virtual bool button_press (GdkEventButton *);
virtual bool button_release (GdkEventButton *);
virtual bool motion (GdkEventMotion *);
virtual bool expose (GdkEventExpose *);
virtual bool scroll (GdkEventScroll *);
virtual bool entry_focus_out (GdkEventFocus*);
virtual bool button_press (GdkEventButton *);
virtual bool button_release (GdkEventButton *);
virtual bool motion (GdkEventMotion *);
virtual bool expose (GdkEventExpose *);
virtual bool scroll (GdkEventScroll *);
virtual bool entry_focus_out (GdkEventFocus*);