method private virtual connect : b. ([> `expander ] as 'a, 'b) GtkSignal.t -> callback:'b -> GtkSignal.idmethod private virtual notify : b. ('a, 'b) Gobject.property -> callback:('b -> unit) -> GtkSignal.idmethod activate : < activate : callback:(unit -> unit) -> GtkSignal.id; notify_expanded : callback:(bool -> unit) -> GtkSignal.id; notify_label : callback:(string -> unit) -> GtkSignal.id; notify_label_widget : callback:(GObj.widget -> unit) -> GtkSignal.id; notify_spacing : callback:(int -> unit) -> GtkSignal.id; notify_use_underline : callback:(bool -> unit) -> GtkSignal.id; .. > -> callback:(unit -> unit) -> GtkSignal.idmethod notify_expanded : < activate : callback:(unit -> unit) -> GtkSignal.id; notify_expanded : callback:(bool -> unit) -> GtkSignal.id; notify_label : callback:(string -> unit) -> GtkSignal.id; notify_label_widget : callback:(GObj.widget -> unit) -> GtkSignal.id; notify_spacing : callback:(int -> unit) -> GtkSignal.id; notify_use_underline : callback:(bool -> unit) -> GtkSignal.id; .. > -> callback:(bool -> unit) -> GtkSignal.idmethod notify_label : < activate : callback:(unit -> unit) -> GtkSignal.id; notify_expanded : callback:(bool -> unit) -> GtkSignal.id; notify_label : callback:(string -> unit) -> GtkSignal.id; notify_label_widget : callback:(GObj.widget -> unit) -> GtkSignal.id; notify_spacing : callback:(int -> unit) -> GtkSignal.id; notify_use_underline : callback:(bool -> unit) -> GtkSignal.id; .. > -> callback:(string -> unit) -> GtkSignal.idmethod notify_label_widget : < activate : callback:(unit -> unit) -> GtkSignal.id; notify_expanded : callback:(bool -> unit) -> GtkSignal.id; notify_label : callback:(string -> unit) -> GtkSignal.id; notify_label_widget : callback:(GObj.widget -> unit) -> GtkSignal.id; notify_spacing : callback:(int -> unit) -> GtkSignal.id; notify_use_underline : callback:(bool -> unit) -> GtkSignal.id; .. > -> callback:(GObj.widget -> unit) -> GtkSignal.idmethod notify_spacing : < activate : callback:(unit -> unit) -> GtkSignal.id; notify_expanded : callback:(bool -> unit) -> GtkSignal.id; notify_label : callback:(string -> unit) -> GtkSignal.id; notify_label_widget : callback:(GObj.widget -> unit) -> GtkSignal.id; notify_spacing : callback:(int -> unit) -> GtkSignal.id; notify_use_underline : callback:(bool -> unit) -> GtkSignal.id; .. > -> callback:(int -> unit) -> GtkSignal.idmethod notify_use_underline : < activate : callback:(unit -> unit) -> GtkSignal.id; notify_expanded : callback:(bool -> unit) -> GtkSignal.id; notify_label : callback:(string -> unit) -> GtkSignal.id; notify_label_widget : callback:(GObj.widget -> unit) -> GtkSignal.id; notify_spacing : callback:(int -> unit) -> GtkSignal.id; notify_use_underline : callback:(bool -> unit) -> GtkSignal.id; .. > -> callback:(bool -> unit) -> GtkSignal.id