gtk/widget.go
func (v *Widget) SetVExpand(expand bool) {
	C.gtk_widget_set_vexpand(v.native(), gbool(expand))
}
func (v *Widget) SetVExpand(expand bool) {
	C.gtk_widget_set_vexpand(v.native(), gbool(expand))
}
// SetVExpand is a wrapper around gtk_widget_set_vexpand().