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