# Class virtual OgtkButtonProps.color_button_notify

    class virtual color_button_notify : [> `colorbutton ] Gobject.obj -> object .. end

    val obj : ([> `colorbutton ] as 'a) Gobject.obj

    method private notify : 'b. ('a, 'b) Gobject.property -> callback:('b -> unit) -> GtkSignal.id

    method alpha : callback:(int -> unit) -> GtkSignal.id

    method color : callback:(Gdk.color -> unit) -> GtkSignal.id

    method title : callback:(string -> unit) -> GtkSignal.id

    method use_alpha : callback:(bool -> unit) -> GtkSignal.id