[DllImport("libgtk-win32-2.0-0.dll")]
                static extern void gtk_dialog_set_alternative_button_order_from_array(IntPtr raw, int n_params, int[] new_order);

                public int[] AlternativeButtonOrder {
                        set {
                                gtk_dialog_set_alternative_button_order_from_array(Handle, value != null ? value.Length: 0, new_order);
                        }
                }