Atitit. Form listening ESC exit This form Java Swing C #. NET PHP

Atitit. form Listening ESC exit this form java Swing C #. NET PHP

1. Monitor ESC key 1

1.1. Listening on a component 1

1.2. Monitoring added to form 1

2. Close Form 2

1. MonitoringESCKey

1.1. Listen for a component 1.2. Monitor added toformon

Author :: Old Wow's paw attilax ayron, email:[email protected]

Reprint please indicate source: Http://blog.csdn.net/attilax

Final Toolkit Toolkit = Toolkit.getdefaulttoolkit ();

Toolkit.addawteventlistener (New Awteventlistener () {

@Override public void eventdispatched (AWTEvent e) {

if (e.getid () = = keyevent.key_pressed) {

KeyEvent evt = (keyevent) e;

if (evt.getkeycode () = = Keyevent.vk_escape) {

Frame.dispose ();

System.exit (0);

}

}

}

},awtevent.key_event_mask);

Java Code
Toolkit.getdefaulttoolkit (). Addawteventlistener (New Awteventlistener () {
.............
});

This is the best way. Listens for all events. No matter on which componet, Button,form and so on.

This does not work, possibly focus to one component on the bar. Three, this only event tied to a frm on the blue.

Frame.addkeylistener (New Keyadapter () {

@Override

public void keypressed (KeyEvent e) {

if (Keyevent.vk_escape = = E.getkeycode ()) {

System.exit (0);

//                 System.out.println ("---colose...");

//                 frame.dispose ();

//                }

//            }

//        });

2. Close the form

Just set this.setdefaultcloseoperation (dispose_on_close) in each Frame ; can be.

Exit_on_close, close the program. (All windows and processes will be closed)

Dispose_on_close, close this window only.

Hide_on_close, hide this window only, do not close.

Do_nothing_on_close, do nothing, click Close Invalid.

This is simple, as long as you call the Dispose method. Hide is setvisible (false). Close the program is system.exit (0);

Frame . setdefaultcloseoperation (javax.swing.WindowConstants. Dispose_on_close );

if (evt. getKeyCode () = = KeyEvent. Vk_escape ) {

Frame. Dispose ();

//system.exit (0);

}

Reference

Java how to close a jframe_ by button Baidu knows. htm

Atitit. Form listening ESC exit This form Java Swing C #. NET PHP