean is not null access function
     (Self : access Gtk_Widget_Record'Class) return Boolean;

Cb_GObject_Boolean

type Cb_GObject_Boolean is not null access function
     (Self : access Glib.Object.GObject_Record'Class)
   return Boolean;

Cb_Gtk_Widget_Gdk_Event_Property_Boolean

type Cb_Gtk_Widget_Gdk_Event_Property_Boolean is not null access function
     (Self  : access Gtk_Widget_Record'Class;
      Event : Gdk.Event.Gdk_Event_Property) return Boolean;

Cb_GObject_Gdk_Event_Property_Boolean

type Cb_GObject_Gdk_Event_Property_Boolean is not null access function
     (Self  : access Glib.Object.GObject_Record'Class;
      Event : Gdk.Event.Gdk_Event_Property) return Boolean;

Cb_Gtk_Widget_Gdk_Event_Proximity_Boolean

type Cb_Gtk_Widget_Gdk_Event_Proximity_Boolean is not null access function
     (Self  : access Gtk_Widget_Record'Class;
      Event : Gdk.Event.Gdk_Event_Proximity) return Boolean;

Cb_GObject_Gdk_Event_Proximity_Boolean

type Cb_GObject_Gdk_Event_Proximity_Boolean is not null access function
     (Self  : access Glib.Object.GObject_Record'Class;
      Event : Gdk.Event.Gdk_Event_Proximity) return Boolean;

Cb_Gtk_Widget_Gint_Gint_Boolean_GObject_Boolean

type Cb_Gtk_Widget_Gint_Gint_Boolean_GObject_Boolean is not null access function
     (Self          : access Gtk_Widget_Record'Class;
      X             : Gint;
      Y             : Gint;
      Keyboard_Mode : Boolean;
      Tooltip       : not null access Glib.Object.GObject_Record'Class)
   return Boolean;

Cb_GObject_Gint_Gint_Boolean_GObject_Boolean

type Cb_GObject_Gint_Gint_Boolean_GObject_Boolean is not null access function
     (Self          : access Glib.Object.GObject_Record'Class;
      X             : Gint;
      Y             : Gint;
      Keyboard_Mode : Boolean;
      Tooltip       : not null access Glib.Object.GObject_Record'Class)
   return Boolean;

Cb_Gtk_Widget_Gdk_Screen_Void

type Cb_Gtk_Widget_Gdk_Screen_Void is not null access procedure
     (Self            : access Gtk_Widget_Record'Class;
      Previous_Screen : access Gdk.Screen.Gdk_Screen_Record'Class);

Cb_GObject_Gdk_Screen_Void

type Cb_GObject_Gdk_Screen_Void is not null access procedure
     (Self            : access Glib.Object.GObject_Record'Class;
      Previous_Screen : access Gdk.Screen.Gdk_Screen_Record'Class);

Cb_Gtk_Widget_Gdk_Event_Scroll_Boolean

type Cb_Gtk_Widget_Gdk_Event_Scroll_Boolean is not null access function
     (Self  : access Gtk_Widget_Record'Class;
      Event : Gdk.Event.Gdk_Event_Scroll) return Boolean;

Cb_GObject_Gdk_Event_Scroll_Boolean

type Cb_GObject_Gdk_Event_Scroll_Boolean is not null access function
     (Self  : access Glib.Object.GObject_Record'Class;
      Event : Gdk.Event.Gdk_Event_Scroll) return Boolean;

Cb_Gtk_Widget_Gdk_Event_Selection_Boolean

type Cb_Gtk_Widget_Gdk_Event_Selection_Boolean is not null access function
     (Self  : access Gtk_Widget_Record'Class;
      Event : Gdk.Event.Gdk_Event_Selection) return Boolean;

Cb_GObject_Gdk_Event_Selection_Boolean

type Cb_GObject_Gdk_Event_Selection_Boolean is not null access function
     (Self  : access Glib.Object.GObject_Record'Class;
      Event : Gdk.Event.Gdk_Event_Selection) return Boolean;

Cb_Gtk_Widget_Gtk_Selection_Data_Guint_Guint_Void

type Cb_Gtk_Widget_Gtk_Selection_Data_Guint_Guint_Void is not null access procedure
     (Self : access Gtk_Widget_Record'Class;
      Data : Gtk.Selection_Data.Gtk_Selection_Data;
      Info : Guint;
      Time : Guint);

Cb_GObject_Gtk_Selection_Data_Guint_Guint_Void

type Cb_GObject_Gtk_Selection_Data_Guint_Guint_Void is not null access procedure
     (Self : access Glib.Object.GObject_Record'Class;
      Data : Gtk.Selection_Data.Gtk_Selection_Data;
      Info : Guint;
      Time : Guint);

Cb_Gtk_Widget_Gtk_Selection_Data_Guint_Void

type Cb_Gtk_Widget_Gtk_Selection_Data_Guint_Void is not null access procedure
     (Self : access Gtk_Widget_Record'Class;
      Data : Gtk.Selection_Data.Gtk_Selection_Data;
      Time : Guint);

Cb_GObject_Gtk_Selection_Data_Guint_Void

type Cb_GObject_Gtk_Selection_Data_Guint_Void is not null access procedure
     (Self : access Glib.Object.GObject_Record'Class;
      Data : Gtk.Selection_Data.Gtk_Selection_Data;
      Time : Guint);

Cb_Gtk_Widget_Gtk_Widget_Help_Type_Boolean

type Cb_Gtk_Widget_Gtk_Widget_Help_Type_Boolean is not null access function
     (Self      : access Gtk_Widget_Record'Class;
      Help_Type : Gtk_Widget_Help_Type) return Boolean;

Cb_GObject_Gtk_Widget_Help_Type_Boolean

type Cb_GObject_Gtk_Widget_Help_Type_Boolean is not null access function
     (Self      : access Glib.Object.GObject_Record'Class;
      Help_Type : Gtk_Widget_Help_Type) return Boolean;

Cb_Gtk_Widget_Cairo_Rectangle_Int_Void

type Cb_Gtk_Widget_Cairo_Rectangle_Int_Void is not null access procedure
     (Self       : access Gtk_Widget_Record'Class;
      Allocation : Cairo.Region.Cairo_Rectangle_Int);

Cb_GObject_Cairo_Rectangle_Int_Void

type Cb_GObject_Cairo_Rectangle_Int_Void is not null access procedure
     (Self       : access Glib.Object.GObject_Record'Class;
      Allocation : Cairo.Region.Cairo_Rectangle_Int);

Cb_Gtk_Widget_Gtk_State_Type_Void

type Cb_Gtk_Widget_Gtk_State_Type_Void is not null access procedure
     (Self  : access Gtk_Widget_Record'Class;
      State : Gtk.Enums.Gtk_State_Type);

Cb_GObject_Gtk_State_Type_Void

type Cb_GObject_Gtk_State_Type_Void is not null access procedure
     (Self  : access Glib.Object.GObject_Record'Class;
      State : Gtk.Enums.Gtk_State_Type);

Cb_Gtk_Widget_Gtk_State_Flags_Void

type Cb_Gtk_Widget_Gtk_State_Flags_Void is not null access procedure
     (Self  : access Gtk_Widget_Record'Class;
      Flags : Gtk.Enums.Gtk_State_Flags);

Cb_GObject_Gtk_State_Flags_Void

type Cb_GObject_Gtk_State_Flags_Void is not null access procedure
     (Self  : access Glib.Object.GObject_Record'Class;
      Flags : Gtk.Enums.Gtk_State_Flags);

Cb_Gtk_Widget_Gtk_Style_Void

type Cb_Gtk_Widget_Gtk_Style_Void is not null access procedure
     (Self           : access Gtk_Widget_Record'Class;
      Previous_Style : access Gtk.Style.Gtk_Style_Record'Class);

Cb_GObject_Gtk_Style_Void

type Cb_GObject_Gtk_Style_Void is not null access procedure
     (Self           : access Glib.Object.GObject_Record'Class;
      Previous_Style : access Gtk.Style.Gtk_Style_Record'Class);

Cb_Gtk_Widget_Gdk_Event_Visibility_Boolean

type Cb_Gtk_Widget_Gdk_Event_Visibility_Boolean is not null access function
     (Self  : access Gtk_Widget_Record'Class;
      Event : Gdk.Event.Gdk_Event_Visibility) return Boolean;

Cb_GObject_Gdk_Event_Visibility_Boolean

type Cb_GObject_Gdk_Event_Visibility_Boolean is not null access function
     (Self  : access Glib.Object.GObject_Record'Class;
      Event : Gdk.Event.Gdk_Event_Visibility) return Boolean;

Cb_Gtk_Widget_Gdk_Event_Window_State_Boolean

type Cb_Gtk_Widget_Gdk_Event_Window_State_Boolean is not null access function
     (Self  : access Gtk_Widget_Record'Class;
      Event : Gdk.Event.Gdk_Event_Window_State) return Boolean;

Cb_GObject_Gdk_Event_Window_State_Boolean

type Cb_GObject_Gdk_Event_Window_State_Boolean is not null access function
     (Self  : access Glib.Object.GObject_Record'Class;
      Event : Gdk.Event.Gdk_Event_Window_State) return Boolean;

Constants & Global variables

App_Paintable_Property (Glib.Properties.Property_Boolean)

App_Paintable_Property : constant Glib.Properties.Property_Boolean;

Can_Default_Property (Glib.Properties.Property_Boolean)

Can_Default_Property : constant Glib.Properties.Property_Boolean;

Composite_Child_Property (Glib.Properties.Property_Boolean)

Composite_Child_Property : constant Glib.Properties.Property_Boolean;

Double_Buffered_Property (Glib.Properties.Property_Boolean)

Double_Buffered_Property : constant Glib.Properties.Property_Boolean;
Whether the widget is double buffered.

Expand_Property (Glib.Properties.Property_Boolean)

Expand_Property : constant Glib.Properties.Property_Boolean;
Whether to expand in both directions. Setting this sets both Gtk.Widget.Gtk_Widget:hexpand and Gtk.Widget.Gtk_Widget:vexpand

Halign_Property (Property_Gtk_Align)

Halign_Property : constant Gtk.Widget.Property_Gtk_Align;
Type: Gtk_Align How to distribute horizontal space if widget gets extra space, see Gtk.Widget.Gtk_Align

Has_Default_Property (Glib.Properties.Property_Boolean)

Has_Default_Property : constant Glib.Properties.Property_Boolean;

Has_Tooltip_Property (Glib.Properties.Property_Boolean)

Has_Tooltip_Property : constant Glib.Properties.Property_Boolean;
Enables or disables the emission of Gtk.Widget.Gtk_Widget::query-tooltip on Widget. A value of True indicates that Widget can have a tooltip, in this case the widget will be queried using Gtk.Widget.Gtk_Widget::query-tooltip to determine whether it will provide a tooltip or not. Note that setting this property to True for the first time will change the event masks of the GdkWindows of this widget to include leave-notify and motion-notify events. This cannot and will not be undone when the property is set to False again.

Height_Request_Property (Glib.Properties.Property_Int)

Height_Request_Property : constant Glib.Properties.Property_Int;

Hexpand_Property (Glib.Properties.Property_Boolean)

Hexpand_Property : constant Glib.Properties.Property_Boolean;
Whether to expand horizontally. See Gtk.Widget.Set_Hexpand.

Hexpand_Set_Property (Glib.Properties.Property_Boolean)

Hexpand_Set_Property : constant Glib.Properties.Property_Boolean;
Whether to use the Gtk.Widget.Gtk_Widget:hexpand property. See Gtk.Widget.Get_Hexpand_Set.

Margin_Property (Glib.Properties.Property_Int)

Margin_Property : constant Glib.Properties.Property_Int;
Sets all four sides' margin at once. If read, returns max margin on any side.

Margin_Bottom_Property (Glib.Properties.Property_Int)

Margin_Bottom_Property : constant Glib.Properties.Property_Int;
Margin on bottom side of widget. This property adds margin outside of the widget's normal size request, the margin will be added in addition to the size from Gtk.Widget.Set_Size_Request for example.

Margin_Left_Property (Glib.Properties.Property_Int)

Margin_Left_Property : constant Glib.Properties.Property_Int;
Margin on left side of widget. This property adds margin outside of the widget's normal size request, the margin will be added in addition to the size from Gtk.Widget.Set_Size_Request for example.

Margin_Right_Property (Glib.Properties.Property_Int)

Margin_Right_Property : constant Glib.Properties.Property_Int;
Margin on right side of widget. This property adds margin outside of the widget's normal size request, the margin will be added in addition to the size from Gtk.Widget.Set_Size_Request for example.

Margin_Top_Property (Glib.Properties.Property_Int)

Margin_Top_Property : constant Glib.Properties.Property_Int;
Margin on top side of widget. This property adds margin outside of the widget's normal size request, the margin will be added in addition to the size from Gtk.Widget.Set_Size_Request for example.

No_Show_All_Property (Glib.Properties.Property_Boolean)

No_Show_All_Property : constant Glib.Properties.Property_Boolean;

Opacity_Property (Glib.Properties.Property_Double)

Opacity_Property : constant Glib.Properties.Property_Double;
Type: Gdouble The requested opacity of the widget. See Gtk.Widget.Set_Opacity for more details about window opacity. Before 3.8 this was only availible in GtkWindow

Receives_Default_Property (Glib.Properties.Property_Boolean)

Receives_Default_Property : constant Glib.Properties.Property_Boolean;

Tooltip_Markup_Property (Glib.Properties.Property_String)

Tooltip_Markup_Property : constant Glib.Properties.Property_String;
Sets the text of tooltip to be the given string, which is marked up with the <link linkend="PangoMarkupFormat">Pango text markup language</link>. Also see Gtk.Tooltip.Set_Markup. This is a convenience property which will take care of getting the tooltip shown if the given string is not null: Gtk.Widget.Gtk_Widget:has-tooltip will automatically be set to True and there will be taken care of Gtk.Widget.Gtk_Widget::query-tooltip in the default signal handler.

Tooltip_Text_Property (Glib.Properties.Property_String)

Tooltip_Text_Property : constant Glib.Properties.Property_String;
Sets the text of tooltip to be the given string. Also see Gtk.Tooltip.Set_Text. This is a convenience property which will take care of getting the tooltip shown if the given string is not null: Gtk.Widget.Gtk_Widget:has-tooltip will automatically be set to True and there will be taken care of Gtk.Widget.Gtk_Widget::query-tooltip in the default signal handler.

Valign_Property (Property_Gtk_Align)

Valign_Property : constant Gtk.Widget.Property_Gtk_Align;
Type: Gtk_Align How to distribute vertical space if widget gets extra space, see Gtk.Widget.Gtk_Align

Vexpand_Property (Glib.Properties.Property_Boolean)

Vexpand_Property : constant Glib.Properties.Property_Boolean;
Whether to expand vertically. See Gtk.Widget.Set_Vexpand.

Vexpand_Set_Property (Glib.Properties.Property_Boolean)

Vexpand_Set_Property : constant Glib.Properties.Property_Boolean;
Whether to use the Gtk.Widget.Gtk_Widget:vexpand property. See Gtk.Widget.Get_Vexpand_Set.

Width_Request_Property (Glib.Properties.Property_Int)

Width_Request_Property : constant Glib.Properties.Property_Int;

Window_Property (Glib.Properties.Property_Boxed)

Window_Property : constant Glib.Properties.Property_Boxed;
Type: Gdk.Window The widget's window if it is realized, null otherwise.

Signal_Accel_Closures_Changed (Glib.Signal_Name)

Signal_Accel_Closures_Changed : constant Glib.Signal_Name := "accel-closures-changed";

Signal_Button_Press_Event (Glib.Signal_Name)

Signal_Button_Press_Event : constant Glib.Signal_Name := "button-press-event";

Signal_Button_Release_Event (Glib.Signal_Name)

Signal_Button_Release_Event : constant Glib.Signal_Name := "button-release-event";

Signal_Can_Activate_Accel (Glib.Signal_Name)

Signal_Can_Activate_Accel : constant Glib.Signal_Name := "can-activate-accel";

Signal_Child_Notify (Glib.Signal_Name)

Signal_Child_Notify : constant Glib.Signal_Name := "child-notify";

Signal_Composited_Changed (Glib.Signal_Name)

Signal_Composited_Changed : constant Glib.Signal_Name := "composited-changed";

Signal_Configure_Event (Glib.Signal_Name)

Signal_Configure_Event : constant Glib.Signal_Name := "configure-event";

Signal_Damage_Event (Glib.Signal_Name)

Signal_Damage_Event : constant Glib.Signal_Name := "damage-event";

Signal_Delete_Event (Glib.Signal_Name)

Signal_Delete_Event : constant Glib.Signal_Name := "delete-event";

Signal_Destroy (Glib.Signal_Name)

Signal_Destroy : constant Glib.Signal_Name := "destroy";

Signal_Destroy_Event (Glib.Signal_Name)

Signal_Destroy_Event : constant Glib.Signal_Name := "destroy-event";

Signal_Direction_Changed (Glib.Signal_Name)

Signal_Direction_Changed : constant Glib.Signal_Name := "direction-changed";

Signal_Drag_Begin (Glib.Signal_Name)

Signal_Drag_Begin : constant Glib.Signal_Name := "drag-begin";

Signal_Drag_Data_Delete (Glib.Signal_Name)

Signal_Drag_Data_Delete : constant Glib.Signal_Name := "drag-data-delete";

Signal_Drag_Data_Get (Glib.Signal_Name)

Signal_Drag_Data_Get : constant Glib.Signal_Name := "drag-data-get";

Signal_Drag_Data_Received (Glib.Signal_Name)

Signal_Drag_Data_Received : constant Glib.Signal_Name := "drag-data-received";

Signal_Drag_Drop (Glib.Signal_Name)

Signal_Drag_Drop : constant Glib.Signal_Name := "drag-drop";

Signal_Drag_End (Glib.Signal_Name)

Signal_Drag_End : constant Glib.Signal_Name := "drag-end";

Signal_Drag_Failed (Glib.Signal_Name)

Signal_Drag_Failed : constant Glib.Signal_Name := "drag-failed";

Signal_Drag_Leave (Glib.Signal_Name)

Signal_Drag_Leave : constant Glib.Signal_Name := "drag-leave";

Signal_Drag_Motion (Glib.Signal_Name)

Signal_Drag_Motion : constant Glib.Signal_Name := "drag-motion";

Signal_Draw (Glib.Signal_Name)

Signal_Draw : constant Glib.Signal_Name := "draw";

Signal_Enter_Notify_Event (Glib.Signal_Name)

Signal_Enter_Notify_Event : constant Glib.Signal_Name := "enter-notify-event";

Signal_Event (Glib.Signal_Name)

Signal_Event : constant Glib.Signal_Name := "event";

Signal_Event_After (Glib.Signal_Name)

Signal_Event_After : constant Glib.Signal_Name := "event-after";

Signal_Focus (Glib.Signal_Name)

Signal_Focus : constant Glib.Signal_Name := "focus";

Signal_Focus_In_Event (Glib.Signal_Name)

Signal_Focus_In_Event : constant Glib.Signal_Name := "focus-in-event";

Signal_Focus_Out_Event (Glib.Signal_Name)

Signal_Focus_Out_Event : constant Glib.Signal_Name := "focus-out-event";

Signal_Grab_Broken_Event (Glib.Signal_Name)

Signal_Grab_Broken_Event : constant Glib.Signal_Name := "grab-broken-event";

Signal_Grab_Focus (Glib.Signal_Name)

Signal_Grab_Focus : constant Glib.Signal_Name := "grab-focus";

Signal_Grab_Notify (Glib.Signal_Name)

Signal_Grab_Notify : constant Glib.Signal_Name := "grab-notify";

Signal_Hide (Glib.Signal_Name)

Signal_Hide : constant Glib.Signal_Name := "hide";

Signal_Hierarchy_Changed (Glib.Signal_Name)

Signal_Hierarchy_Changed : constant Glib.Signal_Name := "hierarchy-changed";

Signal_Key_Press_Event (Glib.Signal_Name)

Signal_Key_Press_Event : constant Glib.Signal_Name := "key-press-event";

Signal_Key_Release_Event (Glib.Signal_Name)

Signal_Key_Release_Event : constant Glib.Signal_Name := "key-release-event";

Signal_Keynav_Failed (Glib.Signal_Name)

Signal_Keynav_Failed : constant Glib.Signal_Name := "keynav-failed";

Signal_Leave_Notify_Event (Glib.Signal_Name)

Signal_Leave_Notify_Event : constant Glib.Signal_Name := "leave-notify-event";

Signal_Map (Glib.Signal_Name)

Signal_Map : constant Glib.Signal_Name := "map";

Signal_Map_Event (Glib.Signal_Name)

Signal_Map_Event : constant Glib.Signal_Name := "map-event";

Signal_Mnemonic_Activate (Glib.Signal_Name)

Signal_Mnemonic_Activate : constant Glib.Signal_Name := "mnemonic-activate";

Signal_Motion_Notify_Event (Glib.Signal_Name)

Signal_Motion_Notify_Event : constant Glib.Signal_Name := "motion-notify-event";

Signal_Move_Focus (Glib.Signal_Name)

Signal_Move_Focus : constant Glib.Signal_Name := "move-focus";

Signal_Parent_Set (Glib.Signal_Name)

Signal_Parent_Set : constant Glib.Signal_Name := "parent-set";

Signal_Popup_Menu (Glib.Signal_Name)

Signal_Popup_Menu : constant Glib.Signal_Name := "popup-menu";

Signal_Property_Notify_Event (Glib.Signal_Name)

Signal_Property_Notify_Event : constant Glib.Signal_Name := "property-notify-event";

Signal_Proximity_In_Event (Glib.Signal_Name)

Signal_Proximity_In_Event : constant Glib.Signal_Name := "proximity-in-event";

Signal_Proximity_Out_Event (Glib.Signal_Name)

Signal_Proximity_Out_Event : constant Glib.Signal_Name := "proximity-out-event";

Signal_Query_Tooltip (Glib.Signal_Name)

Signal_Query_Tooltip : constant Glib.Signal_Name := "query-tooltip";

Signal_Realize (Glib.Signal_Name)

Signal_Realize : constant Glib.Signal_Name := "realize";

Signal_Screen_Changed (Glib.Signal_Name)

Signal_Screen_Changed : constant Glib.Signal_Name := "screen-changed";

Signal_Scroll_Event (Glib.Signal_Name)

Signal_Scroll_Event : constant Glib.Signal_Name := "scroll-event";

Signal_Selection_Clear_Event (Glib.Signal_Name)

Signal_Selection_Clear_Event : constant Glib.Signal_Name := "selection-clear-event";

Signal_Selection_Get (Glib.Signal_Name)

Signal_Selection_Get : constant Glib.Signal_Name := "selection-get";

Signal_Selection_Notify_Event (Glib.Signal_Name)

Signal_Selection_Notify_Event : constant Glib.Signal_Name := "selection-notify-event";

Signal_Selection_Received (Glib.Signal_Name)

Signal_Selection_Received : constant Glib.Signal_Name := "selection-received";

Signal_Selection_Request_Event (Glib.Signal_Name)

Signal_Selection_Request_Event : constant Glib.Signal_Name := "selection-request-event";

Signal_Show (Glib.Signal_Name)

Signal_Show : constant Glib.Signal_Name := "show";

Signal_Show_Help (Glib.Signal_Name)

Signal_Show_Help : constant Glib.Signal_Name := "show-help";

Signal_Size_Allocate (Glib.Signal_Name)

Signal_Size_Allocate : constant Glib.Signal_Name := "size-allocate";

Signal_State_Changed (Glib.Signal_Name)

Signal_State_Changed : constant Glib.Signal_Name := "state-changed";

Signal_State_Flags_Changed (Glib.Signal_Name)

Signal_State_Flags_Changed : constant Glib.Signal_Name := "state-flags-changed";

Signal_Style_Set (Glib.Signal_Name)

Signal_Style_Set : constant Glib.Signal_Name := "style-set";

Signal_Style_Updated (Glib.Signal_Name)

Signal_Style_Updated : constant Glib.Signal_Name := "style-updated";

Signal_Touch_Event (Glib.Signal_Name)

Signal_Touch_Event : constant Glib.Signal_Name := "touch-event";

Signal_Unmap (Glib.Signal_Name)

Signal_Unmap : constant Glib.Signal_Name := "unmap";

Signal_Unmap_Event (Glib.Signal_Name)

Signal_Unmap_Event : constant Glib.Signal_Name := "unmap-event";

Signal_Unrealize (Glib.Signal_Name)

Signal_Unrealize : constant Glib.Signal_Name := "unrealize";

Signal_Visibility_Notify_Event (Glib.Signal_Name)

Signal_Visibility_Notify_Event : constant Glib.Signal_Name := "visibility-notify-event";

Signal_Window_State_Event (Glib.Signal_Name)

Signal_Window_State_Event : constant Glib.Signal_Name := "window-state-event";

Subprograms & Entries

From_Object_Free

function From_Object_Free 
(B: access Gtk_Requisition) return Gtk_Requisition;

From_Object_Free

function From_Object_Free 
(B: access Gtk_Widget_Path) return Gtk_Widget_Path;

Convert

function Convert 
(R: Gtk.Widget.Gtk_Widget) return System.Address;

Convert

function Convert 
(R: System.Address) return Gtk.Widget.Gtk_Widget;

Get_Type

function Get_Type return Glib.GType;

Activate

function Activate 
(Widget: not null access Gtk_Widget_Record) return Boolean;
For widgets that can be "activated" (buttons, menu items, etc.) this function activates them. Activation is what happens when you press Enter on a widget during key navigation. If Widget isn't activatable, the function returns False.

Add_Accelerator

procedure Add_Accelerator 
(Widget: not null access Gtk_Widget_Record;
Accel_Signal: UTF8_String;
Accel_Group: not null access Gtk.Accel_Group.Gtk_Accel_Group_Record'Class;
Accel_Key: Gdk.Types.Gdk_Key_Type;
Accel_Mods: Gdk.Types.Gdk_Modifier_Type;
Accel_Flags: Gtk.Accel_Group.Gtk_Accel_Flags);
Installs an accelerator for this Widget in Accel_Group that causes Accel_Signal to be emitted if the accelerator is activated. The Accel_Group needs to be added to the widget's toplevel via Gtk.Window.Add_Accel_Group, and the signal must be of type G_SIGNAL_ACTION. Accelerators added through this function are not user changeable during runtime. If you want to support accelerators that can be changed by the user, use Gtk.Accel_Map.Add_Entry and Gtk.Widget.Set_Accel_Path or Gtk.Menu_Item.Set_Accel_Path instead. "accel_signal": widget signal to emit on accelerator activation "accel_group": accel group for this widget, added to its toplevel "accel_key": GDK keyval of the accelerator "accel_mods": modifier key combination of the accelerator "accel_flags": flag accelerators, e.g. Gtk.Target_List.Accel_Visible

Add_Device_Events

procedure Add_Device_Events 
(Widget: not null access Gtk_Widget_Record;
Device: not null access Gdk.Device.Gdk_Device_Record'Class;
Events: Gdk.Event.Gdk_Event_Mask);
Adds the device events in the bitfield Events to the event mask for Widget. See Gtk.Widget.Set_Device_Events for details. Since: gtk+ 3.0 "device": a Gdk.Device.Gdk_Device "events": an event mask, see Gdk.Event.Gdk_Event_Mask

Add_Events

procedure Add_Events 
(Widget: not null access Gtk_Widget_Record;
Events: Gdk.Event.Gdk_Event_Mask);
Adds the events in the bitfield Events to the event mask for Widget. See Gtk.Widget.Set_Events for details. "events": an event mask, see Gdk.Event.Gdk_Event_Mask

Add_Mnemonic_Label

procedure Add_Mnemonic_Label 
(Widget: not null access Gtk_Widget_Record;
Label: not null access Gtk_Widget_Record'Class);
Adds a widget to the list of mnemonic labels for this widget. (See Gtk.Widget.List_Mnemonic_Labels). Note the list of mnemonic labels for the widget is cleared when the widget is destroyed, so the caller must make sure to update its internal state at this point as well, by using a connection to the Gtk.Widget.Gtk_Widget::destroy signal or a weak notifier. Since: gtk+ 2.4 "label": a Gtk.Widget.Gtk_Widget that acts as a mnemonic label for Widget

Add_Tick_Callback

function Add_Tick_Callback 
(Widget: not null access Gtk_Widget_Record;
Callback: Gtk_Tick_Callback;
Notify: Glib.G_Destroy_Notify_Address) return Guint;
Queues a animation frame update and adds a callback to be called before each frame. Until the tick callback is removed, it will be called frequently (usually at the frame rate of the output device or as quickly as the application an be repainted, whichever is slower). For this reason, is most suitable for handling graphics that change every frame or every few frames. The tick callback does not automatically imply a relayout or repaint. If you want a repaint or relayout, and aren't changing widget properties that would trigger that (for example, changing the text of a Gtk.Label.Gtk_Label), then you will have to call Gtk.Widget.Queue_Resize or Gtk.Widget.Queue_Draw_Area yourself. Gdk.Frame_Clock.Get_Frame_Time should generally be used for timing continuous animations and Gdk.Frame_Timings.Get_Predicted_Presentation_Time if you are trying to display isolated frames at particular times. This is a more convenient alternative to connecting directly to the Gdk.Frame_Clock.Gdk_Frame_Clock::update signal of Gdk.Frame_Clock.Gdk_Frame_Clock, since you don't have to worry about when a Gdk.Frame_Clock.Gdk_Frame_Clock is assigned to a widget. Since: gtk+ 3.8 "callback": function to call for updating animations "notify": function to call to free User_Data when the callback is removed.

Can_Activate_Accel

function Can_Activate_Accel 
(Widget: not null access Gtk_Widget_Record;
Signal_Id: Guint) return Boolean;
Determines whether an accelerator that activates the signal identified by Signal_Id can currently be activated. This is done by emitting the Gtk.Widget.Gtk_Widget::can-activate-accel signal on Widget; if the signal isn't overridden by a handler or in a derived widget, then the default check is that the widget must be sensitive, and the widget and all its ancestors mapped. Since: gtk+ 2.4 "signal_id": the ID of a signal installed on Widget

Child_Focus

function Child_Focus 
(Widget: not null access Gtk_Widget_Record;
Direction: Gtk.Enums.Gtk_Direction_Type) return Boolean;
This function is used by custom widget implementations; if you're writing an app, you'd use Gtk.Widget.Grab_Focus to move the focus to a particular widget, and Gtk.Container.Set_Focus_Chain to change the focus tab order. So you may want to investigate those functions instead. Gtk.Widget.Child_Focus is called by containers as the user moves around the window using keyboard shortcuts. Direction indicates what kind of motion is taking place (up, down, left, right, tab forward, tab backward). Gtk.Widget.Child_Focus emits the Gtk.Widget.Gtk_Widget::focus signal; widgets override the default handler for this signal in order to implement appropriate focus behavior. The default ::focus handler for a widget should return True if moving in Direction left the focus on a focusable location inside that widget, and False if moving in Direction moved the focus outside the widget. If returning True, widgets normally call Gtk.Widget.Grab_Focus to place the focus accordingly; if returning False, they don't modify the current focus location. "direction": direction of focus movement

Child_Notify

procedure Child_Notify 
(Widget: not null access Gtk_Widget_Record;
Child_Property: UTF8_String);
Emits a Gtk.Widget.Gtk_Widget::child-notify signal for the <link linkend="child-properties">child property</link> Child_Property on Widget. This is the analogue of g_object_notify for child properties. Also see Gtk.Container.Child_Notify. "child_property": the name of a child property installed on the class of Widget<!-- -->'s parent

Compute_Expand

function Compute_Expand 
(Widget: not null access Gtk_Widget_Record;
Orientation: Gtk.Enums.Gtk_Orientation) return Boolean;
Computes whether a container should give this widget extra space when possible. Containers should check this, rather than looking at Gtk.Widget.Get_Hexpand or Gtk.Widget.Get_Vexpand. This function already checks whether the widget is visible, so visibility does not need to be checked separately. Non-visible widgets are not expanded. The computed expand value uses either the expand setting explicitly set on the widget itself, or, if none has been explicitly set, the widget may expand if some of its children do. "orientation": expand direction

Create_Pango_Context

function Create_Pango_Context 
(Widget: not null access Gtk_Widget_Record) return Pango.Context.Pango_Context;
Creates a new Pango.Context.Pango_Context with the appropriate font map, font description, and base direction for drawing text for this widget. See also Gtk.Widget.Get_Pango_Context.

Create_Pango_Layout

function Create_Pango_Layout 
(Widget: not null access Gtk_Widget_Record;
Text: UTF8_String := "") return Pango.Layout.Pango_Layout;
Creates a new Pango.Layout.Pango_Layout with the appropriate font map, font description, and base direction for drawing text for this widget. If you keep a Pango.Layout.Pango_Layout created in this way around, you need to re-create it when the widget Pango.Context.Pango_Context is replaced. This can be tracked by using the Gtk.Widget.Gtk_Widget::screen-changed signal on the widget. "text": text to set on the layout (can be null)

Destroy

procedure Destroy 
(Widget: not null access Gtk_Widget_Record);
Destroys a widget. When a widget is destroyed, it will break any references it holds to other objects. If the widget is inside a container, the widget will be removed from the container. If the widget is a toplevel (derived from Gtk.Window.Gtk_Window), it will be removed from the list of toplevels, and the reference GTK+ holds to it will be removed. Removing a widget from its container or the list of toplevels results in the widget being finalized, unless you've added additional references to the widget with g_object_ref. In most cases, only toplevel widgets (windows) require explicit destruction, because when you destroy a toplevel its children will be destroyed as well.

Destroyed

procedure Destroyed 
(Widget: not null access Gtk_Widget_Record;
Widget_Pointer: in out Gtk_Widget);
This function sets *Widget_Pointer to null if Widget_Pointer != null. It's intended to be used as a callback connected to the "destroy" signal of a widget. You connect Gtk.Widget.Destroyed as a signal handler, and pass the address of your widget variable as user data. Then when the widget is destroyed, the variable will be set to null. Useful for example to avoid multiple copies of the same dialog. "widget_pointer": address of a variable that contains Widget

Device_Is_Shadowed

function Device_Is_Shadowed 
(Widget: not null access Gtk_Widget_Record;
Device: not null access Gdk.Device.Gdk_Device_Record'Class) return Boolean;
Returns True if Device has been shadowed by a GTK+ device grab on another widget, so it would stop sending events to Widget. This may be used in the Gtk.Widget.Gtk_Widget::grab-notify signal to check for specific devices. See Gtk.Main.Device_Grab_Add. Since: gtk+ 3.0 "device": a Gdk.Device.Gdk_Device

Drag_Check_Threshold

function Drag_Check_Threshold 
(Widget: not null access Gtk_Widget_Record;
Start_X: Gint;
Start_Y: Gint;
Current_X: Gint;
Current_Y: Gint) return Boolean;
"start_x": X coordinate of start of drag "start_y": Y coordinate of start of drag "current_x": current X coordinate "current_y": current Y coordinate

Drag_Dest_Add_Image_Targets

procedure Drag_Dest_Add_Image_Targets 
(Widget: not null access Gtk_Widget_Record);

Drag_Dest_Add_Text_Targets

procedure Drag_Dest_Add_Text_Targets 
(Widget: not null access Gtk_Widget_Record);

Drag_Dest_Add_Uri_Targets

procedure Drag_Dest_Add_Uri_Targets 
(Widget: not null access Gtk_Widget_Record);

Drag_Dest_Get_Track_Motion

function Drag_Dest_Get_Track_Motion 
(Widget: not null access Gtk_Widget_Record) return Boolean;

Drag_Dest_Set_Track_Motion

procedure Drag_Dest_Set_Track_Motion 
(Widget: not null access Gtk_Widget_Record;
Track_Motion: Boolean);
"track_motion": whether to accept all targets

Drag_Dest_Set_Proxy

procedure Drag_Dest_Set_Proxy 
(Widget: not null access Gtk_Widget_Record;
Proxy_Window: Gdk.Gdk_Window;
Protocol: Gdk.Drag_Contexts.Gdk_Drag_Protocol;
Use_Coordinates: Boolean);
"proxy_window": the window to which to forward drag events "protocol": the drag protocol which the Proxy_Window accepts (You can use gdk_drag_get_protocol to determine this) "use_coordinates": If True, send the same coordinates to the destination, because it is an embedded subwindow.

Drag_Dest_Unset

procedure Drag_Dest_Unset 
(Widget: not null access Gtk_Widget_Record);

Drag_Get_Data

procedure Drag_Get_Data 
(Widget: not null access Gtk_Widget_Record;
Context: not null access Gdk.Drag_Contexts.Drag_Context_Record'Class;
Target: Gdk.Types.Gdk_Atom;
Time: Guint32);
"context": the drag context "target": the target (form of the data) to retrieve. "time_": a timestamp for retrieving the data. This will generally be the time received in a Gtk.Widget.Gtk_Widget::drag-motion" or Gtk.Widget.Gtk_Widget::drag-drop" signal.

Drag_Highlight

procedure Drag_Highlight 
(Widget: not null access Gtk_Widget_Record);

Drag_Source_Add_Image_Targets

procedure Drag_Source_Add_Image_Targets 
(Widget: not null access Gtk_Widget_Record);

Drag_Source_Add_Uri_Targets

procedure Drag_Source_Add_Uri_Targets 
(Widget: not null access Gtk_Widget_Record);

Drag_Source_Set_Icon_Pixbuf

procedure Drag_Source_Set_Icon_Pixbuf 
(Widget: not null access Gtk_Widget_Record;
Pixbuf: not null access Gdk.Pixbuf.Gdk_Pixbuf_Record'Class);
"pixbuf": the Gdk.Pixbuf.Gdk_Pixbuf for the drag icon

Drag_Source_Unset

procedure Drag_Source_Unset 
(Widget: not null access Gtk_Widget_Record);

Drag_Unhighlight

procedure Drag_Unhighlight 
(Widget: not null access Gtk_Widget_Record);

Draw

procedure Draw 
(Widget: not null access Gtk_Widget_Record;
Cr: Cairo.Cairo_Context);
Draws Widget to Cr. The top left corner of the widget will be drawn to the currently set origin point of Cr. You should pass a cairo context as Cr argument that is in an original state. Otherwise the resulting drawing is undefined. For example changing the operator using cairo_set_operator or the line width using cairo_set_line_width might have unwanted side effects. You may however change the context's transform matrix - like with cairo_scale, cairo_translate or cairo_set_matrix and clip region with cairo_clip prior to calling this function. Also, it is fine to modify the context with cairo_save and cairo_push_group prior to calling this function. Note: Special purpose widgets may contain special code for rendering to the screen and might appear differently on screen and when rendered using Gtk.Widget.Draw. Since: gtk+ 3.0 "cr": a cairo context to draw to

Ensure_Style

procedure Ensure_Style 
(Widget: not null access Gtk_Widget_Record);

Error_Bell

procedure Error_Bell 
(Widget: not null access Gtk_Widget_Record);
Notifies the user about an input-related error on this widget. If the Gtk.Settings.Gtk_Settings:gtk-error-bell setting is True, it calls Gdk.Window.Beep, otherwise it does nothing. Note that the effect of Gdk.Window.Beep can be configured in many ways, depending on the windowing backend and the desktop environment or window manager that is used. Since: gtk+ 2.12

Event

function Event 
(Widget: not null access Gtk_Widget_Record;
Event: Gdk.Event.Gdk_Event) return Boolean;
Rarely-used function. This function is used to emit the event signals on a widget (those signals should never be emitted without using this function to do so). If you want to synthesize an event though, don't use this function; instead, use Gtk.Main.Main_Do_Event so the event will behave as if it were in the event queue. Don't synthesize expose events; instead, use Gdk.Window.Invalidate_Rect to invalidate a region of the window. "event": a Gdk.Event.Gdk_Event

Freeze_Child_Notify

procedure Freeze_Child_Notify 
(Widget: not null access Gtk_Widget_Record);
Stops emission of Gtk.Widget.Gtk_Widget::child-notify signals on Widget. The signals are queued until Gtk.Widget.Thaw_Child_Notify is called on Widget. This is the analogue of g_object_freeze_notify for child properties.

Get_Allocated_Height

function Get_Allocated_Height 
(Widget: not null access Gtk_Widget_Record) return Gint;
Returns the height that has currently been allocated to Widget. This function is intended to be used when implementing handlers for the Gtk.Widget.Gtk_Widget::draw function.

Get_Allocated_Width

function Get_Allocated_Width 
(Widget: not null access Gtk_Widget_Record) return Gint;
Returns the width that has currently been allocated to Widget. This function is intended to be used when implementing handlers for the Gtk.Widget.Gtk_Widget::draw function.

Get_Allocation

procedure Get_Allocation 
(Widget: not null access Gtk_Widget_Record;
Allocation: out Gtk_Allocation);
Retrieves the widget's allocation. Note, when implementing a Gtk.Container.Gtk_Container: a widget's allocation will be its "adjusted" allocation, that is, the widget's parent container typically calls Gtk.Widget.Size_Allocate with an allocation, and that allocation is then adjusted (to handle margin and alignment for example) before assignment to the widget. Gtk.Widget.Get_Allocation returns the adjusted allocation that was actually assigned to the widget. The adjusted allocation is guaranteed to be completely contained within the Gtk.Widget.Size_Allocate allocation, however. So a Gtk.Container.Gtk_Container is guaranteed that its children stay inside the assigned bounds, but not that they have exactly the bounds the container assigned. There is no way to get the original allocation assigned by Gtk.Widget.Size_Allocate, since it isn't stored; if a container implementation needs that information it will have to track it itself. Since: gtk+ 2.18 "allocation": a pointer to a Gtk_Allocation to copy to

Set_Allocation

procedure Set_Allocation 
(Widget: not null access Gtk_Widget_Record;
Allocation: in out Gtk_Allocation);
Sets the widget's allocation. This should not be used directly, but from within a widget's size_allocate method. The allocation set should be the "adjusted" or actual allocation. If you're implementing a Gtk.Container.Gtk_Container, you want to use Gtk.Widget.Size_Allocate instead of Gtk.Widget.Set_Allocation. The GtkWidgetClass::adjust_size_allocation virtual method adjusts the allocation inside Gtk.Widget.Size_Allocate to create an adjusted allocation. Since: gtk+ 2.18 "allocation": a pointer to a Gtk_Allocation to copy from

Get_Ancestor

function Get_Ancestor 
(Widget: not null access Gtk_Widget_Record;
Widget_Type: GType) return Gtk_Widget;
Gets the first ancestor of Widget with type Widget_Type. For example, 'gtk_widget_get_ancestor (widget, GTK_TYPE_BOX)' gets the first Gtk.Box.Gtk_Box that's an ancestor of Widget. No reference will be added to the returned widget; it should not be unreferenced. See note about checking for a toplevel Gtk.Window.Gtk_Window in the docs for Gtk.Widget.Get_Toplevel. Note that unlike Gtk.Widget.Is_Ancestor, Gtk.Widget.Get_Ancestor considers Widget to be an ancestor of itself. "widget_type": ancestor type

Get_App_Paintable

function Get_App_Paintable 
(Widget: not null access Gtk_Widget_Record) return Boolean;
Determines whether the application intends to draw on the widget in an Gtk.Widget.Gtk_Widget::draw handler. See Gtk.Widget.Set_App_Paintable Since: gtk+ 2.18

Set_App_Paintable

procedure Set_App_Paintable 
(Widget: not null access Gtk_Widget_Record;
App_Paintable: Boolean);
Sets whether the application intends to draw on the widget in an Gtk.Widget.Gtk_Widget::draw handler. This is a hint to the widget and does not affect the behavior of the GTK+ core; many widgets ignore this flag entirely. For widgets that do pay attention to the flag, such as Gtk.Event_Box.Gtk_Event_Box and Gtk.Window.Gtk_Window, the effect is to suppress default themed drawing of the widget's background. (Children of the widget will still be drawn.) The application is then entirely responsible for drawing the widget background. Note that the background is still drawn when the widget is mapped. "app_paintable": True if the application will paint on the widget

Get_Can_Default

function Get_Can_Default 
(Widget: not null access Gtk_Widget_Record) return Boolean;
Determines whether Widget can be a default widget. See Gtk.Widget.Set_Can_Default. Since: gtk+ 2.18

Set_Can_Default

procedure Set_Can_Default 
(Widget: not null access Gtk_Widget_Record;
Can_Default: Boolean);
Specifies whether Widget can be a default widget. See Gtk.Widget.Grab_Default for details about the meaning of "default". Since: gtk+ 2.18 "can_default": whether or not Widget can be a default widget.

Get_Can_Focus

function Get_Can_Focus 
(Widget: not null access Gtk_Widget_Record) return Boolean;
Determines whether Widget can own the input focus. See Gtk.Widget.Set_Can_Focus. Since: gtk+ 2.18

Set_Can_Focus

procedure Set_Can_Focus 
(Widget: not null access Gtk_Widget_Record;
Can_Focus: Boolean);
Specifies whether Widget can own the input focus. See Gtk.Widget.Grab_Focus for actually setting the input focus on a widget. Since: gtk+ 2.18 "can_focus": whether or not Widget can own the input focus.

Get_Child_Requisition

procedure Get_Child_Requisition 
(Widget: not null access Gtk_Widget_Record;
Requisition: out Gtk_Requisition);

Get_Child_Visible

function Get_Child_Visible 
(Widget: not null access Gtk_Widget_Record) return Boolean;
Gets the value set with Gtk.Widget.Set_Child_Visible. If you feel a need to use this function, your code probably needs reorganization. This function is only useful for container implementations and never should be called by an application.

Set_Child_Visible

procedure Set_Child_Visible 
(Widget: not null access Gtk_Widget_Record;
Is_Visible: Boolean);
Sets whether Widget should be mapped along with its when its parent is mapped and Widget has been shown with Gtk.Widget.Show. The child visibility can be set for widget before it is added to a container with Gtk.Widget.Set_Parent, to avoid mapping children unnecessary before immediately unmapping them. However it will be reset to its default state of True when the widget is removed from a container. Note that changing the child visibility of a widget does not queue a resize on the widget. Most of the time, the size of a widget is computed from all visible children, whether or not they are mapped. If this is not the case, the container can queue a resize itself. This function is only useful for container implementations and never should be called by an application. "is_visible": if True, Widget should be mapped along with its parent.

Get_Composite_Name

function Get_Composite_Name 
(Widget: not null access Gtk_Widget_Record) return UTF8_String;
Obtains the composite name of a widget.

Set_Composite_Name

procedure Set_Composite_Name 
(Widget: not null access Gtk_Widget_Record;
Name: UTF8_String);
Sets a widgets composite name. The widget must be a composite child of its parent; see Gtk.Widget.Push_Composite_Child. "name": the name to set

Get_Device_Enabled

function Get_Device_Enabled 
(Widget: not null access Gtk_Widget_Record;
Device: not null access Gdk.Device.Gdk_Device_Record'Class) return Boolean;
Returns whether Device can interact with Widget and its children. See Gtk.Widget.Set_Device_Enabled. Since: gtk+ 3.0 "device": a Gdk.Device.Gdk_Device

Set_Device_Enabled

procedure Set_Device_Enabled 
(Widget: not null access Gtk_Widget_Record;
Device: not null access Gdk.Device.Gdk_Device_Record'Class;
Enabled: Boolean);
Enables or disables a Gdk.Device.Gdk_Device to interact with Widget and all its children. It does so by descending through the Gdk.Gdk_Window hierarchy and enabling the same mask that is has for core events (i.e. the one that Gdk.Window.Get_Events returns). Since: gtk+ 3.0 "device": a Gdk.Device.Gdk_Device "enabled": whether to enable the device

Get_Device_Events

function Get_Device_Events 
(Widget: not null access Gtk_Widget_Record;
Device: not null access Gdk.Device.Gdk_Device_Record'Class) return Gdk.Event.Gdk_Event_Mask;
Returns the events mask for the widget corresponding to an specific device. These are the events that the widget will receive when Device operates on it. Since: gtk+ 3.0 "device": a Gdk.Device.Gdk_Device

Set_Device_Events

procedure Set_Device_Events 
(Widget: not null access Gtk_Widget_Record;
Device: not null access Gdk.Device.Gdk_Device_Record'Class;
Events: Gdk.Event.Gdk_Event_Mask);
Sets the device event mask (see Gdk.Event.Gdk_Event_Mask) for a widget. The event mask determines which events a widget will receive from Device. Keep in mind that different widgets have different default event masks, and by changing the event mask you may disrupt a widget's functionality, so be careful. This function must be called while a widget is unrealized. Consider Gtk.Widget.Add_Device_Events for widgets that are already realized, or if you want to preserve the existing event mask. This function can't be used with GTK_NO_WINDOW widgets; to get events on those widgets, place them inside a Gtk.Event_Box.Gtk_Event_Box and receive events on the event box. Since: gtk+ 3.0 "device": a Gdk.Device.Gdk_Device "events": event mask

Get_Direction

function Get_Direction 
(Widget: not null access Gtk_Widget_Record) return Gtk.Enums.Gtk_Text_Direction;
Gets the reading direction for a particular widget. See Gtk.Widget.Set_Direction.

Set_Direction

procedure Set_Direction 
(Widget: not null access Gtk_Widget_Record;
Dir: Gtk.Enums.Gtk_Text_Direction);
Sets the reading direction on a particular widget. This direction controls the primary direction for widgets containing text, and also the direction in which the children of a container are packed. The ability to set the direction is present in order so that correct localization into languages with right-to-left reading directions can be done. Generally, applications will let the default reading direction present, except for containers where the containers are arranged in an order that is explicitely visual rather than logical (such as buttons for text justification). If the direction is set to Gtk.Enums.Text_Dir_None, then the value set by Gtk.Widget.Set_Default_Direction will be used. "dir": the new direction

Get_Display

function Get_Display 
(Widget: not null access Gtk_Widget_Record) return Gdk.Display.Gdk_Display;
Get the Gdk.Display.Gdk_Display for the toplevel window associated with this widget. This function can only be called after the widget has been added to a widget hierarchy with a Gtk.Window.Gtk_Window at the top. In general, you should only create display specific resources when a widget has been realized, and you should free those resources when the widget is unrealized. Since: gtk+ 2.2

Get_Double_Buffered

function Get_Double_Buffered 
(Widget: not null access Gtk_Widget_Record) return Boolean;
Determines whether the widget is double buffered. See Gtk.Widget.Set_Double_Buffered Since: gtk+ 2.18

Set_Double_Buffered

procedure Set_Double_Buffered 
(Widget: not null access Gtk_Widget_Record;
Double_Buffered: Boolean);
Widgets are double buffered by default; you can use this function to turn off the buffering. "Double buffered" simply means that Gdk.Window.Begin_Paint_Region and Gdk.Window.End_Paint are called automatically around expose events sent to the widget. Gdk.Window.Begin_Paint_Region diverts all drawing to a widget's window to an offscreen buffer, and Gdk.Window.End_Paint draws the buffer to the screen. The result is that users see the window update in one smooth step, and don't see individual graphics primitives being rendered. In very simple terms, double buffered widgets don't flicker, so you would only use this function to turn off double buffering if you had special needs and really knew what you were doing. Note: if you turn off double-buffering, you have to handle expose events, since even the clearing to the background color or pixmap will not happen automatically (as it is done in Gdk.Window.Begin_Paint_Region). "double_buffered": True to double-buffer a widget

Get_Events

function Get_Events 
(Widget: not null access Gtk_Widget_Record) return Gdk.Event.Gdk_Event_Mask;
Returns the event mask for the widget (a bitfield containing flags from the Gdk.Event.Gdk_Event_Mask enumeration). These are the events that the widget will receive.

Set_Events

procedure Set_Events 
(Widget: not null access Gtk_Widget_Record;
Events: Gdk.Event.Gdk_Event_Mask);
Sets the event mask (see Gdk.Event.Gdk_Event_Mask) for a widget. The event mask determines which events a widget will receive. Keep in mind that different widgets have different default event masks, and by changing the event mask you may disrupt a widget's functionality, so be careful. This function must be called while a widget is unrealized. Consider Gtk.Widget.Add_Events for widgets that are already realized, or if you want to preserve the existing event mask. This function can't be used with GTK_NO_WINDOW widgets; to get events on those widgets, place them inside a Gtk.Event_Box.Gtk_Event_Box and receive events on the event box. "events": event mask

Get_Frame_Clock

function Get_Frame_Clock 
(Widget: not null access Gtk_Widget_Record) return Gdk.Frame_Clock.Gdk_Frame_Clock;
Obtains the frame clock for a widget. The frame clock is a global "ticker" that can be used to drive animations and repaints. The most common reason to get the frame clock is to call Gdk.Frame_Clock.Get_Frame_Time, in order to get a time to use for animating. For example you might record the start of the animation with an initial value from Gdk.Frame_Clock.Get_Frame_Time, and then update the animation by calling Gdk.Frame_Clock.Get_Frame_Time again during each repaint. Gdk.Frame_Clock.Request_Phase will result in a new frame on the clock, but won't necessarily repaint any widgets. To repaint a widget, you have to use Gtk.Widget.Queue_Draw which invalidates the widget (thus scheduling it to receive a draw on the next frame). Gtk.Widget.Queue_Draw will also end up requesting a frame on the appropriate frame clock. A widget's frame clock will not change while the widget is mapped. Reparenting a widget (which implies a temporary unmap) can change the widget's frame clock. Unrealized widgets do not have a frame clock. Since: gtk+ 3.8

Get_Halign

function Get_Halign 
(Widget: not null access Gtk_Widget_Record) return Gtk_Align;
Gets the value of the Gtk.Widget.Gtk_Widget:halign property.

Set_Halign

procedure Set_Halign 
(Widget: not null access Gtk_Widget_Record;
Align: Gtk_Align);
Sets the horizontal alignment of Widget. See the Gtk.Widget.Gtk_Widget:halign property. "align": the horizontal alignment

Get_Has_Tooltip

function Get_Has_Tooltip 
(Widget: not null access Gtk_Widget_Record) return Boolean;
Returns the current value of the has-tooltip property. See Gtk.Widget.Gtk_Widget:has-tooltip for more information. Since: gtk+ 2.12

Set_Has_Tooltip

procedure Set_Has_Tooltip 
(Widget: not null access Gtk_Widget_Record;
Has_Tooltip: Boolean);
Sets the has-tooltip property on Widget to Has_Tooltip. See Gtk.Widget.Gtk_Widget:has-tooltip for more information. Since: gtk+ 2.12 "has_tooltip": whether or not Widget has a tooltip.

Get_Has_Window

function Get_Has_Window 
(Widget: not null access Gtk_Widget_Record) return Boolean;
Determines whether Widget has a Gdk.Gdk_Window of its own. See Gtk.Widget.Set_Has_Window. Since: gtk+ 2.18

Set_Has_Window

procedure Set_Has_Window 
(Widget: not null access Gtk_Widget_Record;
Has_Window: Boolean);
Specifies whether Widget has a Gdk.Gdk_Window of its own. Note that all realized widgets have a non-null "window" pointer (gtk_widget_get_window never returns a null window when a widget is realized), but for many of them it's actually the Gdk.Gdk_Window of one of its parent widgets. Widgets that do not create a %window for themselves in Gtk.Widget.Gtk_Widget::realize must announce this by calling this function with Has_Window = False. This function should only be called by widget implementations, and they should call it in their init function. Since: gtk+ 2.18 "has_window": whether or not Widget has a window.

Get_Hexpand

function Get_Hexpand 
(Widget: not null access Gtk_Widget_Record) return Boolean;
Gets whether the widget would like any available extra horizontal space. When a user resizes a Gtk.Window.Gtk_Window, widgets with expand=TRUE generally receive the extra space. For example, a list or scrollable area or document in your window would often be set to expand. Containers should use Gtk.Widget.Compute_Expand rather than this function, to see whether a widget, or any of its children, has the expand flag set. If any child of a widget wants to expand, the parent may ask to expand also. This function only looks at the widget's own hexpand flag, rather than computing whether the entire widget tree rooted at this widget wants to expand.

Set_Hexpand

procedure Set_Hexpand 
(Widget: not null access Gtk_Widget_Record;
Expand: Boolean);
Sets whether the widget would like any available extra horizontal space. When a user resizes a Gtk.Window.Gtk_Window, widgets with expand=TRUE generally receive the extra space. For example, a list or scrollable area or document in your window would often be set to expand. Call this function to set the expand flag if you would like your widget to become larger horizontally when the window has extra room. By default, widgets automatically expand if any of their children want to expand. (To see if a widget will automatically expand given its current children and state, call Gtk.Widget.Compute_Expand. A container can decide how the expandability of children affects the expansion of the container by overriding the compute_expand virtual method on Gtk.Widget.Gtk_Widget.). Setting hexpand explicitly with this function will override the automatic expand behavior. This function forces the widget to expand or not to expand, regardless of children. The override occurs because Gtk.Widget.Set_Hexpand sets the hexpand-set property (see Gtk.Widget.Set_Hexpand_Set) which causes the widget's hexpand value to be used, rather than looking at children and widget state. "expand": whether to expand

Get_Hexpand_Set

function Get_Hexpand_Set 
(Widget: not null access Gtk_Widget_Record) return Boolean;
Gets whether Gtk.Widget.Set_Hexpand has been used to explicitly set the expand flag on this widget. If hexpand is set, then it overrides any computed expand value based on child widgets. If hexpand is not set, then the expand value depends on whether any children of the widget would like to expand. There are few reasons to use this function, but it's here for completeness and consistency.

Set_Hexpand_Set

procedure Set_Hexpand_Set 
(Widget: not null access Gtk_Widget_Record;
Set: Boolean);
Sets whether the hexpand flag (see Gtk.Widget.Get_Hexpand) will be used. The hexpand-set property will be set automatically when you call Gtk.Widget.Set_Hexpand to set hexpand, so the most likely reason to use this function would be to unset an explicit expand flag. If hexpand is set, then it overrides any computed expand value based on child widgets. If hexpand is not set, then the expand value depends on whether any children of the widget would like to expand. There are few reasons to use this function, but it's here for completeness and consistency. "set": value for hexpand-set property

Get_Mapped

function Get_Mapped 
(Widget: not null access Gtk_Widget_Record) return Boolean;
Whether the widget is mapped. Since: gtk+ 2.20

Set_Mapped

procedure Set_Mapped 
(Widget: not null access Gtk_Widget_Record;
Mapped: Boolean);
Marks the widget as being realized. This function should only ever be called in a derived widget's "map" or "unmap" implementation. Since: gtk+ 2.20 "mapped": True to mark the widget as mapped

Get_Margin_Bottom

function Get_Margin_Bottom 
(Widget: not null access Gtk_Widget_Record) return Gint;
Gets the value of the Gtk.Widget.Gtk_Widget:margin-bottom property. Since: gtk+ 3.0

Set_Margin_Bottom

procedure Set_Margin_Bottom 
(Widget: not null access Gtk_Widget_Record;
Margin: Gint);
Sets the bottom margin of Widget. See the Gtk.Widget.Gtk_Widget:margin-bottom property. Since: gtk+ 3.0 "margin": the bottom margin

Get_Margin_Left

function Get_Margin_Left 
(Widget: not null access Gtk_Widget_Record) return Gint;
Gets the value of the Gtk.Widget.Gtk_Widget:margin-left property. Since: gtk+ 3.0

Set_Margin_Left

procedure Set_Margin_Left 
(Widget: not null access Gtk_Widget_Record;
Margin: Gint);
Sets the left margin of Widget. See the Gtk.Widget.Gtk_Widget:margin-left property. Since: gtk+ 3.0 "margin": the left margin

Get_Margin_Right

function Get_Margin_Right 
(Widget: not null access Gtk_Widget_Record) return Gint;
Gets the value of the Gtk.Widget.Gtk_Widget:margin-right property. Since: gtk+ 3.0

Set_Margin_Right

procedure Set_Margin_Right 
(Widget: not null access Gtk_Widget_Record;
Margin: Gint);
Sets the right margin of Widget. See the Gtk.Widget.Gtk_Widget:margin-right property. Since: gtk+ 3.0 "margin": the right margin

Get_Margin_Top

function Get_Margin_Top 
(Widget: not null access Gtk_Widget_Record) return Gint;
Gets the value of the Gtk.Widget.Gtk_Widget:margin-top property. Since: gtk+ 3.0

Set_Margin_Top

procedure Set_Margin_Top 
(Widget: not null access Gtk_Widget_Record;
Margin: Gint);
Sets the top margin of Widget. See the Gtk.Widget.Gtk_Widget:margin-top property. Since: gtk+ 3.0 "margin": the top margin

Get_Modifier_Mask

function Get_Modifier_Mask 
(Widget: not null access Gtk_Widget_Record;
Intent: Gdk_Modifier_Intent) return Gdk.Types.Gdk_Modifier_Type;
Returns the modifier mask the Widget's windowing system backend uses for a particular purpose. See gdk_keymap_get_modifier_mask. Since: gtk+ 3.4 "intent": the use case for the modifier mask

Get_Name

function Get_Name 
(Widget: not null access Gtk_Widget_Record) return UTF8_String;
Retrieves the name of a widget. See Gtk.Widget.Set_Name for the significance of widget names.

Set_Name

procedure Set_Name 
(Widget: not null access Gtk_Widget_Record;
Name: UTF8_String);
Widgets can be named, which allows you to refer to them from a CSS file. You can apply a style to widgets with a particular name in the CSS file. See the documentation for the CSS syntax (on the same page as the docs for Gtk.Style_Context.Gtk_Style_Context). Note that the CSS syntax has certain special characters to delimit and represent elements in a selector (period, &num;, >, *...), so using these will make your widget impossible to match by name. Any combination of alphanumeric symbols, dashes and underscores will suffice. "name": name for the widget

Get_No_Show_All

function Get_No_Show_All 
(Widget: not null access Gtk_Widget_Record) return Boolean;
Returns the current value of the Gtk.Widget.Gtk_Widget:no-show-all property, which determines whether calls to Gtk.Widget.Show_All will affect this widget. Since: gtk+ 2.4

Set_No_Show_All

procedure Set_No_Show_All 
(Widget: not null access Gtk_Widget_Record;
No_Show_All: Boolean);
Sets the Gtk.Widget.Gtk_Widget:no-show-all property, which determines whether calls to Gtk.Widget.Show_All will affect this widget. This is mostly for use in constructing widget hierarchies with externally controlled visibility, see Gtk.UI_Manager.Gtk_UI_Manager. Since: gtk+ 2.4 "no_show_all": the new value for the "no-show-all" property

Get_Opacity

function Get_Opacity 
(Widget: not null access Gtk_Widget_Record) return Gdouble;
Fetches the requested opacity for this widget. See Gtk.Widget.Set_Opacity. Since: gtk+ 3.8

Set_Opacity

procedure Set_Opacity 
(Widget: not null access Gtk_Widget_Record;
Opacity: Gdouble);
Request the Widget to be rendered partially transparent, with opacity 0 being fully transparent and 1 fully opaque. (Opacity values are clamped to the [0,1] range.). This works on both toplevel widget, and child widgets, although there are some limitations: For toplevel widgets this depends on the capabilities of the windowing system. On X11 this has any effect only on X screens with a compositing manager running. See Gtk.Widget.Is_Composited. On Windows it should work always, although setting a window's opacity after the window has been shown causes it to flicker once on Windows. For child widgets it doesn't work if any affected widget has a native window, or disables double buffering. Since: gtk+ 3.8 "opacity": desired opacity, between 0 and 1

Get_Pango_Context

function Get_Pango_Context 
(Widget: not null access Gtk_Widget_Record) return Pango.Context.Pango_Context;
Gets a Pango.Context.Pango_Context with the appropriate font map, font description, and base direction for this widget. Unlike the context returned by Gtk.Widget.Create_Pango_Context, this context is owned by the widget (it can be used until the screen for the widget changes or the widget is removed from its toplevel), and will be updated to match any changes to the widget's attributes. This can be tracked by using the Gtk.Widget.Gtk_Widget::screen-changed signal on the widget.

Get_Parent

function Get_Parent 
(Widget: not null access Gtk_Widget_Record) return Gtk_Widget;
Returns the parent container of Widget.

Set_Parent

procedure Set_Parent 
(Widget: not null access Gtk_Widget_Record;
Parent: not null access Gtk_Widget_Record'Class);
This function is useful only when implementing subclasses of Gtk.Container.Gtk_Container. Sets the container as the parent of Widget, and takes care of some details such as updating the state and style of the child to reflect its new location. The opposite function is Gtk.Widget.Unparent. "parent": parent container

Get_Parent_Window

function Get_Parent_Window 
(Widget: not null access Gtk_Widget_Record) return Gdk.Gdk_Window;
Gets Widget's parent window.

Set_Parent_Window

procedure Set_Parent_Window 
(Widget: not null access Gtk_Widget_Record;
Parent_Window: Gdk.Gdk_Window);
Sets a non default parent window for Widget. For GtkWindow classes, setting a Parent_Window effects whether the window is a toplevel window or can be embedded into other widgets. Note: For GtkWindow classes, this needs to be called before the window is realized. "parent_window": the new parent window.

Get_Path

function Get_Path 
(Widget: not null access Gtk_Widget_Record) return Gtk_Widget_Path;
Returns the Gtk.Widget.Gtk_Widget_Path representing Widget, if the widget is not connected to a toplevel widget, a partial path will be created.

Get_Pointer

procedure Get_Pointer 
(Widget: not null access Gtk_Widget_Record;
X: out Gint;
Y: out Gint);

Get_Preferred_Height

procedure Get_Preferred_Height 
(Widget: not null access Gtk_Widget_Record;
Minimum_Height: out Gint;
Natural_Height: out Gint);
Retrieves a widget's initial minimum and natural height. Note: This call is specific to width-for-height requests. The returned request will be modified by the GtkWidgetClass::adjust_size_request virtual method and by any Gtk.Size_Group.Gtk_Size_Group<!-- -->s that have been applied. That is, the returned request is the one that should be used for layout, not necessarily the one returned by the widget itself. Since: gtk+ 3.0 "minimum_height": location to store the minimum height, or null "natural_height": location to store the natural height, or null

Get_Preferred_Height_For_Width

procedure Get_Preferred_Height_For_Width 
(Widget: not null access Gtk_Widget_Record;
Width: Gint;
Minimum_Height: out Gint;
Natural_Height: out Gint);
Retrieves a widget's minimum and natural height if it would be given the specified Width. The returned request will be modified by the GtkWidgetClass::adjust_size_request virtual method and by any Gtk.Size_Group.Gtk_Size_Group<!-- -->s that have been applied. That is, the returned request is the one that should be used for layout, not necessarily the one returned by the widget itself. Since: gtk+ 3.0 "width": the width which is available for allocation "minimum_height": location for storing the minimum height, or null "natural_height": location for storing the natural height, or null

Get_Preferred_Size

procedure Get_Preferred_Size 
(Widget: not null access Gtk_Widget_Record;
Minimum_Size: out Gtk_Requisition;
Natural_Size: out Gtk_Requisition);
Retrieves the minimum and natural size of a widget, taking into account the widget's preference for height-for-width management. This is used to retrieve a suitable size by container widgets which do not impose any restrictions on the child placement. It can be used to deduce toplevel window and menu sizes as well as child widgets in free-form containers such as GtkLayout. Note: Handle with care. Note that the natural height of a height-for-width widget will generally be a smaller size than the minimum height, since the required height for the natural width is generally smaller than the required height for the minimum width. Since: gtk+ 3.0 "minimum_size": location for storing the minimum size, or null "natural_size": location for storing the natural size, or null

Get_Preferred_Width

procedure Get_Preferred_Width 
(Widget: not null access Gtk_Widget_Record;
Minimum_Width: out Gint;
Natural_Width: out Gint);
Retrieves a widget's initial minimum and natural width. Note: This call is specific to height-for-width requests. The returned request will be modified by the GtkWidgetClass::adjust_size_request virtual method and by any Gtk.Size_Group.Gtk_Size_Group<!-- -->s that have been applied. That is, the returned request is the one that should be used for layout, not necessarily the one returned by the widget itself. Since: gtk+ 3.0 "minimum_width": location to store the minimum width, or null "natural_width": location to store the natural width, or null

Get_Preferred_Width_For_Height

procedure Get_Preferred_Width_For_Height 
(Widget: not null access Gtk_Widget_Record;
Height: Gint;
Minimum_Width: out Gint;
Natural_Width: out Gint);
Retrieves a widget's minimum and natural width if it would be given the specified Height. The returned request will be modified by the GtkWidgetClass::adjust_size_request virtual method and by any Gtk.Size_Group.Gtk_Size_Group<!-- -->s that have been applied. That is, the returned request is the one that should be used for layout, not necessarily the one returned by the widget itself. Since: gtk+ 3.0 "height": the height which is available for allocation "minimum_width": location for storing the minimum width, or null "natural_width": location for storing the natural width, or null

Get_Realized

function Get_Realized 
(Widget: not null access Gtk_Widget_Record) return Boolean;
Determines whether Widget is realized. Since: gtk+ 2.20

Set_Realized

procedure Set_Realized 
(Widget: not null access Gtk_Widget_Record;
Realized: Boolean);
Marks the widget as being realized. This function should only ever be called in a derived widget's "realize" or "unrealize" implementation. Since: gtk+ 2.20 "realized": True to mark the widget as realized

Get_Receives_Default

function Get_Receives_Default 
(Widget: not null access Gtk_Widget_Record) return Boolean;
Determines whether Widget is always treated as the default widget within its toplevel when it has the focus, even if another widget is the default. See Gtk.Widget.Set_Receives_Default. Since: gtk+ 2.18

Set_Receives_Default

procedure Set_Receives_Default 
(Widget: not null access Gtk_Widget_Record;
Receives_Default: Boolean);
Specifies whether Widget will be treated as the default widget within its toplevel when it has the focus, even if another widget is the default. See Gtk.Widget.Grab_Default for details about the meaning of "default". Since: gtk+ 2.18 "receives_default": whether or not Widget can be a default widget.

Get_Request_Mode

function Get_Request_Mode 
(Widget: not null access Gtk_Widget_Record) return Gtk.Enums.Gtk_Size_Request_Mode;
Gets whether the widget prefers a height-for-width layout or a width-for-height layout. Note: Gtk.Bin.Gtk_Bin widgets generally propagate the preference of their child, container widgets need to request something either in context of their children or in context of their allocation capabilities. Since: gtk+ 3.0

Get_Requisition

procedure Get_Requisition 
(Widget: not null access Gtk_Widget_Record;
Requisition: out Gtk_Requisition);

Get_Root_Window

function Get_Root_Window 
(Widget: not null access Gtk_Widget_Record) return Gdk.Gdk_Window;
Get the root window where this widget is located. This function can only be called after the widget has been added to a widget hierarchy with Gtk.Window.Gtk_Window at the top. The root window is useful for such purposes as creating a popup Gdk.Gdk_Window associated with the window. In general, you should only create display specific resources when a widget has been realized, and you should free those resources when the widget is unrealized. Since: gtk+ 2.2

Get_Screen

function Get_Screen 
(Widget: not null access Gtk_Widget_Record) return Gdk.Screen.Gdk_Screen;
Get the Gdk.Screen.Gdk_Screen from the toplevel window associated with this widget. This function can only be called after the widget has been added to a widget hierarchy with a Gtk.Window.Gtk_Window at the top. In general, you should only create screen specific resources when a widget has been realized, and you should free those resources when the widget is unrealized. Since: gtk+ 2.2

Get_Sensitive

function Get_Sensitive 
(Widget: not null access Gtk_Widget_Record) return Boolean;
Returns the widget's sensitivity (in the sense of returning the value that has been set using Gtk.Widget.Set_Sensitive). The effective sensitivity of a widget is however determined by both its own and its parent widget's sensitivity. See Gtk.Widget.Is_Sensitive. Since: gtk+ 2.18

Set_Sensitive

procedure Set_Sensitive 
(Widget: not null access Gtk_Widget_Record;
Sensitive: Boolean := True);
Sets the sensitivity of a widget. A widget is sensitive if the user can interact with it. Insensitive widgets are "grayed out" and the user can't interact with them. Insensitive widgets are known as "inactive", "disabled", or "ghosted" in some other toolkits. "sensitive": True to make the widget sensitive

Get_Size_Request

procedure Get_Size_Request 
(Widget: not null access Gtk_Widget_Record;
Width: out Gint;
Height: out Gint);
Gets the size request that was explicitly set for the widget using Gtk.Widget.Set_Size_Request. A value of -1 stored in Width or Height indicates that that dimension has not been set explicitly and the natural requisition of the widget will be used intead. See Gtk.Widget.Set_Size_Request. To get the size a widget will actually request, call Gtk.Widget.Get_Preferred_Size instead of this function. "width": return location for width, or null "height": return location for height, or null

Set_Size_Request

procedure Set_Size_Request 
(Widget: not null access Gtk_Widget_Record;
Width: Gint := -1;
Height: Gint := -1);
Sets the minimum size of a widget; that is, the widget's size request will be at least Width by Height. You can use this function to force a widget to be larger than it normally would be. In most cases, Gtk.Window.Set_Default_Size is a better choice for toplevel windows than this function; setting the default size will still allow users to shrink the window. Setting the size request will force them to leave the window at least as large as the size request. When dealing with window sizes, Gtk.Window.Set_Geometry_Hints can be a useful function as well. Note the inherent danger of setting any fixed size - themes, translations into other languages, different fonts, and user action can all change the appropriate size for a given widget. So, it's basically impossible to hardcode a size that will always be correct. The size request of a widget is the smallest size a widget can accept while still functioning well and drawing itself correctly. However in some strange cases a widget may be allocated less than its requested size, and in many cases a widget may be allocated more space than it requested. If the size request in a given direction is -1 (unset), then the "natural" size request of the widget will be used instead. The size request set here does not include any margin from the Gtk.Widget.Gtk_Widget properties margin-left, margin-right, margin-top, and margin-bottom, but it does include pretty much all other padding or border properties set by any subclass of Gtk.Widget.Gtk_Widget. "width": width Widget should request, or -1 to unset "height": height Widget should request, or -1 to unset

Size_Request

procedure Size_Request 
(Widget: not null access Gtk_Widget_Record;
Requisition: out Gtk_Requisition);

Get_State

function Get_State 
(Widget: not null access Gtk_Widget_Record) return Gtk.Enums.Gtk_State_Type;

Set_State

procedure Set_State 
(Widget: not null access Gtk_Widget_Record;
State: Gtk.Enums.Gtk_State_Type);

Get_State_Flags

function Get_State_Flags 
(Widget: not null access Gtk_Widget_Record) return Gtk.Enums.Gtk_State_Flags;
Returns the widget state as a flag set. It is worth mentioning that the effective Gtk.Enums.Gtk_State_Flag_Insensitive state will be returned, that is, also based on parent insensitivity, even if Widget itself is sensitive. Since: gtk+ 3.0

Set_State_Flags

procedure Set_State_Flags 
(Widget: not null access Gtk_Widget_Record;
Flags: Gtk.Enums.Gtk_State_Flags;
Clear: Boolean);
This function is for use in widget implementations. Turns on flag values in the current widget state (insensitive, prelighted, etc.). It is worth mentioning that any other state than Gtk.Enums.Gtk_State_Flag_Insensitive, will be propagated down to all non-internal children if Widget is a Gtk.Container.Gtk_Container, while Gtk.Enums.Gtk_State_Flag_Insensitive itself will be propagated down to all Gtk.Container.Gtk_Container children by different means than turning on the state flag down the hierarchy, both Gtk.Widget.Get_State_Flags and Gtk.Widget.Is_Sensitive will make use of these. Since: gtk+ 3.0 "flags": State flags to turn on "clear": Whether to clear state before turning on Flags

Get_Style

function Get_Style 
(Widget: not null access Gtk_Widget_Record) return Gtk.Style.Gtk_Style;

Set_Style

procedure Set_Style 
(Widget: not null access Gtk_Widget_Record;
Style: access Gtk.Style.Gtk_Style_Record'Class);

Get_Support_Multidevice

function Get_Support_Multidevice 
(Widget: not null access Gtk_Widget_Record) return Boolean;
Returns True if Widget is multiple pointer aware. See Gtk.Widget.Set_Support_Multidevice for more information.

Set_Support_Multidevice

procedure Set_Support_Multidevice 
(Widget: not null access Gtk_Widget_Record;
Support_Multidevice: Boolean);
Enables or disables multiple pointer awareness. If this setting is True, Widget will start receiving multiple, per device enter/leave events. Note that if custom Gdk.Gdk_Window<!-- -->s are created in Gtk.Widget.Gtk_Widget::realize, Gdk.Window.Set_Support_Multidevice will have to be called manually on them. Since: gtk+ 3.0 "support_multidevice": True to support input from multiple devices.

Get_Tooltip_Markup

function Get_Tooltip_Markup 
(Widget: not null access Gtk_Widget_Record) return UTF8_String;
Gets the contents of the tooltip for Widget. Since: gtk+ 2.12

Set_Tooltip_Markup

procedure Set_Tooltip_Markup 
(Widget: not null access Gtk_Widget_Record;
Markup: UTF8_String := "");
Sets Markup as the contents of the tooltip, which is marked up with the <link linkend="PangoMarkupFormat">Pango text markup language</link>. This function will take care of setting Gtk.Widget.Gtk_Widget:has-tooltip to True and of the default handler for the Gtk.Widget.Gtk_Widget::query-tooltip signal. See also the Gtk.Widget.Gtk_Widget:tooltip-markup property and Gtk.Tooltip.Set_Markup. Since: gtk+ 2.12 "markup": the contents of the tooltip for Widget, or null

Get_Tooltip_Text

function Get_Tooltip_Text 
(Widget: not null access Gtk_Widget_Record) return UTF8_String;
Gets the contents of the tooltip for Widget. Since: gtk+ 2.12

Set_Tooltip_Text

procedure Set_Tooltip_Text 
(Widget: not null access Gtk_Widget_Record;
Text: UTF8_String := "");
Sets Text as the contents of the tooltip. This function will take care of setting Gtk.Widget.Gtk_Widget:has-tooltip to True and of the default handler for the Gtk.Widget.Gtk_Widget::query-tooltip signal. See also the Gtk.Widget.Gtk_Widget:tooltip-text property and Gtk.Tooltip.Set_Text. Since: gtk+ 2.12 "text": the contents of the tooltip for Widget

Get_Tooltip_Window

function Get_Tooltip_Window 
(Widget: not null access Gtk_Widget_Record) return Gtk_Widget;
Returns the Gtk.Window.Gtk_Window of the current tooltip. This can be the GtkWindow created by default, or the custom tooltip window set using Gtk.Widget.Set_Tooltip_Window. Since: gtk+ 2.12

Set_Tooltip_Window

procedure Set_Tooltip_Window 
(Widget: not null access Gtk_Widget_Record;
Custom_Window: access Gtk_Widget_Record'Class);
Replaces the default, usually yellow, window used for displaying tooltips with Custom_Window. GTK+ will take care of showing and hiding Custom_Window at the right moment, to behave likewise as the default tooltip window. If Custom_Window is null, the default tooltip window will be used. If the custom window should have the default theming it needs to have the name "gtk-tooltip", see Gtk.Widget.Set_Name. Since: gtk+ 2.12 "custom_window": a Gtk.Window.Gtk_Window, or null

Get_Toplevel

function Get_Toplevel 
(Widget: not null access Gtk_Widget_Record) return Gtk_Widget;
This function returns the topmost widget in the container hierarchy Widget is a part of. If Widget has no parent widgets, it will be returned as the topmost widget. No reference will be added to the returned widget; it should not be unreferenced. Note the difference in behavior vs. Gtk.Widget.Get_Ancestor; 'gtk_widget_get_ancestor (widget, GTK_TYPE_WINDOW)' would return null if Widget wasn't inside a toplevel window, and if the window was inside a Gtk.Window.Gtk_Window<!-- -->-derived widget which was in turn inside the toplevel Gtk.Window.Gtk_Window. While the second case may seem unlikely, it actually happens when a Gtk_Plug is embedded inside a Gtk_Socket within the same application. To reliably find the toplevel Gtk.Window.Gtk_Window, use Gtk.Widget.Get_Toplevel and check if the TOPLEVEL flags is set on the result. |[ GtkWidget *toplevel = gtk_widget_get_toplevel (widget); if (gtk_widget_is_toplevel (toplevel)) { /* Perform action on toplevel. */ } ]|

Get_Valign

function Get_Valign 
(Widget: not null access Gtk_Widget_Record) return Gtk_Align;
Gets the value of the Gtk.Widget.Gtk_Widget:valign property.

Set_Valign

procedure Set_Valign 
(Widget: not null access Gtk_Widget_Record;
Align: Gtk_Align);
Sets the vertical alignment of Widget. See the Gtk.Widget.Gtk_Widget:valign property. "align": the vertical alignment

Get_Vexpand

function Get_Vexpand 
(Widget: not null access Gtk_Widget_Record) return Boolean;
Gets whether the widget would like any available extra vertical space. See Gtk.Widget.Get_Hexpand for more detail.

Set_Vexpand

procedure Set_Vexpand 
(Widget: not null access Gtk_Widget_Record;
Expand: Boolean);
Sets whether the widget would like any available extra vertical space. See Gtk.Widget.Set_Hexpand for more detail. "expand": whether to expand

Get_Vexpand_Set

function Get_Vexpand_Set 
(Widget: not null access Gtk_Widget_Record) return Boolean;
Gets whether Gtk.Widget.Set_Vexpand has been used to explicitly set the expand flag on this widget. See Gtk.Widget.Get_Hexpand_Set for more detail.

Set_Vexpand_Set

procedure Set_Vexpand_Set 
(Widget: not null access Gtk_Widget_Record;
Set: Boolean);
Sets whether the vexpand flag (see Gtk.Widget.Get_Vexpand) will be used. See Gtk.Widget.Set_Hexpand_Set for more detail. "set": value for vexpand-set property

Get_Visible

function Get_Visible 
(Widget: not null access Gtk_Widget_Record) return Boolean;
Determines whether the widget is visible. If you want to take into account whether the widget's parent is also marked as visible, use Gtk.Widget.Is_Visible instead. This function does not check if the widget is obscured in any way. See Gtk.Widget.Set_Visible. Since: gtk+ 2.18

Set_Visible

procedure Set_Visible 
(Widget: not null access Gtk_Widget_Record;
Visible: Boolean);
Sets the visibility state of Widget. Note that setting this to True doesn't mean the widget is actually viewable, see Gtk.Widget.Get_Visible. This function simply calls Gtk.Widget.Show or Gtk.Widget.Hide but is nicer to use when the visibility of the widget depends on some condition. Since: gtk+ 2.18 "visible": whether the widget should be shown or not

Get_Visual

function Get_Visual 
(Widget: not null access Gtk_Widget_Record) return Gdk.Visual.Gdk_Visual;
Gets the visual that will be used to render Widget.

Set_Visual

procedure Set_Visual 
(Widget: not null access Gtk_Widget_Record;
Visual: Gdk.Visual.Gdk_Visual);
Sets the visual that should be used for by widget and its children for creating Gdk_Windows. The visual must be on the same Gdk.Screen.Gdk_Screen as returned by Gtk.Widget.Get_Screen, so handling the Gtk.Widget.Gtk_Widget::screen-changed signal is necessary. Setting a new Visual will not cause Widget to recreate its windows, so you should call this function before Widget is realized. "visual": visual to be used or null to unset a previous one

Get_Window

function Get_Window 
(Widget: not null access Gtk_Widget_Record) return Gdk.Gdk_Window;
Returns the widget's window if it is realized, null otherwise Since: gtk+ 2.14

Set_Window

procedure Set_Window 
(Widget: not null access Gtk_Widget_Record;
Window: Gdk.Gdk_Window);
Sets a widget's window. This function should only be used in a widget's Gtk.Widget.Gtk_Widget::realize implementation. The %window passed is usually either new window created with gdk_window_new, or the window of its parent widget as returned by Gtk.Widget.Get_Parent_Window. Widgets must indicate whether they will create their own Gdk.Gdk_Window by calling Gtk.Widget.Set_Has_Window. This is usually done in the widget's init function. Note: This function does not add any reference to Window. Since: gtk+ 2.18 "window": a Gdk.Gdk_Window

Grab_Add

procedure Grab_Add 
(Widget: not null access Gtk_Widget_Record);
Makes Widget the current grabbed widget. This means that interaction with other widgets in the same application is blocked and mouse as well as keyboard events are delivered to this widget. If Widget is not sensitive, it is not set as the current grabbed widget and this function does nothing.

Grab_Default

procedure Grab_Default 
(Widget: not null access Gtk_Widget_Record);
Causes Widget to become the default widget. Widget must be able to be a default widget; typically you would ensure this yourself by calling Gtk.Widget.Set_Can_Default with a True value. The default widget is activated when the user presses Enter in a window. Default widgets must be activatable, that is, Gtk.Widget.Activate should affect them. Note that Gtk.GEntry.Gtk_Entry widgets require the "activates-default" property set to True before they activate the default widget when Enter is pressed and the Gtk.GEntry.Gtk_Entry is focused.

Grab_Focus

procedure Grab_Focus 
(Widget: not null access Gtk_Widget_Record);
Causes Widget to have the keyboard focus for the Gtk.Window.Gtk_Window it's inside. Widget must be a focusable widget, such as a Gtk.GEntry.Gtk_Entry; something like Gtk.Frame.Gtk_Frame won't work. More precisely, it must have the GTK_CAN_FOCUS flag set. Use Gtk.Widget.Set_Can_Focus to modify that flag. The widget also needs to be realized and mapped. This is indicated by the related signals. Grabbing the focus immediately after creating the widget will likely fail and cause critical warnings.

Grab_Remove

procedure Grab_Remove 
(Widget: not null access Gtk_Widget_Record);
Removes the grab from the given widget. You have to pair calls to Gtk.Widget.Grab_Add and Gtk.Widget.Grab_Remove. If Widget does not have the grab, this function does nothing.

Has_Default

function Has_Default 
(Widget: not null access Gtk_Widget_Record) return Boolean;
Determines whether Widget is the current default widget within its toplevel. See Gtk.Widget.Set_Can_Default. Since: gtk+ 2.18

Has_Focus

function Has_Focus 
(Widget: not null access Gtk_Widget_Record) return Boolean;
Determines if the widget has the global input focus. See Gtk.Widget.Is_Focus for the difference between having the global input focus, and only having the focus within a toplevel. Since: gtk+ 2.18

Has_Grab

function Has_Grab 
(Widget: not null access Gtk_Widget_Record) return Boolean;
Determines whether the widget is currently grabbing events, so it is the only widget receiving input events (keyboard and mouse). See also Gtk.Widget.Grab_Add. Since: gtk+ 2.18

Has_Rc_Style

function Has_Rc_Style 
(Widget: not null access Gtk_Widget_Record) return Boolean;

Has_Screen

function Has_Screen 
(Widget: not null access Gtk_Widget_Record) return Boolean;
Checks whether there is a Gdk.Screen.Gdk_Screen is associated with this widget. All toplevel widgets have an associated screen, and all widgets added into a hierarchy with a toplevel window at the top. Since: gtk+ 2.2

Has_Visible_Focus

function Has_Visible_Focus 
(Widget: not null access Gtk_Widget_Record) return Boolean;
Determines if the widget should show a visible indication that it has the global input focus. This is a convenience function for use in ::draw handlers that takes into account whether focus indication should currently be shown in the toplevel window of Widget. See Gtk.Window.Get_Focus_Visible for more information about focus indication. To find out if the widget has the global input focus, use Gtk.Widget.Has_Focus. Since: gtk+ 3.2

Hide

procedure Hide 
(Widget: not null access Gtk_Widget_Record);
Reverses the effects of Gtk.Widget.Show, causing the widget to be hidden (invisible to the user).

Hide_On_Delete

function Hide_On_Delete 
(Widget: not null access Gtk_Widget_Record) return Boolean;
Utility function; intended to be connected to the Gtk.Widget.Gtk_Widget::delete-event signal on a Gtk.Window.Gtk_Window. The function calls Gtk.Widget.Hide on its argument, then returns True. If connected to ::delete-event, the result is that clicking the close button for a window (on the window frame, top right corner usually) will hide but not destroy the window. By default, GTK+ destroys windows when ::delete-event is received.

In_Destruction

function In_Destruction 
(Widget: not null access Gtk_Widget_Record) return Boolean;
Returns whether the widget is currently being destroyed. This information can sometimes be used to avoid doing unnecessary work.

Input_Shape_Combine_Region

procedure Input_Shape_Combine_Region 
(Widget: not null access Gtk_Widget_Record;
Region: Cairo.Region.Cairo_Region);
Sets an input shape for this widget's GDK window. This allows for windows which react to mouse click in a nonrectangular region, see Gdk.Window.Input_Shape_Combine_Region for more information. Since: gtk+ 3.0 "region": shape to be added, or null to remove an existing shape

Intersect

function Intersect 
(Widget: not null access Gtk_Widget_Record;
Area: Gdk.Rectangle.Gdk_Rectangle;
Intersection: access Gdk.Rectangle.Gdk_Rectangle) return Boolean;
Computes the intersection of a Widget's area and Area, storing the intersection in Intersection, and returns True if there was an intersection. Intersection may be null if you're only interested in whether there was an intersection. "area": a rectangle "intersection": rectangle to store intersection of Widget and Area

Is_Ancestor

function Is_Ancestor 
(Widget: not null access Gtk_Widget_Record;
Ancestor: not null access Gtk_Widget_Record'Class) return Boolean;
Determines whether Widget is somewhere inside Ancestor, possibly with intermediate containers. "ancestor": another Gtk.Widget.Gtk_Widget

Is_Composited

function Is_Composited 
(Widget: not null access Gtk_Widget_Record) return Boolean;
Whether Widget can rely on having its alpha channel drawn correctly. On X11 this function returns whether a compositing manager is running for Widget's screen. Please note that the semantics of this call will change in the future if used on a widget that has a composited window in its hierarchy (as set by Gdk.Window.Set_Composited). Since: gtk+ 2.10

Is_Drawable

function Is_Drawable 
(Widget: not null access Gtk_Widget_Record) return Boolean;
Determines whether Widget can be drawn to. A widget can be drawn to if it is mapped and visible. Since: gtk+ 2.18

Is_Focus

function Is_Focus 
(Widget: not null access Gtk_Widget_Record) return Boolean;
Determines if the widget is the focus widget within its toplevel. (This does not mean that the HAS_FOCUS flag is necessarily set; HAS_FOCUS will only be set if the toplevel widget additionally has the global input focus.)

Is_Sensitive

function Is_Sensitive 
(Widget: not null access Gtk_Widget_Record) return Boolean;
Returns the widget's effective sensitivity, which means it is sensitive itself and also its parent widget is sensitive Since: gtk+ 2.18

Is_Toplevel

function Is_Toplevel 
(Widget: not null access Gtk_Widget_Record) return Boolean;
Determines whether Widget is a toplevel widget. Currently only Gtk.Window.Gtk_Window and Gtk.Invisible.Gtk_Invisible (and out-of-process Gtk_Plugs) are toplevel widgets. Toplevel widgets have no parent widget. Since: gtk+ 2.18

Is_Visible

function Is_Visible 
(Widget: not null access Gtk_Widget_Record) return Boolean;
Determines whether the widget and all its parents are marked as visible. This function does not check if the widget is obscured in any way. See also Gtk.Widget.Get_Visible and Gtk.Widget.Set_Visible Since: gtk+ 3.8

Keynav_Failed

function Keynav_Failed 
(Widget: not null access Gtk_Widget_Record;
Direction: Gtk.Enums.Gtk_Direction_Type) return Boolean;
This function should be called whenever keyboard navigation within a single widget hits a boundary. The function emits the Gtk.Widget.Gtk_Widget::keynav-failed signal on the widget and its return value should be interpreted in a way similar to the return value of Gtk.Widget.Child_Focus: When True is returned, stay in the widget, the failed keyboard navigation is Ok and/or there is nowhere we can/should move the focus to. When False is returned, the caller should continue with keyboard navigation outside the widget, e.g. by calling Gtk.Widget.Child_Focus on the widget's toplevel. The default ::keynav-failed handler returns True for Gtk.Enums.Dir_Tab_Forward and Gtk.Enums.Dir_Tab_Backward. For the other values of Gtk.Enums.Gtk_Direction_Type, it looks at the Gtk.Settings.Gtk_Settings:gtk-keynav-cursor-only setting and returns False if the setting is True. This way the entire user interface becomes cursor-navigatable on input devices such as mobile phones which only have cursor keys but no tab key. Whenever the default handler returns True, it also calls Gtk.Widget.Error_Bell to notify the user of the failed keyboard navigation. A use case for providing an own implementation of ::keynav-failed (either by connecting to it or by overriding it) would be a row of Gtk.GEntry.Gtk_Entry widgets where the user should be able to navigate the entire row with the cursor keys, as e.g. known from user interfaces that require entering license keys. Since: gtk+ 2.12 "direction": direction of focus movement

List_Mnemonic_Labels

function List_Mnemonic_Labels 
(Widget: not null access Gtk_Widget_Record) return Widget_List.Glist;
Returns a newly allocated list of the widgets, normally labels, for which this widget is the target of a mnemonic (see for example, Gtk.Label.Set_Mnemonic_Widget). The widgets in the list are not individually referenced. If you want to iterate through the list and perform actions involving callbacks that might destroy the widgets, you *must* call 'g_list_foreach (result, (GFunc)g_object_ref, NULL)' first, and then unref all the widgets afterwards. Since: gtk+ 2.4

Map

procedure Map 
(Widget: not null access Gtk_Widget_Record);
This function is only for use in widget implementations. Causes a widget to be mapped if it isn't already.

Mnemonic_Activate

function Mnemonic_Activate 
(Widget: not null access Gtk_Widget_Record;
Group_Cycling: Boolean) return Boolean;
Emits the Gtk.Widget.Gtk_Widget::mnemonic-activate signal. The default handler for this signal activates the Widget if Group_Cycling is False, and just grabs the focus if Group_Cycling is True. "group_cycling": True if there are other widgets with the same mnemonic

Modify_Base

procedure Modify_Base 
(Widget: not null access Gtk_Widget_Record;
State: Gtk.Enums.Gtk_State_Type;
Color: Gdk.Color.Gdk_Color);

Modify_Bg

procedure Modify_Bg 
(Widget: not null access Gtk_Widget_Record;
State: Gtk.Enums.Gtk_State_Type;
Color: Gdk.Color.Gdk_Color);

Modify_Cursor

procedure Modify_Cursor 
(Widget: not null access Gtk_Widget_Record;
Primary: Gdk.Color.Gdk_Color;
Secondary: Gdk.Color.Gdk_Color);

Modify_Fg

procedure Modify_Fg 
(Widget: not null access Gtk_Widget_Record;
State: Gtk.Enums.Gtk_State_Type;
Color: Gdk.Color.Gdk_Color);

Modify_Font

procedure Modify_Font 
(Widget: not null access Gtk_Widget_Record;
Font_Desc: Pango.Font.Pango_Font_Description);

Modify_Text

procedure Modify_Text 
(Widget: not null access Gtk_Widget_Record;
State: Gtk.Enums.Gtk_State_Type;
Color: Gdk.Color.Gdk_Color);

Override_Background_Color

procedure Override_Background_Color 
(Widget: not null access Gtk_Widget_Record;
State: Gtk.Enums.Gtk_State_Flags;
Color: Gdk.RGBA.Gdk_RGBA);
Sets the background color to use for a widget. All other style values are left untouched. See Gtk.Widget.Override_Color. Since: gtk+ 3.0 "state": the state for which to set the background color "color": the color to assign, or null to undo the effect of previous calls to Gtk.Widget.Override_Background_Color

Override_Color

procedure Override_Color 
(Widget: not null access Gtk_Widget_Record;
State: Gtk.Enums.Gtk_State_Flags;
Color: Gdk.RGBA.Gdk_RGBA);
Sets the color to use for a widget. All other style values are left untouched. Note: This API is mostly meant as a quick way for applications to change a widget appearance. If you are developing a widgets library and intend this change to be themeable, it is better done by setting meaningful CSS classes and regions in your widget/container implementation through Gtk.Style_Context.Add_Class and Gtk.Style_Context.Add_Region. This way, your widget library can install a Gtk.Css_Provider.Gtk_Css_Provider with the GTK_STYLE_PROVIDER_PRIORITY_FALLBACK priority in order to provide a default styling for those widgets that need so, and this theming may fully overridden by the user's theme. Note: Note that for complex widgets this may bring in undesired results (such as uniform background color everywhere), in these cases it is better to fully style such widgets through a Gtk.Css_Provider.Gtk_Css_Provider with the GTK_STYLE_PROVIDER_PRIORITY_APPLICATION priority. Since: gtk+ 3.0 "state": the state for which to set the color "color": the color to assign, or null to undo the effect of previous calls to Gtk.Widget.Override_Color

Override_Cursor

procedure Override_Cursor 
(Widget: not null access Gtk_Widget_Record;
Cursor: Gdk.RGBA.Gdk_RGBA;
Secondary_Cursor: Gdk.RGBA.Gdk_RGBA);
Sets the cursor color to use in a widget, overriding the Gtk.Widget.Gtk_Widget:cursor-color and Gtk.Widget.Gtk_Widget:secondary-cursor-color style properties. All other style values are left untouched. See also gtk_widget_modify_style. Note that the underlying properties have the Gdk.Color.Gdk_Color type, so the alpha value in Primary and Secondary will be ignored. Since: gtk+ 3.0 "cursor": the color to use for primary cursor (does not need to be allocated), or null to undo the effect of previous calls to of Gtk.Widget.Override_Cursor. "secondary_cursor": the color to use for secondary cursor (does not need to be allocated), or null to undo the effect of previous calls to of Gtk.Widget.Override_Cursor.

Override_Font

procedure Override_Font 
(Widget: not null access Gtk_Widget_Record;
Font_Desc: Pango.Font.Pango_Font_Description);
Sets the font to use for a widget. All other style values are left untouched. See Gtk.Widget.Override_Color. Since: gtk+ 3.0 "font_desc": the font descriptiong to use, or null to undo the effect of previous calls to Gtk.Widget.Override_Font

Override_Symbolic_Color

procedure Override_Symbolic_Color 
(Widget: not null access Gtk_Widget_Record;
Name: UTF8_String;
Color: Gdk.RGBA.Gdk_RGBA);
Sets a symbolic color for a widget. All other style values are left untouched. See Gtk.Widget.Override_Color for overriding the foreground or background color. Since: gtk+ 3.0 "name": the name of the symbolic color to modify "color": the color to assign (does not need to be allocated), or null to undo the effect of previous calls to Gtk.Widget.Override_Symbolic_Color

Queue_Compute_Expand

procedure Queue_Compute_Expand 
(Widget: not null access Gtk_Widget_Record);
Mark Widget as needing to recompute its expand flags. Call this function when setting legacy expand child properties on the child of a container. See Gtk.Widget.Compute_Expand.

Queue_Draw

procedure Queue_Draw 
(Widget: not null access Gtk_Widget_Record);
Equivalent to calling Gtk.Widget.Queue_Draw_Area for the entire area of a widget.

Queue_Draw_Area

procedure Queue_Draw_Area 
(Widget: not null access Gtk_Widget_Record;
X: Gint;
Y: Gint;
Width: Gint;
Height: Gint);
Convenience function that calls Gtk.Widget.Queue_Draw_Region on the region created from the given coordinates. The region here is specified in widget coordinates. Widget coordinates are a bit odd; for historical reasons, they are defined as Widget->window coordinates for widgets that are not GTK_NO_WINDOW widgets, and are relative to Widget->allocation.x, Widget->allocation.y for widgets that are GTK_NO_WINDOW widgets. "x": x coordinate of upper-left corner of rectangle to redraw "y": y coordinate of upper-left corner of rectangle to redraw "width": width of region to draw "height": height of region to draw

Queue_Draw_Region

procedure Queue_Draw_Region 
(Widget: not null access Gtk_Widget_Record;
Region: Cairo.Region.Cairo_Region);
Invalidates the rectangular area of Widget defined by Region by calling Gdk.Window.Invalidate_Region on the widget's window and all its child windows. Once the main loop becomes idle (after the current batch of events has been processed, roughly), the window will receive expose events for the union of all regions that have been invalidated. Normally you would only use this function in widget implementations. You might also use it to schedule a redraw of a Gtk.Drawing_Area.Gtk_Drawing_Area or some portion thereof. Since: gtk+ 3.0 "region": region to draw

Queue_Resize

procedure Queue_Resize 
(Widget: not null access Gtk_Widget_Record);
This function is only for use in widget implementations. Flags a widget to have its size renegotiated; should be called when a widget for some reason has a new size request. For example, when you change the text in a Gtk.Label.Gtk_Label, Gtk.Label.Gtk_Label queues a resize to ensure there's enough space for the new text. Note: You cannot call Gtk.Widget.Queue_Resize on a widget from inside its implementation of the GtkWidgetClass::size_allocate virtual method. Calls to Gtk.Widget.Queue_Resize from inside GtkWidgetClass::size_allocate will be silently ignored.

Queue_Resize_No_Redraw

procedure Queue_Resize_No_Redraw 
(Widget: not null access Gtk_Widget_Record);
This function works like Gtk.Widget.Queue_Resize, except that the widget is not invalidated. Since: gtk+ 2.4

Realize

procedure Realize 
(Widget: not null access Gtk_Widget_Record);
Creates the GDK (windowing system) resources associated with a widget. For example, Widget->window will be created when a widget is realized. Normally realization happens implicitly; if you show a widget and all its parent containers, then the widget will be realized and mapped automatically. Realizing a widget requires all the widget's parent widgets to be realized; calling Gtk.Widget.Realize realizes the widget's parents in addition to Widget itself. If a widget is not yet inside a toplevel window when you realize it, bad things will happen. This function is primarily used in widget implementations, and isn't very useful otherwise. Many times when you think you might need it, a better approach is to connect to a signal that will be called after the widget is realized automatically, such as Gtk.Widget.Gtk_Widget::draw. Or simply g_signal_connect () to the Gtk.Widget.Gtk_Widget::realize signal.

Region_Intersect

function Region_Intersect 
(Widget: not null access Gtk_Widget_Record;
Region: Cairo.Region.Cairo_Region) return Cairo.Region.Cairo_Region;
Computes the intersection of a Widget's area and Region, returning the intersection. The result may be empty, use cairo_region_is_empty to check. "region": a cairo_region_t, in the same coordinate system as Widget->allocation. That is, relative to Widget->window for NO_WINDOW widgets; relative to the parent window of Widget->window for widgets with their own window.

Register_Window

procedure Register_Window 
(Widget: not null access Gtk_Widget_Record;
Window: Gdk.Gdk_Window);
Registers a Gdk.Gdk_Window with the widget and sets it up so that the widget recieves events for it. Call Gtk.Widget.Unregister_Window when destroying the window. Before 3.8 you needed to call Gdk.Window.Set_User_Data directly to set this up. This is now deprecated and you should use Gtk.Widget.Register_Window instead. Old code will keep working as is, although some new features like transparency might not work perfectly. Since: gtk+ 3.8 "window": a Gdk.Gdk_Window

Remove_Accelerator

function Remove_Accelerator 
(Widget: not null access Gtk_Widget_Record;
Accel_Group: not null access Gtk.Accel_Group.Gtk_Accel_Group_Record'Class;
Accel_Key: Gdk.Types.Gdk_Key_Type;
Accel_Mods: Gdk.Types.Gdk_Modifier_Type) return Boolean;
Removes an accelerator from Widget, previously installed with Gtk.Widget.Add_Accelerator. "accel_group": accel group for this widget "accel_key": GDK keyval of the accelerator "accel_mods": modifier key combination of the accelerator

Remove_Mnemonic_Label

procedure Remove_Mnemonic_Label 
(Widget: not null access Gtk_Widget_Record;
Label: not null access Gtk_Widget_Record'Class);
Removes a widget from the list of mnemonic labels for this widget. (See Gtk.Widget.List_Mnemonic_Labels). The widget must have previously been added to the list with Gtk.Widget.Add_Mnemonic_Label. Since: gtk+ 2.4 "label": a Gtk.Widget.Gtk_Widget that was previously set as a mnemnic label for Widget with Gtk.Widget.Add_Mnemonic_Label.

Remove_Tick_Callback

procedure Remove_Tick_Callback 
(Widget: not null access Gtk_Widget_Record;
Id: Guint);
Removes a tick callback previously registered with Gtk.Widget.Add_Tick_Callback. Since: gtk+ 3.8 "id": an id returned by Gtk.Widget.Add_Tick_Callback

Render_Icon

function Render_Icon 
(Widget: not null access Gtk_Widget_Record;
Stock_Id: UTF8_String;
Size: Gtk.Enums.Gtk_Icon_Size;
Detail: UTF8_String := "") return Gdk.Pixbuf.Gdk_Pixbuf;

Render_Icon_Pixbuf

function Render_Icon_Pixbuf 
(Widget: not null access Gtk_Widget_Record;
Stock_Id: UTF8_String;
Size: Gtk.Enums.Gtk_Icon_Size) return Gdk.Pixbuf.Gdk_Pixbuf;
A convenience function that uses the theme engine and style settings for Widget to look up Stock_Id and render it to a pixbuf. Stock_Id should be a stock icon ID such as GTK_STOCK_OPEN or GTK_STOCK_OK. Size should be a size such as GTK_ICON_SIZE_MENU. The pixels in the returned Gdk.Pixbuf.Gdk_Pixbuf are shared with the rest of the application and should not be modified. The pixbuf should be freed after use with g_object_unref. Since: gtk+ 3.0 "stock_id": a stock ID "size": a stock size. A size of (GtkIconSize)-1 means render at the size of the source and don't scale (if there are multiple source sizes, GTK+ picks one of the available sizes).

Reparent

procedure Reparent 
(Widget: not null access Gtk_Widget_Record;
New_Parent: not null access Gtk_Widget_Record'Class);
Moves a widget from one Gtk.Container.Gtk_Container to another, handling reference count issues to avoid destroying the widget. "new_parent": a Gtk.Container.Gtk_Container to move the widget into

Reset_Rc_Styles

procedure Reset_Rc_Styles 
(Widget: not null access Gtk_Widget_Record);

Reset_Style

procedure Reset_Style 
(Widget: not null access Gtk_Widget_Record);
Updates the style context of Widget and all descendents by updating its widget path. Gtk.Container.Gtk_Container<!-- -->s may want to use this on a child when reordering it in a way that a different style might apply to it. See also Gtk.Container.Get_Path_For_Child. Since: gtk+ 3.0

Send_Expose

function Send_Expose 
(Widget: not null access Gtk_Widget_Record;
Event: Gdk.Event.Gdk_Event) return Gint;
Very rarely-used function. This function is used to emit an expose event on a widget. This function is not normally used directly. The only time it is used is when propagating an expose event to a child NO_WINDOW widget, and that is normally done using Gtk.Container.Propagate_Draw. If you want to force an area of a window to be redrawn, use Gdk.Window.Invalidate_Rect or Gdk.Window.Invalidate_Region. To cause the redraw to be done immediately, follow that call with a call to Gdk.Window.Process_Updates. "event": a expose Gdk.Event.Gdk_Event

Send_Focus_Change

function Send_Focus_Change 
(Widget: not null access Gtk_Widget_Record;
Event: Gdk.Event.Gdk_Event) return Boolean;
Sends the focus change Event to Widget This function is not meant to be used by applications. The only time it should be used is when it is necessary for a Gtk.Widget.Gtk_Widget to assign focus to a widget that is semantically owned by the first widget even though it's not a direct child - for instance, a search entry in a floating window similar to the quick search in Gtk.Tree_View.Gtk_Tree_View. An example of its usage is: |[ GdkEvent *fevent = gdk_event_new (GDK_FOCUS_CHANGE); fevent->focus_change.type = GDK_FOCUS_CHANGE; fevent->focus_change.in = TRUE; fevent->focus_change.window = gtk_widget_get_window (widget); if (fevent->focus_change.window != NULL) g_object_ref (fevent->focus_change.window); gtk_widget_send_focus_change (widget, fevent); gdk_event_free (event); ]| Since: gtk+ 2.20 "event": a Gdk.Event.Gdk_Event of type GDK_FOCUS_CHANGE

Set_Accel_Path

procedure Set_Accel_Path 
(Widget: not null access Gtk_Widget_Record;
Accel_Path: UTF8_String := "";
Accel_Group: access Gtk.Accel_Group.Gtk_Accel_Group_Record'Class);
Given an accelerator group, Accel_Group, and an accelerator path, Accel_Path, sets up an accelerator in Accel_Group so whenever the key binding that is defined for Accel_Path is pressed, Widget will be activated. This removes any accelerators (for any accelerator group) installed by previous calls to Gtk.Widget.Set_Accel_Path. Associating accelerators with paths allows them to be modified by the user and the modifications to be saved for future use. (See Gtk.Accel_Map.Save.) This function is a low level function that would most likely be used by a menu creation system like Gtk.UI_Manager.Gtk_UI_Manager. If you use Gtk.UI_Manager.Gtk_UI_Manager, setting up accelerator paths will be done automatically. Even when you you aren't using Gtk.UI_Manager.Gtk_UI_Manager, if you only want to set up accelerators on menu items Gtk.Menu_Item.Set_Accel_Path provides a somewhat more convenient interface. Note that Accel_Path string will be stored in a Glib.GQuark. Therefore, if you pass a static string, you can save some memory by interning it first with g_intern_static_string. "accel_path": path used to look up the accelerator "accel_group": a Gtk.Accel_Group.Gtk_Accel_Group.

Set_Redraw_On_Allocate

procedure Set_Redraw_On_Allocate 
(Widget: not null access Gtk_Widget_Record;
Redraw_On_Allocate: Boolean);
Sets whether the entire widget is queued for drawing when its size allocation changes. By default, this setting is True and the entire widget is redrawn on every size change. If your widget leaves the upper left unchanged when made bigger, turning this setting off will improve performance. Note that for NO_WINDOW widgets setting this flag to False turns off all allocation on resizing: the widget will not even redraw if its position changes; this is to allow containers that don't draw anything to avoid excess invalidations. If you set this flag on a NO_WINDOW widget that *does* draw on Widget->window, you are responsible for invalidating both the old and new allocation of the widget when the widget is moved and responsible for invalidating regions newly when the widget increases size. "redraw_on_allocate": if True, the entire widget will be redrawn when it is allocated to a new size. Otherwise, only the new portion of the widget will be redrawn.

Shape_Combine_Region

procedure Shape_Combine_Region 
(Widget: not null access Gtk_Widget_Record;
Region: Cairo.Region.Cairo_Region);
Sets a shape for this widget's GDK window. This allows for transparent windows etc., see Gdk.Window.Shape_Combine_Region for more information. Since: gtk+ 3.0 "region": shape to be added, or null to remove an existing shape

Show

procedure Show 
(Widget: not null access Gtk_Widget_Record);
Flags a widget to be displayed. Any widget that isn't shown will not appear on the screen. If you want to show all the widgets in a container, it's easier to call Gtk.Widget.Show_All on the container, instead of individually showing the widgets. Remember that you have to show the containers containing a widget, in addition to the widget itself, before it will appear onscreen. When a toplevel container is shown, it is immediately realized and mapped; other shown widgets are realized and mapped when their toplevel container is realized and mapped.

Show_All

procedure Show_All 
(Widget: not null access Gtk_Widget_Record);
Recursively shows a widget, and any child widgets (if the widget is a container).

Show_Now

procedure Show_Now 
(Widget: not null access Gtk_Widget_Record);
Shows a widget. If the widget is an unmapped toplevel widget (i.e. a Gtk.Window.Gtk_Window that has not yet been shown), enter the main loop and wait for the window to actually be mapped. Be careful; because the main loop is running, anything can happen during this function.

Size_Allocate

procedure Size_Allocate 
(Widget: not null access Gtk_Widget_Record;
Allocation: Gtk_Allocation);
This function is only used by Gtk.Container.Gtk_Container subclasses, to assign a size and position to their child widgets. In this function, the allocation may be adjusted. It will be forced to a 1x1 minimum size, and the adjust_size_allocation virtual method on the child will be used to adjust the allocation. Standard adjustments include removing the widget's margins, and applying the widget's Gtk.Widget.Gtk_Widget:halign and Gtk.Widget.Gtk_Widget:valign properties. "allocation": position and size to be allocated to Widget

Style_Attach

procedure Style_Attach 
(Widget: not null access Gtk_Widget_Record);

Style_Get_Property

procedure Style_Get_Property 
(Widget: not null access Gtk_Widget_Record;
Property_Name: UTF8_String;
Value: in out Glib.Values.GValue);
Gets the value of a style property of Widget. "property_name": the name of a style property "value": location to return the property value

Thaw_Child_Notify

procedure Thaw_Child_Notify 
(Widget: not null access Gtk_Widget_Record);
Reverts the effect of a previous call to Gtk.Widget.Freeze_Child_Notify. This causes all queued Gtk.Widget.Gtk_Widget::child-notify signals on Widget to be emitted.

Translate_Coordinates

procedure Translate_Coordinates 
(Widget: not null access Gtk_Widget_Record;
Dest_Widget: not null access Gtk_Widget_Record'Class;
Src_X: Gint;
Src_Y: Gint;
Dest_X: out Gint;
Dest_Y: out Gint;
Result: out Boolean);
Translate coordinates relative to Src_Widget's allocation to coordinates relative to Dest_Widget's allocations. In order to perform this operation, both widgets must be realized, and must share a common toplevel. "dest_widget": a Gtk.Widget.Gtk_Widget "src_x": X position relative to Src_Widget "src_y": Y position relative to Src_Widget "dest_x": location to store X position relative to Dest_Widget "dest_y": location to store Y position relative to Dest_Widget

Trigger_Tooltip_Query

procedure Trigger_Tooltip_Query 
(Widget: not null access Gtk_Widget_Record);
Triggers a tooltip query on the display where the toplevel of Widget is located. See Gtk.Tooltip.Trigger_Tooltip_Query for more information. Since: gtk+ 2.12

Unmap

procedure Unmap 
(Widget: not null access Gtk_Widget_Record);
This function is only for use in widget implementations. Causes a widget to be unmapped if it's currently mapped.

Unparent

procedure Unparent 
(Widget: not null access Gtk_Widget_Record);
This function is only for use in widget implementations. Should be called by implementations of the remove method on Gtk.Container.Gtk_Container, to dissociate a child from the container.

Unrealize

procedure Unrealize 
(Widget: not null access Gtk_Widget_Record);
This function is only useful in widget implementations. Causes a widget to be unrealized (frees all GDK resources associated with the widget, such as Widget->window).

Unregister_Window

procedure Unregister_Window 
(Widget: not null access Gtk_Widget_Record;
Window: Gdk.Gdk_Window);
Unregisters a Gdk.Gdk_Window from the widget that was previously set up with Gtk.Widget.Register_Window. You need to call this when the window is no longer used by the widget, such as when you destroy it. Since: gtk+ 3.8 "window": a Gdk.Gdk_Window

Unset_State_Flags

procedure Unset_State_Flags 
(Widget: not null access Gtk_Widget_Record;
Flags: Gtk.Enums.Gtk_State_Flags);
This function is for use in widget implementations. Turns off flag values for the current widget state (insensitive, prelighted, etc.). See Gtk.Widget.Set_State_Flags. Since: gtk+ 3.0 "flags": State flags to turn off

Find_Style_Property

function Find_Style_Property 
(Self: GObject_Class;
Property_Name: UTF8_String) return Glib.Param_Spec;
Finds a style property of a widget class by name. Since: gtk+ 2.2 "property_name": the name of the style property to find

Install_Style_Property

procedure Install_Style_Property 
(Self: GObject_Class;
Pspec: Glib.Param_Spec);

Get_Requisition

function Get_Requisition 
(Value: Glib.Values.GValue) return Gtk_Requisition_Access;

Get_Allocation

function Get_Allocation 
(Value: Glib.Values.GValue) return Gtk_Allocation_Access;
Convert values received as callback parameters

Set_Default_Size_Allocate_Handler

procedure Set_Default_Size_Allocate_Handler 
(Klass: Glib.Object.Ada_GObject_Class;
Handler: Size_Allocate_Handler);

Set_Default_Get_Preferred_Width_Handler

procedure Set_Default_Get_Preferred_Width_Handler 
(Klass: Glib.Object.Ada_GObject_Class;
Handler: Preferred_Size_Handler);

Set_Default_Get_Preferred_Height_Handler

procedure Set_Default_Get_Preferred_Height_Handler 
(Klass: Glib.Object.Ada_GObject_Class;
Handler: Preferred_Size_Handler);

Inherited_Get_Preferred_Width

procedure Inherited_Get_Preferred_Width 
(Klass: Ada_GObject_Class;
Widget: access Gtk_Widget_Record'Class;
Minimum_Size, Natural_Size: out Glib.Gint);

Inherited_Get_Preferred_Height

procedure Inherited_Get_Preferred_Height 
(Klass: Ada_GObject_Class;
Widget: access Gtk_Widget_Record'Class;
Minimum_Size, Natural_Size: out Glib.Gint);
Call the default implementation

Inherited_Size_Allocate

procedure Inherited_Size_Allocate 
(Klass: Ada_GObject_Class;
Widget: access Gtk_Widget_Record'Class;
Allocation: Gtk_Allocation);
Call the inherited size_allocate. This is useful if you have overloaded it in your own class, but still need to call the standard implementation.

Proxy_Draw (generic)

generic with function Draw 
(W: access Gtk_Widget_Record'Class;
Cr: Cairo.Cairo_Context) return Boolean;
function Proxy_Draw (W: System.Address;
Cr: Cairo.Cairo_Context) return Gboolean;

Set_Default_Draw_Handler

procedure Set_Default_Draw_Handler 
(Klass: Glib.Object.Ada_GObject_Class;
Handler: Draw_Handler);
Override the default drawing function. This in general gives more control than connection to Signal_Draw, however a widget is responsible for drawing its children. Use the generic Proxy_Draw to create a suitable callback.

Inherited_Draw

function Inherited_Draw 
(Klass: Ada_GObject_Class;
Widget: access Gtk_Widget_Record'Class;
Cr: Cairo.Cairo_Context) return Boolean;
Call the inherited draw. This is useful if you have overloaded draw in your own class, but still need to draw the child widgets that do not have their own window (the others will already get their own "draw" event. See http://developer.gnome.org/gtk3/3.0/chap-drawing-model.html for an explanation of the gtk+ drawing model.

Get_Default_Direction

function Get_Default_Direction return Gtk.Enums.Gtk_Text_Direction;
Obtains the current default reading direction. See Gtk.Widget.Set_Default_Direction.

Set_Default_Direction

procedure Set_Default_Direction 
(Dir: Gtk.Enums.Gtk_Text_Direction);
Sets the default reading direction for widgets where the direction has not been explicitly set by Gtk.Widget.Set_Direction. "dir": the new default direction. This cannot be Gtk.Enums.Text_Dir_None.

Get_Default_Style

function Get_Default_Style return Gtk.Style.Gtk_Style;

Pop_Composite_Child

procedure Pop_Composite_Child;
Cancels the effect of a previous call to Gtk.Widget.Push_Composite_Child.

Push_Composite_Child

procedure Push_Composite_Child;
Makes all newly-created widgets as composite children until the corresponding Gtk.Widget.Pop_Composite_Child call. A composite child is a child that's an implementation detail of the container it's inside and should not be visible to people using the container. Composite children aren't treated differently by GTK (but see Gtk.Container.Foreach vs. Gtk.Container.Forall), but e.g. GUI builders might want to treat them in a different way. Here is a simple example: |[ gtk_widget_push_composite_child (); scrolled_window->hscrollbar = gtk_scrollbar_new (GTK_ORIENTATION_HORIZONTAL, hadjustment); gtk_widget_set_composite_name (scrolled_window->hscrollbar, "hscrollbar"); gtk_widget_pop_composite_child (); gtk_widget_set_parent (scrolled_window->hscrollbar, GTK_WIDGET (scrolled_window)); g_object_ref (scrolled_window->hscrollbar); ]|

Transform_To_Window

procedure Transform_To_Window 
(Cr: Cairo.Cairo_Context;
Widget: not null access Gtk_Widget_Record'Class;
Window: Gdk.Gdk_Window);
Transforms the given cairo context Cr that from Widget-relative coordinates to Window-relative coordinates. If the Widget's window is not an ancestor of Window, no modification will be applied. This is the inverse to the transformation GTK applies when preparing an expose event to be emitted with the Gtk.Widget.Gtk_Widget::draw signal. It is intended to help porting multiwindow widgets from GTK+ 2 to the rendering architecture of GTK+ 3. Since: gtk+ 3.0 "cr": the cairo context to transform "widget": the widget the context is currently centered for "window": the window to transform the context to

Should_Draw_Window

function Should_Draw_Window 
(Cr: Cairo.Cairo_Context;
Window: Gdk.Gdk_Window) return Boolean;
This function is supposed to be called in Gtk.Widget.Gtk_Widget::draw implementations for widgets that support multiple windows. Cr must be untransformed from invoking of the draw function. This function will return True if the contents of the given Window are supposed to be drawn and False otherwise. Note that when the drawing was not initiated by the windowing system this function will return True for all windows, so you need to draw the bottommost window first. Also, do not use "else if" statements to check which window should be drawn. Since: gtk+ 3.0 "cr": a cairo context "window": the window to check. Window may not be an input-only window.

On_Accel_Closures_Changed

procedure On_Accel_Closures_Changed 
(Self: not null access Gtk_Widget_Record;
Call: Cb_Gtk_Widget_Void;
After: Boolean := False);

On_Accel_Closures_Changed

procedure On_Accel_Closures_Changed 
(Self: not null access Gtk_Widget_Record;
Call: Cb_GObject_Void;
Slot: not null access Glib.Object.GObject_Record'Class;
After: Boolean := False);

On_Button_Press_Event

procedure On_Button_Press_Event 
(Self: not null access Gtk_Widget_Record;
Call: Cb_Gtk_Widget_Gdk_Event_Button_Boolean;
After: Boolean := False);

On_Button_Press_Event

procedure On_Button_Press_Event 
(Self: not null access Gtk_Widget_Record;
Call: Cb_GObject_Gdk_Event_Button_Boolean;
Slot: not null access Glib.Object.GObject_Record'Class;
After: Boolean := False);
The ::button-press-event signal will be emitted when a button (typically from a mouse) is pressed. To receive this signal, the Gdk.Gdk_Window associated to the widget needs to enable the GDK_BUTTON_PRESS_MASK mask. This signal will be sent to the grab widget if there is one. Callback parameters: -- "event": the Gdk.Event.Gdk_Event_Button which triggered this signal. -- Returns True to stop other handlers from being invoked for the event. False to propagate the event further.

On_Button_Release_Event

procedure On_Button_Release_Event 
(Self: not null access Gtk_Widget_Record;
Call: Cb_Gtk_Widget_Gdk_Event_Button_Boolean;
After: Boolean := False);

On_Button_Release_Event

procedure On_Button_Release_Event 
(Self: not null access Gtk_Widget_Record;
Call: Cb_GObject_Gdk_Event_Button_Boolean;
Slot: not null access Glib.Object.GObject_Record'Class;
After: Boolean := False);
The ::button-release-event signal will be emitted when a button (typically from a mouse) is released. To receive this signal, the Gdk.Gdk_Window associated to the widget needs to enable the GDK_BUTTON_RELEASE_MASK mask. This signal will be sent to the grab widget if there is one. Callback parameters: -- "event": the Gdk.Event.Gdk_Event_Button which triggered this signal. -- Returns True to stop other handlers from being invoked for the event. False to propagate the event further.

On_Can_Activate_Accel

procedure On_Can_Activate_Accel 
(Self: not null access Gtk_Widget_Record;
Call: Cb_Gtk_Widget_Guint_Boolean;
After: Boolean := False);

On_Can_Activate_Accel

procedure On_Can_Activate_Accel 
(Self: not null access Gtk_Widget_Record;
Call: Cb_GObject_Guint_Boolean;
Slot: not null access Glib.Object.GObject_Record'Class;
After: Boolean := False);
Determines whether an accelerator that activates the signal identified by Signal_Id can currently be activated. This signal is present to allow applications and derived widgets to override the default Gtk.Widget.Gtk_Widget handling for determining whether an accelerator can be activated. Callback parameters: -- "signal_id": the ID of a signal installed on Widget -- Returns True if the signal can be activated.

On_Child_Notify

procedure On_Child_Notify 
(Self: not null access Gtk_Widget_Record;
Call: Cb_Gtk_Widget_Param_Spec_Void;
After: Boolean := False);

On_Child_Notify

procedure On_Child_Notify 
(Self: not null access Gtk_Widget_Record;
Call: Cb_GObject_Param_Spec_Void;
Slot: not null access Glib.Object.GObject_Record'Class;
After: Boolean := False);
The ::child-notify signal is emitted for each <link linkend="child-properties">child property</link> that has changed on an object. The signal's detail holds the property name.

On_Composited_Changed

procedure On_Composited_Changed 
(Self: not null access Gtk_Widget_Record;
Call: Cb_Gtk_Widget_Void;
After: Boolean := False);

On_Composited_Changed

procedure On_Composited_Changed 
(Self: not null access Gtk_Widget_Record;
Call: Cb_GObject_Void;
Slot: not null access Glib.Object.GObject_Record'Class;
After: Boolean := False);
The ::composited-changed signal is emitted when the composited status of Widget<!-- -->s screen changes. See Gdk.Screen.Is_Composited.

On_Configure_Event

procedure On_Configure_Event 
(Self: not null access Gtk_Widget_Record;
Call: Cb_Gtk_Widget_Gdk_Event_Configure_Boolean;
After: Boolean := False);

On_Configure_Event

procedure On_Configure_Event 
(Self: not null access Gtk_Widget_Record;
Call: Cb_GObject_Gdk_Event_Configure_Boolean;
Slot: not null access Glib.Object.GObject_Record'Class;
After: Boolean := False);
The ::configure-event signal will be emitted when the size, position or stacking of the Widget's window has changed. To receive this signal, the Gdk.Gdk_Window associated to the widget needs to enable the GDK_STRUCTURE_MASK mask. GDK will enable this mask automatically for all new windows. Callback parameters: -- "event": the Gdk.Event.Gdk_Event_Configure which triggered this signal. -- Returns True to stop other handlers from being invoked for the event. False to propagate the event further.

On_Damage_Event

procedure On_Damage_Event 
(Self: not null access Gtk_Widget_Record;
Call: Cb_Gtk_Widget_Gdk_Event_Expose_Boolean;
After: Boolean := False);

On_Damage_Event

procedure On_Damage_Event 
(Self: not null access Gtk_Widget_Record;
Call: Cb_GObject_Gdk_Event_Expose_Boolean;
Slot: not null access Glib.Object.GObject_Record'Class;
After: Boolean := False);
Emitted when a redirected window belonging to Widget gets drawn into. The region/area members of the event shows what area of the redirected drawable was drawn into. Callback parameters: -- "event": the Gdk.Event.Gdk_Event_Expose event -- Returns True to stop other handlers from being invoked for the event. False to propagate the event further.

On_Delete_Event

procedure On_Delete_Event 
(Self: not null access Gtk_Widget_Record;
Call: Cb_Gtk_Widget_Gdk_Event_Boolean;
After: Boolean := False);

On_Delete_Event

procedure On_Delete_Event 
(Self: not null access Gtk_Widget_Record;
Call: Cb_GObject_Gdk_Event_Boolean;
Slot: not null access Glib.Object.GObject_Record'Class;
After: Boolean := False);
The ::delete-event signal is emitted if a user requests that a toplevel window is closed. The default handler for this signal destroys the window. Connecting Gtk.Widget.Hide_On_Delete to this signal will cause the window to be hidden instead, so that it can later be shown again without reconstructing it. Callback parameters: -- "event": the event which triggered this signal -- Returns True to stop other handlers from being invoked for the event. False to propagate the event further.

On_Destroy

procedure On_Destroy 
(Self: not null access Gtk_Widget_Record;
Call: Cb_Gtk_Widget_Void;
After: Boolean := False);

On_Destroy

procedure On_Destroy 
(Self: not null access Gtk_Widget_Record;
Call: Cb_GObject_Void;
Slot: not null access Glib.Object.GObject_Record'Class;
After: Boolean := False);
Signals that all holders of a reference to the widget should release the reference that they hold. May result in finalization of the widget if all references are released.

On_Destroy_Event

procedure On_Destroy_Event 
(Self: not null access Gtk_Widget_Record;
Call: Cb_Gtk_Widget_Gdk_Event_Boolean;
After: Boolean := False);

On_Destroy_Event

procedure On_Destroy_Event 
(Self: not null access Gtk_Widget_Record;
Call: Cb_GObject_Gdk_Event_Boolean;
Slot: not null access Glib.Object.GObject_Record'Class;
After: Boolean := False);
The ::destroy-event signal is emitted when a Gdk.Gdk_Window is destroyed. You rarely get this signal, because most widgets disconnect themselves from their window before they destroy it, so no widget owns the window at destroy time. To receive this signal, the Gdk.Gdk_Window associated to the widget needs to enable the GDK_STRUCTURE_MASK mask. GDK will enable this mask automatically for all new windows. Callback parameters: -- "event": the event which triggered this signal -- Returns True to stop other handlers from being invoked for the event. False to propagate the event further.

On_Direction_Changed

procedure On_Direction_Changed 
(Self: not null access Gtk_Widget_Record;
Call: Cb_Gtk_Widget_Gtk_Text_Direction_Void;
After: Boolean := False);

On_Direction_Changed

procedure On_Direction_Changed 
(Self: not null access Gtk_Widget_Record;
Call: Cb_GObject_Gtk_Text_Direction_Void;
Slot: not null access Glib.Object.GObject_Record'Class;
After: Boolean := False);
The ::direction-changed signal is emitted when the text direction of a widget changes.

On_Drag_Begin

procedure On_Drag_Begin 
(Self: not null access Gtk_Widget_Record;
Call: Cb_Gtk_Widget_Drag_Context_Void;
After: Boolean := False);

On_Drag_Begin

procedure On_Drag_Begin 
(Self: not null access Gtk_Widget_Record;
Call: Cb_GObject_Drag_Context_Void;
Slot: not null access Glib.Object.GObject_Record'Class;
After: Boolean := False);
The ::drag-begin signal is emitted on the drag source when a drag is started. A typical reason to connect to this signal is to set up a custom drag icon with e.g. Gtk.Widget.Drag_Source_Set_Icon_Pixbuf. Note that some widgets set up a drag icon in the default handler of this signal, so you may have to use g_signal_connect_after to override what the default handler did.

On_Drag_Data_Delete

procedure On_Drag_Data_Delete 
(Self: not null access Gtk_Widget_Record;
Call: Cb_Gtk_Widget_Drag_Context_Void;
After: Boolean := False);

On_Drag_Data_Delete

procedure On_Drag_Data_Delete 
(Self: not null access Gtk_Widget_Record;
Call: Cb_GObject_Drag_Context_Void;
Slot: not null access Glib.Object.GObject_Record'Class;
After: Boolean := False);
The ::drag-data-delete signal is emitted on the drag source when a drag with the action Gdk.Drag_Contexts.Action_Move is successfully completed. The signal handler is responsible for deleting the data that has been dropped. What "delete" means depends on the context of the drag operation.

On_Drag_Data_Get

procedure On_Drag_Data_Get 
(Self: not null access Gtk_Widget_Record;
Call: Cb_Gtk_Widget_Drag_Context_Gtk_Selection_Data_Guint_Guint_Void;
After: Boolean := False);

On_Drag_Data_Get

procedure On_Drag_Data_Get 
(Self: not null access Gtk_Widget_Record;
Call: Cb_GObject_Drag_Context_Gtk_Selection_Data_Guint_Guint_Void;
Slot: not null access Glib.Object.GObject_Record'Class;
After: Boolean := False);
The ::drag-data-get signal is emitted on the drag source when the drop site requests the data which is dragged. It is the responsibility of the signal handler to fill Data with the data in the format which is indicated by Info. See gtk_selection_data_set and Gtk.Selection_Data.Set_Text. Callback parameters: -- "context": the drag context -- "data": the Gtk.Selection_Data.Gtk_Selection_Data to be filled with the -- dragged data -- "info": the info that has been registered with the target in the -- Gtk.Target_List.Gtk_Target_List -- "time": the timestamp at which the data was requested

On_Drag_Data_Received

procedure On_Drag_Data_Received 
(Self: not null access Gtk_Widget_Record;
Call: Cb_Gtk_Widget_Drag_Context_Gint_Gint_Gtk_Selection_Data_Guint_Guint_Void;
After: Boolean := False);

On_Drag_Data_Received

procedure On_Drag_Data_Received 
(Self: not null access Gtk_Widget_Record;
Call: Cb_GObject_Drag_Context_Gint_Gint_Gtk_Selection_Data_Guint_Guint_Void;
Slot: not null access Glib.Object.GObject_Record'Class;
After: Boolean := False);
The ::drag-data-received signal is emitted on the drop site when the dragged data has been received. If the data was received in order to determine whether the drop will be accepted, the handler is expected to call gdk_drag_status and *not* finish the drag. If the data was received in response to a Gtk.Widget.Gtk_Widget::drag-drop signal (and this is the last target to be received), the handler for this signal is expected to process the received data and then call gtk_drag_finish, setting the Success parameter depending on whether the data was processed successfully. The handler may inspect the selected action with Gdk.Drag_Contexts.Get_Selected_Action before calling gtk_drag_finish, e.g. to implement Gdk.Drag_Contexts.Action_Ask as shown in the following example: |[ void drag_data_received (GtkWidget *widget, GdkDragContext *context, gint x, gint y, GtkSelectionData *data, guint info, guint time) { if ((data->length >= 0) && (data->format == 8)) { GdkDragAction action; /* handle data here */ action = gdk_drag_context_get_selected_action (context); if (action == GDK_ACTION_ASK) { GtkWidget *dialog; gint response; dialog = gtk_message_dialog_new (NULL, GTK_DIALOG_MODAL | GTK_DIALOG_DESTROY_WITH_PARENT, GTK_MESSAGE_INFO, GTK_BUTTONS_YES_NO, "Move the data ?\n"); response = gtk_dialog_run (GTK_DIALOG (dialog)); gtk_widget_destroy (dialog); if (response == GTK_RESPONSE_YES) action = GDK_ACTION_MOVE; else action = GDK_ACTION_COPY; } gtk_drag_finish (context, TRUE, action == GDK_ACTION_MOVE, time); } else gtk_drag_finish (context, FALSE, FALSE, time); } ]| Callback parameters: -- "context": the drag context -- "x": where the drop happened -- "y": where the drop happened -- "data": the received data -- "info": the info that has been registered with the target in the -- Gtk.Target_List.Gtk_Target_List -- "time": the timestamp at which the data was received

On_Drag_Drop

procedure On_Drag_Drop 
(Self: not null access Gtk_Widget_Record;
Call: Cb_Gtk_Widget_Drag_Context_Gint_Gint_Guint_Boolean;
After: Boolean := False);

On_Drag_Drop

procedure On_Drag_Drop 
(Self: not null access Gtk_Widget_Record;
Call: Cb_GObject_Drag_Context_Gint_Gint_Guint_Boolean;
Slot: not null access Glib.Object.GObject_Record'Class;
After: Boolean := False);
The ::drag-drop signal is emitted on the drop site when the user drops the data onto the widget. The signal handler must determine whether the cursor position is in a drop zone or not. If it is not in a drop zone, it returns False and no further processing is necessary. Otherwise, the handler returns True. In this case, the handler must ensure that gtk_drag_finish is called to let the source know that the drop is done. The call to gtk_drag_finish can be done either directly or in a Gtk.Widget.Gtk_Widget::drag-data-received handler which gets triggered by calling Gtk.Widget.Drag_Get_Data to receive the data for one or more of the supported targets. Callback parameters: -- "context": the drag context -- "x": the x coordinate of the current cursor position -- "y": the y coordinate of the current cursor position -- "time": the timestamp of the motion event -- Returns whether the cursor position is in a drop zone

On_Drag_End

procedure On_Drag_End 
(Self: not null access Gtk_Widget_Record;
Call: Cb_Gtk_Widget_Drag_Context_Void;
After: Boolean := False);

On_Drag_End

procedure On_Drag_End 
(Self: not null access Gtk_Widget_Record;
Call: Cb_GObject_Drag_Context_Void;
Slot: not null access Glib.Object.GObject_Record'Class;
After: Boolean := False);
The ::drag-end signal is emitted on the drag source when a drag is finished. A typical reason to connect to this signal is to undo things done in Gtk.Widget.Gtk_Widget::drag-begin.

On_Drag_Failed

procedure On_Drag_Failed 
(Self: not null access Gtk_Widget_Record;
Call: Cb_Gtk_Widget_Drag_Context_Gtk_Drag_Result_Boolean;
After: Boolean := False);

On_Drag_Failed

procedure On_Drag_Failed 
(Self: not null access Gtk_Widget_Record;
Call: Cb_GObject_Drag_Context_Gtk_Drag_Result_Boolean;
Slot: not null access Glib.Object.GObject_Record'Class;
After: Boolean := False);
The ::drag-failed signal is emitted on the drag source when a drag has failed. The signal handler may hook custom code to handle a failed DND operation based on the type of error, it returns True is the failure has been already handled (not showing the default "drag operation failed" animation), otherwise it returns False. Callback parameters: -- "context": the drag context -- "result": the result of the drag operation -- Returns True if the failed drag operation has been already handled.

On_Drag_Leave

procedure On_Drag_Leave 
(Self: not null access Gtk_Widget_Record;
Call: Cb_Gtk_Widget_Drag_Context_Guint_Void;
After: Boolean := False);

On_Drag_Leave

procedure On_Drag_Leave 
(Self: not null access Gtk_Widget_Record;
Call: Cb_GObject_Drag_Context_Guint_Void;
Slot: not null access Glib.Object.GObject_Record'Class;
After: Boolean := False);
The ::drag-leave signal is emitted on the drop site when the cursor leaves the widget. A typical reason to connect to this signal is to undo things done in Gtk.Widget.Gtk_Widget::drag-motion, e.g. undo highlighting with Gtk.Widget.Drag_Unhighlight Callback parameters: -- "context": the drag context -- "time": the timestamp of the motion event

On_Drag_Motion

procedure On_Drag_Motion 
(Self: not null access Gtk_Widget_Record;
Call: Cb_Gtk_Widget_Drag_Context_Gint_Gint_Guint_Boolean;
After: Boolean := False);

On_Drag_Motion

procedure On_Drag_Motion 
(Self: not null access Gtk_Widget_Record;
Call: Cb_GObject_Drag_Context_Gint_Gint_Guint_Boolean;
Slot: not null access Glib.Object.GObject_Record'Class;
After: Boolean := False);
The ::drag-motion signal is emitted on the drop site when the user moves the cursor over the widget during a drag. The signal handler must determine whether the cursor position is in a drop zone or not. If it is not in a drop zone, it returns False and no further processing is necessary. Otherwise, the handler returns True. In this case, the handler is responsible for providing the necessary information for displaying feedback to the user, by calling gdk_drag_status. If the decision whether the drop will be accepted or rejected can't be made based solely on the cursor position and the type of the data, the handler may inspect the dragged data by calling Gtk.Widget.Drag_Get_Data and defer the gdk_drag_status call to the Gtk.Widget.Gtk_Widget::drag-data-received handler. Note that you cannot not pass GTK_DEST_DEFAULT_DROP, GTK_DEST_DEFAULT_MOTION or GTK_DEST_DEFAULT_ALL to gtk_drag_dest_set when using the drag-motion signal that way. Also note that there is no drag-enter signal. The drag receiver has to keep track of whether he has received any drag-motion signals since the last Gtk.Widget.Gtk_Widget::drag-leave and if not, treat the drag-motion signal as an "enter" signal. Upon an "enter", the handler will typically highlight the drop site with Gtk.Widget.Drag_Highlight. |[ static void drag_motion (GtkWidget *widget, GdkDragContext *context, gint x, gint y, guint time) { GdkAtom target; PrivateData *private_data = GET_PRIVATE_DATA (widget); if (!private_data->drag_highlight) { private_data->drag_highlight = 1; gtk_drag_highlight (widget); } target = gtk_drag_dest_find_target (widget, context, NULL); if (target == GDK_NONE) gdk_drag_status (context, 0, time); else { private_data->pending_status = gdk_drag_context_get_suggested_action (context); gtk_drag_get_data (widget, context, target, time); } return TRUE; } static void drag_data_received (GtkWidget *widget, GdkDragContext *context, gint x, gint y, GtkSelectionData *selection_data, guint info, guint time) { PrivateData *private_data = GET_PRIVATE_DATA (widget); if (private_data->suggested_action) { private_data->suggested_action = 0; /* We are getting this data due to a request in drag_motion, * rather than due to a request in drag_drop, so we are just * supposed to call gdk_drag_status, not actually paste in * the data. */ str = gtk_selection_data_get_text (selection_data); if (!data_is_acceptable (str)) gdk_drag_status (context, 0, time); else gdk_drag_status (context, private_data->suggested_action, time); } else { /* accept the drop */ } } ]| Callback parameters: -- "context": the drag context -- "x": the x coordinate of the current cursor position -- "y": the y coordinate of the current cursor position -- "time": the timestamp of the motion event -- Returns whether the cursor position is in a drop zone

On_Draw

procedure On_Draw 
(Self: not null access Gtk_Widget_Record;
Call: Cb_Gtk_Widget_Cairo_Context_Boolean;
After: Boolean := False);

On_Draw

procedure On_Draw 
(Self: not null access Gtk_Widget_Record;
Call: Cb_GObject_Cairo_Context_Boolean;
Slot: not null access Glib.Object.GObject_Record'Class;
After: Boolean := False);
This signal is emitted when a widget is supposed to render itself. The Widget's top left corner must be painted at the origin of the passed in context and be sized to the values returned by Gtk.Widget.Get_Allocated_Width and Gtk.Widget.Get_Allocated_Height. Signal handlers connected to this signal can modify the cairo context passed as Cr in any way they like and don't need to restore it. The signal emission takes care of calling cairo_save before and cairo_restore after invoking the handler. The signal handler will get a Cr with a clip region already set to the widget's dirty region, i.e. to the area that needs repainting. Complicated widgets that want to avoid redrawing themselves completely can get the full extents of the clip region with gdk_cairo_get_clip_rectangle, or they can get a finer-grained representation of the dirty region with cairo_copy_clip_rectangle_list. Callback parameters: -- "cr": the cairo context to draw to -- Returns True to stop other handlers from being invoked for the event. % False to propagate the event further.

On_Enter_Notify_Event

procedure On_Enter_Notify_Event 
(Self: not null access Gtk_Widget_Record;
Call: Cb_Gtk_Widget_Gdk_Event_Crossing_Boolean;
After: Boolean := False);

On_Enter_Notify_Event

procedure On_Enter_Notify_Event 
(Self: not null access Gtk_Widget_Record;
Call: Cb_GObject_Gdk_Event_Crossing_Boolean;
Slot: not null access Glib.Object.GObject_Record'Class;
After: Boolean := False);
The ::enter-notify-event will be emitted when the pointer enters the Widget's window. To receive this signal, the Gdk.Gdk_Window associated to the widget needs to enable the GDK_ENTER_NOTIFY_MASK mask. This signal will be sent to the grab widget if there is one. Callback parameters: -- "event": the Gdk.Event.Gdk_Event_Crossing which triggered this signal. -- Returns True to stop other handlers from being invoked for the event. False to propagate the event further.

On_Event

procedure On_Event 
(Self: not null access Gtk_Widget_Record;
Call: Cb_Gtk_Widget_Gdk_Event_Boolean;
After: Boolean := False);

On_Event

procedure On_Event 
(Self: not null access Gtk_Widget_Record;
Call: Cb_GObject_Gdk_Event_Boolean;
Slot: not null access Glib.Object.GObject_Record'Class;
After: Boolean := False);
The GTK+ main loop will emit three signals for each GDK event delivered to a widget: one generic ::event signal, another, more specific, signal that matches the type of event delivered (e.g. Gtk.Widget.Gtk_Widget::key-press-event) and finally a generic Gtk.Widget.Gtk_Widget::event-after signal. Callback parameters: -- "event": the Gdk.Event.Gdk_Event which triggered this signal -- Returns True to stop other handlers from being invoked for the event and to cancel the emission of the second specific ::event signal. False to propagate the event further and to allow the emission of the second signal. The ::event-after signal is emitted regardless of the return value.

On_Event_After

procedure On_Event_After 
(Self: not null access Gtk_Widget_Record;
Call: Cb_Gtk_Widget_Gdk_Event_Void;
After: Boolean := False);

On_Event_After

procedure On_Event_After 
(Self: not null access Gtk_Widget_Record;
Call: Cb_GObject_Gdk_Event_Void;
Slot: not null access Glib.Object.GObject_Record'Class;
After: Boolean := False);
After the emission of the Gtk.Widget.Gtk_Widget::event signal and (optionally) the second more specific signal, ::event-after will be emitted regardless of the previous two signals handlers return values.

On_Focus

procedure On_Focus 
(Self: not null access Gtk_Widget_Record;
Call: Cb_Gtk_Widget_Gtk_Direction_Type_Boolean;
After: Boolean := False);

On_Focus

procedure On_Focus 
(Self: not null access Gtk_Widget_Record;
Call: Cb_GObject_Gtk_Direction_Type_Boolean;
Slot: not null access Glib.Object.GObject_Record'Class;
After: Boolean := False);
Callback parameters: -- Returns True to stop other handlers from being invoked for the event. False to propagate the event further.

On_Focus_In_Event

procedure On_Focus_In_Event 
(Self: not null access Gtk_Widget_Record;
Call: Cb_Gtk_Widget_Gdk_Event_Focus_Boolean;
After: Boolean := False);

On_Focus_In_Event

procedure On_Focus_In_Event 
(Self: not null access Gtk_Widget_Record;
Call: Cb_GObject_Gdk_Event_Focus_Boolean;
Slot: not null access Glib.Object.GObject_Record'Class;
After: Boolean := False);
The ::focus-in-event signal will be emitted when the keyboard focus enters the Widget's window. To receive this signal, the Gdk.Gdk_Window associated to the widget needs to enable the GDK_FOCUS_CHANGE_MASK mask. Callback parameters: -- "event": the Gdk.Event.Gdk_Event_Focus which triggered this signal. -- Returns True to stop other handlers from being invoked for the event. False to propagate the event further.

On_Focus_Out_Event

procedure On_Focus_Out_Event 
(Self: not null access Gtk_Widget_Record;
Call: Cb_Gtk_Widget_Gdk_Event_Focus_Boolean;
After: Boolean := False);

On_Focus_Out_Event

procedure On_Focus_Out_Event 
(Self: not null access Gtk_Widget_Record;
Call: Cb_GObject_Gdk_Event_Focus_Boolean;
Slot: not null access Glib.Object.GObject_Record'Class;
After: Boolean := False);
The ::focus-out-event signal will be emitted when the keyboard focus leaves the Widget's window. To receive this signal, the Gdk.Gdk_Window associated to the widget needs to enable the GDK_FOCUS_CHANGE_MASK mask. Callback parameters: -- "event": the Gdk.Event.Gdk_Event_Focus which triggered this signal. -- Returns True to stop other handlers from being invoked for the event. False to propagate the event further.

On_Grab_Broken_Event

procedure On_Grab_Broken_Event 
(Self: not null access Gtk_Widget_Record;
Call: Cb_Gtk_Widget_Gdk_Event_Grab_Broken_Boolean;
After: Boolean := False);

On_Grab_Broken_Event

procedure On_Grab_Broken_Event 
(Self: not null access Gtk_Widget_Record;
Call: Cb_GObject_Gdk_Event_Grab_Broken_Boolean;
Slot: not null access Glib.Object.GObject_Record'Class;
After: Boolean := False);
Emitted when a pointer or keyboard grab on a window belonging to Widget gets broken. On X11, this happens when the grab window becomes unviewable (i.e. it or one of its ancestors is unmapped), or if the same application grabs the pointer or keyboard again. Callback parameters: -- "event": the Gdk.Event.Gdk_Event_Grab_Broken event -- Returns True to stop other handlers from being invoked for the event. False to propagate the event further.

On_Grab_Focus

procedure On_Grab_Focus 
(Self: not null access Gtk_Widget_Record;
Call: Cb_Gtk_Widget_Void;
After: Boolean := False);

On_Grab_Focus

procedure On_Grab_Focus 
(Self: not null access Gtk_Widget_Record;
Call: Cb_GObject_Void;
Slot: not null access Glib.Object.GObject_Record'Class;
After: Boolean := False);

On_Grab_Notify

procedure On_Grab_Notify 
(Self: not null access Gtk_Widget_Record;
Call: Cb_Gtk_Widget_Boolean_Void;
After: Boolean := False);

On_Grab_Notify

procedure On_Grab_Notify 
(Self: not null access Gtk_Widget_Record;
Call: Cb_GObject_Boolean_Void;
Slot: not null access Glib.Object.GObject_Record'Class;
After: Boolean := False);
The ::grab-notify signal is emitted when a widget becomes shadowed by a GTK+ grab (not a pointer or keyboard grab) on another widget, or when it becomes unshadowed due to a grab being removed. A widget is shadowed by a Gtk.Widget.Grab_Add when the topmost grab widget in the grab stack of its window group is not its ancestor.

On_Hide

procedure On_Hide 
(Self: not null access Gtk_Widget_Record;
Call: Cb_Gtk_Widget_Void;
After: Boolean := False);

On_Hide

procedure On_Hide 
(Self: not null access Gtk_Widget_Record;
Call: Cb_GObject_Void;
Slot: not null access Glib.Object.GObject_Record'Class;
After: Boolean := False);

On_Hierarchy_Changed

procedure On_Hierarchy_Changed 
(Self: not null access Gtk_Widget_Record;
Call: Cb_Gtk_Widget_Gtk_Widget_Void;
After: Boolean := False);

On_Hierarchy_Changed

procedure On_Hierarchy_Changed 
(Self: not null access Gtk_Widget_Record;
Call: Cb_GObject_Gtk_Widget_Void;
Slot: not null access Glib.Object.GObject_Record'Class;
After: Boolean := False);
The ::hierarchy-changed signal is emitted when the anchored state of a widget changes. A widget is 'anchored' when its toplevel ancestor is a Gtk.Window.Gtk_Window. This signal is emitted when a widget changes from un-anchored to anchored or vice-versa.

On_Key_Press_Event

procedure On_Key_Press_Event 
(Self: not null access Gtk_Widget_Record;
Call: Cb_Gtk_Widget_Gdk_Event_Key_Boolean;
After: Boolean := False);

On_Key_Press_Event

procedure On_Key_Press_Event 
(Self: not null access Gtk_Widget_Record;
Call: Cb_GObject_Gdk_Event_Key_Boolean;
Slot: not null access Glib.Object.GObject_Record'Class;
After: Boolean := False);
The ::key-press-event signal is emitted when a key is pressed. The signal emission will reoccur at the key-repeat rate when the key is kept pressed. To receive this signal, the Gdk.Gdk_Window associated to the widget needs to enable the GDK_KEY_PRESS_MASK mask. This signal will be sent to the grab widget if there is one. Callback parameters: -- "event": the Gdk.Event.Gdk_Event_Key which triggered this signal. -- Returns True to stop other handlers from being invoked for the event. False to propagate the event further.

On_Key_Release_Event

procedure On_Key_Release_Event 
(Self: not null access Gtk_Widget_Record;
Call: Cb_Gtk_Widget_Gdk_Event_Key_Boolean;
After: Boolean := False);

On_Key_Release_Event

procedure On_Key_Release_Event 
(Self: not null access Gtk_Widget_Record;
Call: Cb_GObject_Gdk_Event_Key_Boolean;
Slot: not null access Glib.Object.GObject_Record'Class;
After: Boolean := False);
The ::key-release-event signal is emitted when a key is released. To receive this signal, the Gdk.Gdk_Window associated to the widget needs to enable the GDK_KEY_RELEASE_MASK mask. This signal will be sent to the grab widget if there is one. Callback parameters: -- "event": the Gdk.Event.Gdk_Event_Key which triggered this signal. -- Returns True to stop other handlers from being invoked for the event. False to propagate the event further.

On_Keynav_Failed

procedure On_Keynav_Failed 
(Self: not null access Gtk_Widget_Record;
Call: Cb_Gtk_Widget_Gtk_Direction_Type_Boolean;
After: Boolean := False);

On_Keynav_Failed

procedure On_Keynav_Failed 
(Self: not null access Gtk_Widget_Record;
Call: Cb_GObject_Gtk_Direction_Type_Boolean;
Slot: not null access Glib.Object.GObject_Record'Class;
After: Boolean := False);
Gets emitted if keyboard navigation fails. See Gtk.Widget.Keynav_Failed for details. Callback parameters: -- "direction": the direction of movement -- Returns True if stopping keyboard navigation is fine, False if the emitting widget should try to handle the keyboard navigation attempt in its parent container(s).

On_Leave_Notify_Event

procedure On_Leave_Notify_Event 
(Self: not null access Gtk_Widget_Record;
Call: Cb_Gtk_Widget_Gdk_Event_Crossing_Boolean;
After: Boolean := False);

On_Leave_Notify_Event

procedure On_Leave_Notify_Event 
(Self: not null access Gtk_Widget_Record;
Call: Cb_GObject_Gdk_Event_Crossing_Boolean;
Slot: not null access Glib.Object.GObject_Record'Class;
After: Boolean := False);
The ::leave-notify-event will be emitted when the pointer leaves the Widget's window. To receive this signal, the Gdk.Gdk_Window associated to the widget needs to enable the GDK_LEAVE_NOTIFY_MASK mask. This signal will be sent to the grab widget if there is one. Callback parameters: -- "event": the Gdk.Event.Gdk_Event_Crossing which triggered this signal. -- Returns True to stop other handlers from being invoked for the event. False to propagate the event further.

On_Map

procedure On_Map 
(Self: not null access Gtk_Widget_Record;
Call: Cb_Gtk_Widget_Void;
After: Boolean := False);

On_Map

procedure On_Map 
(Self: not null access Gtk_Widget_Record;
Call: Cb_GObject_Void;
Slot: not null access Glib.Object.GObject_Record'Class;
After: Boolean := False);

On_Map_Event

procedure On_Map_Event 
(Self: not null access Gtk_Widget_Record;
Call: Cb_Gtk_Widget_Gdk_Event_Any_Boolean;
After: Boolean := False);

On_Map_Event

procedure On_Map_Event 
(Self: not null access Gtk_Widget_Record;
Call: Cb_GObject_Gdk_Event_Any_Boolean;
Slot: not null access Glib.Object.GObject_Record'Class;
After: Boolean := False);
The ::map-event signal will be emitted when the Widget's window is mapped. A window is mapped when it becomes visible on the screen. To receive this signal, the Gdk.Gdk_Window associated to the widget needs to enable the GDK_STRUCTURE_MASK mask. GDK will enable this mask automatically for all new windows. Callback parameters: -- "event": the Gdk.Event.Gdk_Event_Any which triggered this signal. -- Returns True to stop other handlers from being invoked for the event. False to propagate the event further.

On_Mnemonic_Activate

procedure On_Mnemonic_Activate 
(Self: not null access Gtk_Widget_Record;
Call: Cb_Gtk_Widget_Boolean_Boolean;
After: Boolean := False);

On_Mnemonic_Activate

procedure On_Mnemonic_Activate 
(Self: not null access Gtk_Widget_Record;
Call: Cb_GObject_Boolean_Boolean;
Slot: not null access Glib.Object.GObject_Record'Class;
After: Boolean := False);
Callback parameters: -- Returns True to stop other handlers from being invoked for the event. False to propagate the event further.

On_Motion_Notify_Event

procedure On_Motion_Notify_Event 
(Self: not null access Gtk_Widget_Record;
Call: Cb_Gtk_Widget_Gdk_Event_Motion_Boolean;
After: Boolean := False);

On_Motion_Notify_Event

procedure On_Motion_Notify_Event 
(Self: not null access Gtk_Widget_Record;
Call: Cb_GObject_Gdk_Event_Motion_Boolean;
Slot: not null access Glib.Object.GObject_Record'Class;
After: Boolean := False);
The ::motion-notify-event signal is emitted when the pointer moves over the widget's Gdk.Gdk_Window. To receive this signal, the Gdk.Gdk_Window associated to the widget needs to enable the GDK_POINTER_MOTION_MASK mask. This signal will be sent to the grab widget if there is one. Callback parameters: -- "event": the Gdk.Event.Gdk_Event_Motion which triggered this signal. -- Returns True to stop other handlers from being invoked for the event. False to propagate the event further.

On_Move_Focus

procedure On_Move_Focus 
(Self: not null access Gtk_Widget_Record;
Call: Cb_Gtk_Widget_Gtk_Direction_Type_Void;
After: Boolean := False);

On_Move_Focus

procedure On_Move_Focus 
(Self: not null access Gtk_Widget_Record;
Call: Cb_GObject_Gtk_Direction_Type_Void;
Slot: not null access Glib.Object.GObject_Record'Class;
After: Boolean := False);

On_Parent_Set

procedure On_Parent_Set 
(Self: not null access Gtk_Widget_Record;
Call: Cb_Gtk_Widget_Gtk_Widget_Void;
After: Boolean := False);

On_Parent_Set

procedure On_Parent_Set 
(Self: not null access Gtk_Widget_Record;
Call: Cb_GObject_Gtk_Widget_Void;
Slot: not null access Glib.Object.GObject_Record'Class;
After: Boolean := False);
The ::parent-set signal is emitted when a new parent has been set on a widget.

On_Popup_Menu

procedure On_Popup_Menu 
(Self: not null access Gtk_Widget_Record;
Call: Cb_Gtk_Widget_Boolean;
After: Boolean := False);

On_Popup_Menu

procedure On_Popup_Menu 
(Self: not null access Gtk_Widget_Record;
Call: Cb_GObject_Boolean;
Slot: not null access Glib.Object.GObject_Record'Class;
After: Boolean := False);
This signal gets emitted whenever a widget should pop up a context menu. This usually happens through the standard key binding mechanism; by pressing a certain key while a widget is focused, the user can cause the widget to pop up a menu. For example, the Gtk.GEntry.Gtk_Entry widget creates a menu with clipboard commands. See <xref linkend="checklist-popup-menu"/> for an example of how to use this signal. Callback parameters: -- Returns True if a menu was activated

On_Property_Notify_Event

procedure On_Property_Notify_Event 
(Self: not null access Gtk_Widget_Record;
Call: Cb_Gtk_Widget_Gdk_Event_Property_Boolean;
After: Boolean := False);

On_Property_Notify_Event

procedure On_Property_Notify_Event 
(Self: not null access Gtk_Widget_Record;
Call: Cb_GObject_Gdk_Event_Property_Boolean;
Slot: not null access Glib.Object.GObject_Record'Class;
After: Boolean := False);
The ::property-notify-event signal will be emitted when a property on the Widget's window has been changed or deleted. To receive this signal, the Gdk.Gdk_Window associated to the widget needs to enable the GDK_PROPERTY_CHANGE_MASK mask. Callback parameters: -- "event": the Gdk.Event.Gdk_Event_Property which triggered this signal. -- Returns True to stop other handlers from being invoked for the event. False to propagate the event further.

On_Proximity_In_Event

procedure On_Proximity_In_Event 
(Self: not null access Gtk_Widget_Record;
Call: Cb_Gtk_Widget_Gdk_Event_Proximity_Boolean;
After: Boolean := False);

On_Proximity_In_Event

procedure On_Proximity_In_Event 
(Self: not null access Gtk_Widget_Record;
Call: Cb_GObject_Gdk_Event_Proximity_Boolean;
Slot: not null access Glib.Object.GObject_Record'Class;
After: Boolean := False);
To receive this signal the Gdk.Gdk_Window associated to the widget needs to enable the GDK_PROXIMITY_IN_MASK mask. This signal will be sent to the grab widget if there is one. Callback parameters: -- "event": the Gdk.Event.Gdk_Event_Proximity which triggered this signal. -- Returns True to stop other handlers from being invoked for the event. False to propagate the event further.

On_Proximity_Out_Event

procedure On_Proximity_Out_Event 
(Self: not null access Gtk_Widget_Record;
Call: Cb_Gtk_Widget_Gdk_Event_Proximity_Boolean;
After: Boolean := False);

On_Proximity_Out_Event

procedure On_Proximity_Out_Event 
(Self: not null access Gtk_Widget_Record;
Call: Cb_GObject_Gdk_Event_Proximity_Boolean;
Slot: not null access Glib.Object.GObject_Record'Class;
After: Boolean := False);
To receive this signal the Gdk.Gdk_Window associated to the widget needs to enable the GDK_PROXIMITY_OUT_MASK mask. This signal will be sent to the grab widget if there is one. Callback parameters: -- "event": the Gdk.Event.Gdk_Event_Proximity which triggered this signal. -- Returns True to stop other handlers from being invoked for the event. False to propagate the event further.

On_Query_Tooltip

procedure On_Query_Tooltip 
(Self: not null access Gtk_Widget_Record;
Call: Cb_Gtk_Widget_Gint_Gint_Boolean_GObject_Boolean;
After: Boolean := False);

On_Query_Tooltip

procedure On_Query_Tooltip 
(Self: not null access Gtk_Widget_Record;
Call: Cb_GObject_Gint_Gint_Boolean_GObject_Boolean;
Slot: not null access Glib.Object.GObject_Record'Class;
After: Boolean := False);
Emitted when Gtk.Widget.Gtk_Widget:has-tooltip is True and the Gtk.Settings.Gtk_Settings:gtk-tooltip-timeout has expired with the cursor hovering "above" Widget; or emitted when Widget got focus in keyboard mode. Using the given coordinates, the signal handler should determine whether a tooltip should be shown for Widget. If this is the case True should be returned, False otherwise. Note that if Keyboard_Mode is True, the values of X and Y are undefined and should not be used. The signal handler is free to manipulate Tooltip with the therefore destined function calls. Callback parameters: -- "x": the x coordinate of the cursor position where the request has been -- emitted, relative to Widget's left side -- "y": the y coordinate of the cursor position where the request has been -- emitted, relative to Widget's top -- "keyboard_mode": True if the tooltip was trigged using the keyboard -- "tooltip": a Gtk.Tooltip.Gtk_Tooltip -- Returns True if Tooltip should be shown right now, False otherwise.

On_Realize

procedure On_Realize 
(Self: not null access Gtk_Widget_Record;
Call: Cb_Gtk_Widget_Void;
After: Boolean := False);

On_Realize

procedure On_Realize 
(Self: not null access Gtk_Widget_Record;
Call: Cb_GObject_Void;
Slot: not null access Glib.Object.GObject_Record'Class;
After: Boolean := False);

On_Screen_Changed

procedure On_Screen_Changed 
(Self: not null access Gtk_Widget_Record;
Call: Cb_Gtk_Widget_Gdk_Screen_Void;
After: Boolean := False);

On_Screen_Changed

procedure On_Screen_Changed 
(Self: not null access Gtk_Widget_Record;
Call: Cb_GObject_Gdk_Screen_Void;
Slot: not null access Glib.Object.GObject_Record'Class;
After: Boolean := False);
The ::screen-changed signal gets emitted when the screen of a widget has changed.

On_Scroll_Event

procedure On_Scroll_Event 
(Self: not null access Gtk_Widget_Record;
Call: Cb_Gtk_Widget_Gdk_Event_Scroll_Boolean;
After: Boolean := False);

On_Scroll_Event

procedure On_Scroll_Event 
(Self: not null access Gtk_Widget_Record;
Call: Cb_GObject_Gdk_Event_Scroll_Boolean;
Slot: not null access Glib.Object.GObject_Record'Class;
After: Boolean := False);
The ::scroll-event signal is emitted when a button in the 4 to 7 range is pressed. Wheel mice are usually configured to generate button press events for buttons 4 and 5 when the wheel is turned. To receive this signal, the Gdk.Gdk_Window associated to the widget needs to enable the GDK_SCROLL_MASK mask. This signal will be sent to the grab widget if there is one. Callback parameters: -- "event": the Gdk.Event.Gdk_Event_Scroll which triggered this signal. -- Returns True to stop other handlers from being invoked for the event. False to propagate the event further.

On_Selection_Clear_Event

procedure On_Selection_Clear_Event 
(Self: not null access Gtk_Widget_Record;
Call: Cb_Gtk_Widget_Gdk_Event_Selection_Boolean;
After: Boolean := False);

On_Selection_Clear_Event

procedure On_Selection_Clear_Event 
(Self: not null access Gtk_Widget_Record;
Call: Cb_GObject_Gdk_Event_Selection_Boolean;
Slot: not null access Glib.Object.GObject_Record'Class;
After: Boolean := False);
The ::selection-clear-event signal will be emitted when the the Widget's window has lost ownership of a selection. Callback parameters: -- "event": the Gdk.Event.Gdk_Event_Selection which triggered this signal. -- Returns True to stop other handlers from being invoked for the event. False to propagate the event further.

On_Selection_Get

procedure On_Selection_Get 
(Self: not null access Gtk_Widget_Record;
Call: Cb_Gtk_Widget_Gtk_Selection_Data_Guint_Guint_Void;
After: Boolean := False);

On_Selection_Get

procedure On_Selection_Get 
(Self: not null access Gtk_Widget_Record;
Call: Cb_GObject_Gtk_Selection_Data_Guint_Guint_Void;
Slot: not null access Glib.Object.GObject_Record'Class;
After: Boolean := False);
Callback parameters:

On_Selection_Notify_Event

procedure On_Selection_Notify_Event 
(Self: not null access Gtk_Widget_Record;
Call: Cb_Gtk_Widget_Gdk_Event_Selection_Boolean;
After: Boolean := False);

On_Selection_Notify_Event

procedure On_Selection_Notify_Event 
(Self: not null access Gtk_Widget_Record;
Call: Cb_GObject_Gdk_Event_Selection_Boolean;
Slot: not null access Glib.Object.GObject_Record'Class;
After: Boolean := False);
Callback parameters: -- Returns True to stop other handlers from being invoked for the event. False to propagate the event further.

On_Selection_Received

procedure On_Selection_Received 
(Self: not null access Gtk_Widget_Record;
Call: Cb_Gtk_Widget_Gtk_Selection_Data_Guint_Void;
After: Boolean := False);

On_Selection_Received

procedure On_Selection_Received 
(Self: not null access Gtk_Widget_Record;
Call: Cb_GObject_Gtk_Selection_Data_Guint_Void;
Slot: not null access Glib.Object.GObject_Record'Class;
After: Boolean := False);
Callback parameters:

On_Selection_Request_Event

procedure On_Selection_Request_Event 
(Self: not null access Gtk_Widget_Record;
Call: Cb_Gtk_Widget_Gdk_Event_Selection_Boolean;
After: Boolean := False);

On_Selection_Request_Event

procedure On_Selection_Request_Event 
(Self: not null access Gtk_Widget_Record;
Call: Cb_GObject_Gdk_Event_Selection_Boolean;
Slot: not null access Glib.Object.GObject_Record'Class;
After: Boolean := False);
The ::selection-request-event signal will be emitted when another client requests ownership of the selection owned by the Widget's window. Callback parameters: -- "event": the Gdk.Event.Gdk_Event_Selection which triggered this signal. -- Returns True to stop other handlers from being invoked for the event. False to propagate the event further.

On_Show

procedure On_Show 
(Self: not null access Gtk_Widget_Record;
Call: Cb_Gtk_Widget_Void;
After: Boolean := False);

On_Show

procedure On_Show 
(Self: not null access Gtk_Widget_Record;
Call: Cb_GObject_Void;
Slot: not null access Glib.Object.GObject_Record'Class;
After: Boolean := False);

On_Show_Help

procedure On_Show_Help 
(Self: not null access Gtk_Widget_Record;
Call: Cb_Gtk_Widget_Gtk_Widget_Help_Type_Boolean;
After: Boolean := False);

On_Show_Help

procedure On_Show_Help 
(Self: not null access Gtk_Widget_Record;
Call: Cb_GObject_Gtk_Widget_Help_Type_Boolean;
Slot: not null access Glib.Object.GObject_Record'Class;
After: Boolean := False);
Callback parameters: -- Returns True to stop other handlers from being invoked for the event. False to propagate the event further.

On_Size_Allocate

procedure On_Size_Allocate 
(Self: not null access Gtk_Widget_Record;
Call: Cb_Gtk_Widget_Cairo_Rectangle_Int_Void;
After: Boolean := False);

On_Size_Allocate

procedure On_Size_Allocate 
(Self: not null access Gtk_Widget_Record;
Call: Cb_GObject_Cairo_Rectangle_Int_Void;
Slot: not null access Glib.Object.GObject_Record'Class;
After: Boolean := False);

On_State_Changed

procedure On_State_Changed 
(Self: not null access Gtk_Widget_Record;
Call: Cb_Gtk_Widget_Gtk_State_Type_Void;
After: Boolean := False);

On_State_Changed

procedure On_State_Changed 
(Self: not null access Gtk_Widget_Record;
Call: Cb_GObject_Gtk_State_Type_Void;
Slot: not null access Glib.Object.GObject_Record'Class;
After: Boolean := False);
The ::state-changed signal is emitted when the widget state changes. See Gtk.Widget.Get_State.

On_State_Flags_Changed

procedure On_State_Flags_Changed 
(Self: not null access Gtk_Widget_Record;
Call: Cb_Gtk_Widget_Gtk_State_Flags_Void;
After: Boolean := False);

On_State_Flags_Changed

procedure On_State_Flags_Changed 
(Self: not null access Gtk_Widget_Record;
Call: Cb_GObject_Gtk_State_Flags_Void;
Slot: not null access Glib.Object.GObject_Record'Class;
After: Boolean := False);
The ::state-flags-changed signal is emitted when the widget state changes, see Gtk.Widget.Get_State_Flags.

On_Style_Set

procedure On_Style_Set 
(Self: not null access Gtk_Widget_Record;
Call: Cb_Gtk_Widget_Gtk_Style_Void;
After: Boolean := False);

On_Style_Set

procedure On_Style_Set 
(Self: not null access Gtk_Widget_Record;
Call: Cb_GObject_Gtk_Style_Void;
Slot: not null access Glib.Object.GObject_Record'Class;
After: Boolean := False);
The ::style-set signal is emitted when a new style has been set on a widget. Note that style-modifying functions like Gtk.Widget.Modify_Base also cause this signal to be emitted. Note that this signal is emitted for changes to the deprecated Gtk.Style.Gtk_Style. To track changes to the Gtk.Style_Context.Gtk_Style_Context associated with a widget, use the Gtk.Widget.Gtk_Widget::style-updated signal.

On_Style_Updated

procedure On_Style_Updated 
(Self: not null access Gtk_Widget_Record;
Call: Cb_Gtk_Widget_Void;
After: Boolean := False);

On_Style_Updated

procedure On_Style_Updated 
(Self: not null access Gtk_Widget_Record;
Call: Cb_GObject_Void;
Slot: not null access Glib.Object.GObject_Record'Class;
After: Boolean := False);
The ::style-updated signal is emitted when the Gtk.Style_Context.Gtk_Style_Context of a widget is changed. Note that style-modifying functions like Gtk.Widget.Override_Color also cause this signal to be emitted.

On_Touch_Event

procedure On_Touch_Event 
(Self: not null access Gtk_Widget_Record;
Call: Cb_Gtk_Widget_Gdk_Event_Boolean;
After: Boolean := False);

On_Touch_Event

procedure On_Touch_Event 
(Self: not null access Gtk_Widget_Record;
Call: Cb_GObject_Gdk_Event_Boolean;
Slot: not null access Glib.Object.GObject_Record'Class;
After: Boolean := False);

On_Unmap

procedure On_Unmap 
(Self: not null access Gtk_Widget_Record;
Call: Cb_Gtk_Widget_Void;
After: Boolean := False);

On_Unmap

procedure On_Unmap 
(Self: not null access Gtk_Widget_Record;
Call: Cb_GObject_Void;
Slot: not null access Glib.Object.GObject_Record'Class;
After: Boolean := False);

On_Unmap_Event

procedure On_Unmap_Event 
(Self: not null access Gtk_Widget_Record;
Call: Cb_Gtk_Widget_Gdk_Event_Any_Boolean;
After: Boolean := False);

On_Unmap_Event

procedure On_Unmap_Event 
(Self: not null access Gtk_Widget_Record;
Call: Cb_GObject_Gdk_Event_Any_Boolean;
Slot: not null access Glib.Object.GObject_Record'Class;
After: Boolean := False);
The ::unmap-event signal will be emitted when the Widget's window is unmapped. A window is unmapped when it becomes invisible on the screen. To receive this signal, the Gdk.Gdk_Window associated to the widget needs to enable the GDK_STRUCTURE_MASK mask. GDK will enable this mask automatically for all new windows. Callback parameters: -- "event": the Gdk.Event.Gdk_Event_Any which triggered this signal -- Returns True to stop other handlers from being invoked for the event. False to propagate the event further.

On_Unrealize

procedure On_Unrealize 
(Self: not null access Gtk_Widget_Record;
Call: Cb_Gtk_Widget_Void;
After: Boolean := False);

On_Unrealize

procedure On_Unrealize 
(Self: not null access Gtk_Widget_Record;
Call: Cb_GObject_Void;
Slot: not null access Glib.Object.GObject_Record'Class;
After: Boolean := False);

On_Visibility_Notify_Event

procedure On_Visibility_Notify_Event 
(Self: not null access Gtk_Widget_Record;
Call: Cb_Gtk_Widget_Gdk_Event_Visibility_Boolean;
After: Boolean := False);

On_Visibility_Notify_Event

procedure On_Visibility_Notify_Event 
(Self: not null access Gtk_Widget_Record;
Call: Cb_GObject_Gdk_Event_Visibility_Boolean;
Slot: not null access Glib.Object.GObject_Record'Class;
After: Boolean := False);
The ::visibility-notify-event will be emitted when the Widget's window is obscured or unobscured. To receive this signal the Gdk.Gdk_Window associated to the widget needs to enable the GDK_VISIBILITY_NOTIFY_MASK mask. Callback parameters: -- "event": the Gdk.Event.Gdk_Event_Visibility which triggered this -- signal. -- Returns True to stop other handlers from being invoked for the event. False to propagate the event further.

On_Window_State_Event

procedure On_Window_State_Event 
(Self: not null access Gtk_Widget_Record;
Call: Cb_Gtk_Widget_Gdk_Event_Window_State_Boolean;
After: Boolean := False);

On_Window_State_Event

procedure On_Window_State_Event 
(Self: not null access Gtk_Widget_Record;
Call: Cb_GObject_Gdk_Event_Window_State_Boolean;
Slot: not null access Glib.Object.GObject_Record'Class;
After: Boolean := False);
The ::window-state-event will be emitted when the state of the toplevel window associated to the Widget changes. To receive this signal the Gdk.Gdk_Window associated to the widget needs to enable the GDK_STRUCTURE_MASK mask. GDK will enable this mask automatically for all new windows. Callback parameters: -- "event": the Gdk.Event.Gdk_Event_Window_State which triggered this -- signal. -- Returns True to stop other handlers from being invoked for the event. False to propagate the event further.