* <li>Constants.SC_ENABLEDSHUTDOWN Posts Shutdown event to window�s task and to all tasks started by that task. This is the default value.</li>
*/
public void setSystemClosePolicy(int policy) {
this.qq_SystemClosePolicy = policy;
if (policy == Constants.SC_DISABLED) {
this.addComponentListener(new CloseHideAdaptor(this));
} else {
for (ComponentListener cl : this.getComponentListeners()) {
if (cl instanceof CloseHideAdaptor) {
this.removeComponentListener(cl);
break;