gtk/widget.go
func (v *Widget) SetSizeRequest(width, height int) {
	C.gtk_widget_set_size_request(v.native(), C.gint(width), C.gint(height))
}
func (v *Widget) SetSizeRequest(width, height int) {
	C.gtk_widget_set_size_request(v.native(), C.gint(width), C.gint(height))
}
// SetSizeRequest is a wrapper around gtk_widget_set_size_request().