procedure DoEnter; virtual;
virtual void __fastcall DoEnter();
OnEnter event dispatcher.
DoEnter is called automatically when the control receives the input focus.
DoEnter repaints the control, starts the animation by calling StartTriggerAnimation, and applies effects by calling ApplyTriggerEffect. The applied animations and effects highlight the focused control.
Override the protected DoEnter method to provide other responses when the current control receives focus.