testwindowlistener.java

java2 primer plus一书源程序

/*
 * TestWindowListener.java
 *
 * Created on August 9, 2002, 2:32 PM
 */

package ch14;

import java.awt.*;
import java.awt.event.*;


/**
 *
 * @author  Stephen Potts
 */
public class TestWindowListener extends Frame 
{
    Scrollbar sb;
    TextField tField;
    
    
    /** Creates a new instance of TestWindowListener */
    public TestWindowListener()
    {
        sb=new Scrollbar(Scrollbar.VERTICAL, 0, 1, 0, 255);
        add(sb);
        tField = new TextField(30);
        add(tField);
        
        this.setLayout(new FlowLayout());
        
        addWindowListener(new WinHandler());
        setTitle("Using a Scrollbar Object");
        setBounds( 100, 100, 400, 400);
        setVisible(true);
    }
    
   
    public static void main(String[] args)
    {
        TestWindowListener twl= new TestWindowListener();
    }
    
    
}

class WinHandler implements WindowListener
{
    public void windowClosing(WindowEvent e)
    {
        System.out.println("windowClosing() called");
        System.exit(0);
    }
    
    public void windowActivated(java.awt.event.WindowEvent windowEvent)
    {
        System.out.println("windowActivated() called");
    }
    
    public void windowClosed(java.awt.event.WindowEvent windowEvent)
    {
        System.out.println("windowClosed() called");
    }
    
    public void windowDeactivated(java.awt.event.WindowEvent windowEvent)
    {
        System.out.println("windowDeactivated() called");
    }
    
    public void windowDeiconified(java.awt.event.WindowEvent windowEvent)
    {
        System.out.println("windowDeiconified() called");
    }
    
    public void windowIconified(java.awt.event.WindowEvent windowEvent)
    {
        System.out.println("windowIconified called");
    }
    
    public void windowOpened(java.awt.event.WindowEvent windowEvent)
    {
        System.out.println("windowOpened() called");
    }
    
}