rb_define_method (cWindow, "sticky?", c_sticky_get, 0);
rb_define_method (cWindow, "sticky=", c_sticky_set, 1);
rb_define_method (cWindow, "borderless?", c_borderless_get, 0);
rb_define_method (cWindow, "borderless=", c_borderless_set, 1);
rb_define_method (cWindow, "sticky?", c_sticky_get, 0);
rb_define_method (cWindow, "sticky=", c_sticky_set, 1);
rb_define_method (cWindow, "borderless?", c_borderless_get, 0);
rb_define_method (cWindow, "borderless=", c_borderless_set, 1);