SWING中windowclosing是什么?
用swing写了一个GUI,在关闭窗口时,使得窗口在某一条件下,不关闭,即取消关闭窗口的动作。 /** mFrame2。java** Created on 2005年7月4日, 下午1:12*/package DialogExample;/**** @author Administrator*/public class mFrame2 extends javax。
swing。JFrame {/** Creates new form mFrame2 */public mFrame2 {initComponents;}/** This method is called from within the constructor to* initialize the form。
* WARNING: Do NOT modify this code。 The content of this method is* always regenerated by the Form Editor。*/private void initComponents {buttonGroup1 = new javax。
swing。ButtonGroup;buttonGroup2 = new javax。swing。ButtonGroup;buttonGroup3 = new javax。swing。ButtonGroup;jPanel1 = new javax。
swing。JPanel;jTextField1 = new javax。swing。JTextField;jButton1 = new javax。swing。JButton;setDefaultCloseOperation(javax。
swing。WindowConstants。DO_NOTHING_ON_CLOSE);addWindowListener(new java。awt。event。WindowAdapter {public void windowClosing(java。
awt。event。WindowEvent evt) {exitForm(evt);}});jPanel1。setBorder(new javax。swing。border。TitledBorder("Tilte Broder"));jTextField1。
setText("jTextField1");jPanel1。add(jTextField1);jButton1。setText("jButton1");jPanel1。add(jButton1);getContentPane。add(jPanel1, java。
awt。BorderLayout。NORTH);pack;}/** Exit the Application */private void exitForm(java。awt。event。WindowEvent evt) {if(true) {System。
out。println("hello exiting");// return;}//System。exit(0);}/*** @param args the command line arguments*/public static void main(String args[]) {new mFrame2。
show;}// Variables declaration - do not modifyprivate javax。swing。ButtonGroup buttonGroup1;private javax。swing。ButtonGroup buttonGroup2;private javax。
swing。ButtonGroup buttonGroup3;private javax。swing。JButton jButton1;private javax。swing。JPanel jPanel1;private javax。swing。
JTextField jTextField1;// End of variables declaration}关键的代码是 setDefaultCloseOperation(javax。swing。WindowConstants。DO_NOTHING_ON_CLOSE);private void exitForm(java。
awt。event。WindowEvent evt) {if(true) {System。out。println("hello exiting");// return;}//System。exit(0);}此程序单击“×”之后什么也不做,只是在console中输出"hello exiting" 。
我来说两句