# Class virtual OgtkButtonProps.tool_button_notify

    class virtual tool_button_notify : [> `toolbutton ] Gobject.obj -> object .. end

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

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

    method icon_widget : callback:(GObj.widget -> unit) -> GtkSignal.id

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

    method label_widget : callback:(GObj.widget -> unit) -> GtkSignal.id

    method stock_id : callback:(GtkStock.id -> unit) -> GtkSignal.id

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