int cursor_leave_event_base(BC_WindowBase *caller);
int cursor_enter_event_base(BC_WindowBase *caller);
int button_press_event_base(BC_WindowBase *caller);
int keypress_event(BC_WindowBase *caller);
int cursor_leave_event_base(BC_WindowBase *caller);
int cursor_enter_event_base(BC_WindowBase *caller);
int button_press_event_base(BC_WindowBase *caller);
int keypress_event(BC_WindowBase *caller);