All form controls signal the following dependency notifications:
- #entered - when the pen is pressed in the control's
bounds.
- #selected - when the pen is lifted in the control's
bounds.
- #exited - when the pen is lifted outside the control's
bounds.
Button
The aspect for a Button is the selector to be sent to the parent
Application when the button is pressed. If the aspect is nil, no
notification is sent when the button is pressed (the button still
receives #entered, #selected, and #exited dependency events).
Fields
Fields receive a #height dependency event when their height
changes.