`object
method changed : callback:(unit -> unit) -> GtkSignal.id
method private virtual connect :
'b. ([> `combobox ] as 'a, 'b) GtkSignal.t -> callback:'b -> GtkSignal.id
method private virtual notify :
'b. ('a, 'b) Gobject.property -> callback:('b -> unit) -> GtkSignal.id
method notify_active : callback:(int -> unit) -> GtkSignal.id
method notify_add_tearoffs : callback:(bool -> unit) -> GtkSignal.id
method notify_focus_on_click : callback:(bool -> unit) -> GtkSignal.id
method notify_has_frame : callback:(bool -> unit) -> GtkSignal.id
method notify_wrap_width : callback:(int -> unit) -> GtkSignal.id
end`