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用JavaMail显示复合邮件的内容 - 编程入门网

作者 佚名技术 来源 NET编程 浏览 发布时间 2012-06-22
效的。

Java Swing中的键盘事件处理(3)

时间:2010-12-19

附:主要程序代码:

import java.awt.*; import javax.swing.*; import com.borland.jbcl.layout.*; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import com.sun.java.swing.plaf.motif.*; public class EventPanel extends JPanel implements ActionListener {   JButton btnYellow = new JButton();   JButton btnBlue = new JButton();   JButton btnRed = new JButton();   JPanel parentPanel = new JPanel();   JPanel sonPanel = new JPanel();   XYLayout xYLayout1 = new XYLayout();   JButton son = new JButton();   JButton parent = new JButton();   public EventPanel()   {    try{     jbInit();    }catch(Exception ex)    { ex.printStackTrace(); }    }   void jbInit() throws Exception   {    btnYellow.setText("Yellow");    btnYellow.setBounds(new Rectangle(35, 23, 97, 29));    this.setLayout(null);    btnBlue.setBounds(new Rectangle(154, 21, 97, 29));    btnBlue.setText("Blue");    btnRed.setBounds(new Rectangle(272, 24, 97, 29));    btnRed.setText("Red");    parentPanel.setBorder(BorderFactory.createRaisedBevelBorder());    parentPanel.setBounds(new Rectangle(27, 68, 358, 227));    parentPanel.setLayout(xYLayout1);    sonPanel.setBorder(BorderFactory.createLoweredBevelBorder());    son.setText("son");    parent.setText("parent");    this.add(btnYellow, null);    this.add(btnBlue, null);    this.add(btnRed, null);    this.add(parentPanel, null);    parentPanel.add(sonPanel, new XYConstraints(58, 22, 229, 125));    sonPanel.add(son, null);    parentPanel.add(parent, new XYConstraints(150, 167, -1, -1));    btnYellow.addActionListener(this);    btnRed.addActionListener(this);    btnBlue.addActionListener(this);    InputMap focusIm,focusFatherIm,ancestorIm,windowIm;    ActionMap am;    //create four TextAction for diff purpose    TextAction whenFocusSon = new TextAction("focus son");    TextAction whenFocusFather = new TextAction("focus father");    TextAction window = new TextAction("window");    TextAction ancestor = new TextAction("ancestor");    //get default inputMap (when focus inputmap) and set a parent InputMap    focusIm = son.getInputMap();    focusFatherIm = new InputMap();    focusIm.setParent(focusFatherIm);    //get WHEN_ANCESTOR_OF_FOCUSED_COMPONENT inputMap    ancestorIm = son.getInputMap(WHEN_ANCESTOR_OF_FOCUSED_COMPONENT);    //get WHEN_IN_FOCUSED_WINDOW inputMap    windowIm = son.getInputMap(WHEN_IN_FOCUSED_WINDOW);    //put the keyStroke to the InputMap    focusIm.put(KeyStroke.getKeyStroke(''f''),"actionFocusSon");    focusFatherIm.put(KeyStroke.getKeyStroke(''F''),"actionFocusFather");    ancestorIm.put(KeyStroke.getKeyStroke(''a''),"actionAncestor");    windowIm.put(KeyStroke.getKeyStroke(''w''),"actionWindow");    //get t

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