mousetest.java

鼠标事件鼠标事件鼠标事件鼠标事件鼠标事件鼠标事件鼠标事件鼠标事件鼠标事件鼠标事件鼠标事件

import java.awt.BorderLayout;
import java.awt.Button;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.MouseEvent;
import java.awt.event.MouseListener;
import java.awt.event.MouseMotionListener;

import javax.swing.JFrame;

public class MouseTest extends JFrame
{
    public MouseTest()
    {
        Button b = new Button("JavaWorld JavaQ&A");
        b.addActionListener(new ActionListener()
        {
            public void actionPerformed(ActionEvent e)
            {
                System.exit(0);
            }
        });
        getContentPane().add(b, BorderLayout.NORTH);
        getContentPane().addMouseListener(new MouseTest.MouseHandler());
        getContentPane().addMouseMotionListener(new MouseTest.MouseMotionHandler());
        this.setSize(300, 300);
        setLocation(100, 100);
        pack();
        setVisible(true);
    }

    // MouseHandler is an inner class that implements the MouseListener.
    // Each method simply prints out a message to the command line.
    private class MouseHandler implements MouseListener
    {
        //鼠標按下事件
        public void mousePressed(MouseEvent e)
        {
            //do something
            
            //print the position
            System.out.println("mouse pressed" + e.getPoint());
        }
        //鼠標單擊事件
        public void mouseClicked(MouseEvent e)
        {
            //do something
            
            //print the position
            System.out.println("moused clicked" + e.getPoint());
        }
        //鼠標松開事件
        public void mouseReleased(MouseEvent e)
        {
            //do something
            
            //print the position
            System.out.println("mouse released" + e.getPoint());
        }
        //進入鼠標事件監聽區域
        public void mouseEntered(MouseEvent e)
        {
            //do something
            
            //print the position
            System.out.println("mouse entered" + e.getPoint());
        }
        //離開鼠標事件監聽區域
        public void mouseExited(MouseEvent e)
        {
            //do something
            
            //print the position
            System.out.println("mouse exited" + e.getPoint());
        }
    }

    // MouseMotionHandler is an inner class that implements the
    // MouseMotionListener.
    // Each method simply prints out a message to the command line.
    private class MouseMotionHandler implements MouseMotionListener
    {
        public void mouseMoved(MouseEvent e)
        {
            //do something
            
//            System.out.println("mouse moved");
        }

        public void mouseDragged(MouseEvent e)
        {
            //do something
            
//            System.out.println("mouse dragged");
        }
    }

    public static void main(String[] args)
    {
        new MouseTest();
    }
}