mouseeventdemo.java

来自「本书属于《开发专家之 Sun ONE》系列丛书」· Java 代码 · 共 56 行

//MouseEventDemo.java
import java.awt.*;
import java.awt.event.*;

public class MouseEventDemo extends Frame 
{
	//构造方法
	public MouseEventDemo()
	{
		Button btnMouse=new Button("测试鼠标事件");
		//添加鼠标事件
		btnMouse.addMouseListener(new MyMouseListener() );
		//添加鼠标移动事件
		btnMouse.addMouseMotionListener(new MyMouseMotionListener());
		
		this.setLayout(new FlowLayout());
		this.add(btnMouse);
		//显示框架窗口
		this.setSize(400,300);
		this.setVisible(true);
	}
	//程序的入口方法
	public static void main( String[] args ) 
	{
		MouseEventDemo frame=new MouseEventDemo();
		//设置框架窗体的事件适配器监听(关闭窗体事件)
		frame.addWindowListener(new WindowAdapter(){
			public void windowClosing(WindowEvent e)
			{
				System.exit(0);
			}
		});		
	}
	//扩展了鼠标事件监听事件适配器器的类
	class MyMouseListener extends MouseAdapter 
	{
		//mouse Click event
		public void mouseClicked(MouseEvent e) {
			if( e.isPopupTrigger() )
				System.out.println("你现在单击鼠标右键");
			if( e.getClickCount() == 2 )
				System.out.println("你现在双击鼠标");
		}
		//mouse enter event
		public void mouseEnterred(MouseEvent e){
			System.out.println("鼠标进入组件区域");
		}
	}
	//扩展了鼠标移动监听事件适配器的类
	class MyMouseMotionListener extends MouseMotionAdapter
	{
		public void mouseMoved(MouseEvent e){
			System.out.println("鼠标组件区域内移动");
		}
	}
}