gtk/gtk.go
func (v *VolumeButton) native() *C.GtkVolumeButton {
	if v == nil || v.GObject == nil {
		return nil
	}
	p := unsafe.Pointer(v.GObject)
	return C.toGtkVolumeButton(p)
}
func (v *VolumeButton) native() *C.GtkVolumeButton {
	if v == nil || v.GObject == nil {
		return nil
	}
	p := unsafe.Pointer(v.GObject)
	return C.toGtkVolumeButton(p)
}
// native() returns a pointer to the underlying GtkVolumeButton.