frame1.java

方面

package popnenu;

import java.awt.*;
import java.awt.event.*;
import javax.swing.*;

/**
 * <p>Title: </p>
 * <p>Description: </p>
 * <p>Copyright: Copyright (c) 2002</p>
 * <p>Company: </p>
 * @author unascribed
 * @version 1.0
 */

public class Frame1 extends JFrame {
  JPanel contentPane;
  BorderLayout borderLayout1 = new BorderLayout();
  PopupMenu popupMenu1 = new PopupMenu();
  Menu menu1 = new Menu();
  MenuItem menuItem1 = new MenuItem();
  MenuItem menuItem2 = new MenuItem();
  Menu menu2 = new Menu();
  MenuItem menuItem3 = new MenuItem();
  MenuItem menuItem4 = new MenuItem();
  MenuItem menuItem5 = new MenuItem();

  //Construct the frame
  public Frame1() {
    enableEvents(AWTEvent.WINDOW_EVENT_MASK);
    try {
      jbInit();
    }
    catch(Exception e) {
      e.printStackTrace();
    }
  }
  //Component initialization
  private void jbInit() throws Exception  {
    //setIconImage(Toolkit.getDefaultToolkit().createImage(Frame1.class.getResource("[Your Icon]")));
    contentPane = (JPanel) this.getContentPane();
    contentPane.setLayout(borderLayout1);
    this.setResizable(false);
    this.setSize(new Dimension(400, 300));
    this.setTitle("弹出式菜单");
    this.addMouseListener(new java.awt.event.MouseAdapter() {
      public void mouseClicked(MouseEvent e) {
        this_mouseClicked(e);
      }
    });
    menu1.setLabel("改变颜色");
    menuItem1.setLabel("blue");
    menuItem1.addActionListener(new java.awt.event.ActionListener() {
      public void actionPerformed(ActionEvent e) {
        menuItem1_actionPerformed(e);
      }
    });
    menuItem2.setLabel("red");
    menuItem2.addActionListener(new java.awt.event.ActionListener() {
      public void actionPerformed(ActionEvent e) {
        menuItem2_actionPerformed(e);
      }
    });
    menu2.setLabel("改变标题");
    menuItem3.setLabel("中文");
    menuItem3.addActionListener(new java.awt.event.ActionListener() {
      public void actionPerformed(ActionEvent e) {
        menuItem3_actionPerformed(e);
      }
    });
    menuItem4.setLabel("英文");
    menuItem4.addActionListener(new java.awt.event.ActionListener() {
      public void actionPerformed(ActionEvent e) {
        menuItem4_actionPerformed(e);
      }
    });
    menuItem5.setLabel("退出");
    menuItem5.addActionListener(new java.awt.event.ActionListener() {
      public void actionPerformed(ActionEvent e) {
        menuItem5_actionPerformed(e);
      }
    });
    popupMenu1.add(menu1);
    popupMenu1.add(menu2);
    popupMenu1.add(menuItem5);
    menu1.add(menuItem1);
    menu1.add(menuItem2);
    menu2.add(menuItem3);
    menu2.add(menuItem4);
  }
  //Overridden so we can exit when window is closed
  protected void processWindowEvent(WindowEvent e) {
    super.processWindowEvent(e);
    if (e.getID() == WindowEvent.WINDOW_CLOSING) {
      System.exit(0);
    }
  }

  void this_mouseClicked(MouseEvent e) {
this.add(popupMenu1);
    if(e.getModifiers()==Event.META_MASK){
    popupMenu1.show(this,e.getX(),e.getY());
}
  }

  void menuItem1_actionPerformed(ActionEvent e) {
 setBackground(Color.blue);
  }

  void menuItem2_actionPerformed(ActionEvent e) {
 setBackground(Color.red);
  }

  void menuItem3_actionPerformed(ActionEvent e) {
this.setTitle("弹出式菜单显示");
  }

  void menuItem4_actionPerformed(ActionEvent e) {
 this.setTitle("Show Popup Menu ");
  }

  void menuItem5_actionPerformed(ActionEvent e) {
 System.exit(0);
  }
}