TCustomForm.Activate procedure
Signals the OnActivate event handler when a form is focused in an application.
Declaration
procedure Activate; virtualDescription
Activate is a procedure used to signal the
OnActivate
event handler (if assigned) when the form is focused in an application.
Activate is called when the
CM_Activate message is handled for the
form. It is called after the OnShow event is signalled in the DoShow method.
Activate uses an internal member to determine whether the form is being
focused for the first time, or following a change of focus between forms.
No actions are performed in the method when the form is being focused for
the first time and the WindowState property contains
wsMaximized or wsFullScreen.
Use OnShow to respond to the event notification performed when the
form is displayed for the first time.
Use OnChangeBounds or OnResize to respond to delayed
changes to the form bounds (position) or resize events.
See Deactivate for the actions performed when the form instance
loses focus.
See also
An experiment, built from development snapshots. Not the official Free Pascal or Lazarus documentation.