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HomeBackend DevelopmentPHP Tutorialatitit.窗体静听esc退出本窗体java swing c# .net php

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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