MouseListener和MouseMotionListener 接口

最新推荐文章于 2023-01-11 19:56:33 发布

原创最新推荐文章于 2023-01-11 19:56:33 发布 · 2k 阅读

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CC 4.0 BY-SA版权

本文介绍了Java中Swing框架下使用MouseListener和MouseMotionListener处理鼠标事件的基本原理和实现方式，包括点击、拖动、悬停等操作。

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两个

public interface MouseListener extends EventListener

{

public void mousePressed(MouseEvent e);//鼠标按键在组件上单击（按下并释放）时调用。

public void mouseReleased(MouseEvent e); //鼠标按钮在组件上释放时调用。

public void mouseClicked(MouseEvent e);//鼠标按键在组件上按下时调用。

public void mouseEntered(MouseEvent e);// 鼠标进入到组件上时调用。

public void mouseExited(MouseEvent e);//鼠标离开组件时调用。

}

public interface MouseMotionListener extends EventListener

{

public void mouseDragged(MouseEvent e);// 鼠标按键在组件上按下并拖动时调用。

public void mouseMoved(MouseEvent e);// 鼠标光标移动到组件上但无按键按下时调用。

}

ps：mousePressed是在鼠标按下时调用

MouseCliked是在鼠标按下抬起之后调用

例子：

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

class AboutFrame extends JFrame implements MouseListener,MouseMotionListener{
	private JPanel aboutPane;
	private JLabel msg;
	private JLabel msg1;
	private JLabel msg2;
	private JButton exit;

	public AboutFrame(String strName) {
		super(strName);
		setSize(180, 170);
		setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		
		aboutPane = new JPanel();
		msg = new JLabel("JMine written by Jerry Shen.");
		msg1 = new JLabel("         Enjoy!           ");
		msg2 = new JLabel("Vision 1.0                ");
		exit = new JButton("Exit");
		exit.addMouseListener(this);
		aboutPane.add(msg);
		aboutPane.add(msg1);
		aboutPane.add(msg2);
		aboutPane.add(exit);
		aboutPane.addMouseMotionListener(this);

		setContentPane(aboutPane);
		setLocation(250,220);
	}


	// the event handle to deal with the mouse click
	public void mouseClicked(MouseEvent e) {
		//this.setVisible(false);
		System.out.println("Clicked");
	}

	public void mousePressed(MouseEvent e) {
		System.out.println("Press");

	}
	public void mouseReleased(MouseEvent e) {
		//System.out.println("Jerry Release");
	}
	public void mouseExited(MouseEvent e) {
		System.out.println("Jerry Exited");

	}
	public void mouseEntered(MouseEvent e) {
		//System.out.println("Jerry Entered");

	}
	
	public void mouseDragged(MouseEvent e){
		System.out.println("Jerry dragged");
	}
	public void mouseMoved(MouseEvent e){
		System.out.println("Jerry move");
	}

	public static void main(String[] args) {
		AboutFrame about = new AboutFrame("Win");
		about.show();
	}
	
}