import org.zkoss.zk.ui.Executions;
import org.zkoss.zk.ui.select.SelectorComposer;
import org.zkoss.zk.ui.util.Clients;
import org.zkoss.zk.ui.util.DesktopCleanup;
import org.zkoss.zul.Window;

public class Composer849 extends SelectorComposer<Window> {

	private static final long serialVersionUID = -7360829196117880724L;

	@Override
	public void doAfterCompose(Window comp) throws Exception {
		Clients.confirmClose("Make sure");
		
		Executions.getCurrent().getDesktop().addListener(new DesktopCleanup(){
			
			@Override
			public void cleanup(org.zkoss.zk.ui.Desktop desktop)
					throws Exception {
				System.out.println("test...");
				
			}
		});
		super.doAfterCompose(comp);
	}
}

 
<zk>

	<zk>
		<window border="normal" title="hello" apply="Composer849">

			<div>Welcome to ZK Fiddle , run it right now!</div>

		</window>
		<script>

		</script>
	</zk>
</zk>