# Class GBin.expander_signals

    class expander_signals : [> Gtk.expander ] Gtk.obj -> object .. end

Since GTK 2.4 (gtkdoc: gtk GtkExpander)
Inherits

- `GContainer.container_signals`

    val obj : ([> Gtk.expander ] as 'a) Gtk.obj

    method activate : callback:(unit -> unit) -> GtkSignal.id

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

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

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

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

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