func (v *Notebook) SetActionWidget(widget IWidget, packType PackType) {
	C.gtk_notebook_set_action_widget(v.native(), widget.toWidget(),
		C.GtkPackType(packType))
}
func (v *Notebook) SetActionWidget(widget IWidget, packType PackType) {
	C.gtk_notebook_set_action_widget(v.native(), widget.toWidget(),
		C.GtkPackType(packType))
}
// SetActionWidget() is a wrapper around gtk_notebook_set_action_widget().