rb_define_method (cWindow, "resize", c_resize, 2);
rb_define_method (cWindow, "size", c_size_get, 0);
rb_define_method (cWindow, "geometry", c_geometry_get, 0);
rb_define_method (cWindow, "resize", c_resize, 2);
rb_define_method (cWindow, "size", c_size_get, 0);
rb_define_method (cWindow, "geometry", c_geometry_get, 0);