func (v *Widget) SetHExpand(expand bool) {
	C.gtk_widget_set_hexpand(v.native(), gbool(expand))
}
func (v *Widget) SetHExpand(expand bool) {
	C.gtk_widget_set_hexpand(v.native(), gbool(expand))
}
// SetHExpand is a wrapper around gtk_widget_set_hexpand().