# Class virtual OgtkBinProps.expander_props

    class virtual expander_props : object .. end

    val virtual obj : [> `expander ] Gobject.obj

    method set_expanded : bool -> unit

    method set_label : string -> unit

    method set_label_widget : GObj.widget -> unit

    method set_spacing : int -> unit

    method set_use_underline : bool -> unit

    method expanded : bool

    method label : string

    method label_widget : GObj.widget

    method spacing : int

    method use_underline : bool