auto window = MainFrame_getWindow().create_dialog_window("Arbitrary sides", G_CALLBACK(dialog_delete_callback ), &dialog );
auto accel = ui::AccelGroup(ui::New);
window.add_accel_group( accel );
auto window = MainFrame_getWindow().create_dialog_window("Arbitrary sides", G_CALLBACK(dialog_delete_callback ), &dialog );
auto accel = ui::AccelGroup(ui::New);
window.add_accel_group( accel );