atitit.窗体静听esc退出本窗体java swing c# .net php
1. 监听esc 按键 1
1.1. 监听一个组件 1
1.2. 监听加在form上 1
2. 关闭窗体 2
1. 监听esc 按键
1.1. 监听一个组件
1.2. 监听加在form上
作者:: 老哇的爪子 Attilax 艾龙, EMAIL:1466519819@qq.com
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(){
.............
});
这个办法最好。监听了所有事件。不管是在哪个componet上,button,form等..
这个不起作用,可能focus到个一个组件上栏。。三,这个only不个事件捆绑到个frm上兰..
// 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. 关闭窗体
只要在每个Frame里设定this.setDefaultCloseOperation(DISPOSE_ON_CLOSE);即可。
EXIT_ON_CLOSE,关闭程序。(所有窗口和进程都会关闭)
DISPOSE_ON_CLOSE,只关闭本窗口。
HIDE_ON_CLOSE,只隐藏本窗口,不关闭。
DO_NOTHING_ON_CLOSE,不做任何事,点击关闭无效。
这很简单,只要调用dispose方法即可。隐藏是setVisible(false)。关闭程序是System.exit(0);
frame.setDefaultCloseOperation(javax.swing.WindowConstants.DISPOSE_ON_CLOSE);
if (evt.getKeyCode() == KeyEvent.VK_ESCAPE) {
frame.dispose();
// System.exit(0);
}
参考
java怎么样通过按钮关闭一个JFrame_百度知道.htm

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