int cursor_motion_event();
int button_press_event();
int button_release_event();
int cursor_motion_event();
int button_press_event();
int button_release_event();
int test_crop(int button_press, int &redraw);
int test_bezier(int button_press,
int &redraw,
int test_crop(int button_press, int &redraw);
int test_bezier(int button_press,
int &redraw,