mouseeventtest.java

java课程的资料以及实验的代码

//多监听器的实现
import java.awt.*;
import java.awt.event.*;

public class MouseEventTest extends Frame implements MouseListener,MouseMotionListener{
  private TextArea ta;
  private Label lb;
  public static void main(String args[]){
    MouseEventTest test=new MouseEventTest();
    test.setSize(300,200);
    test.setVisible(true);
  }

  public MouseEventTest(){
    ta=new TextArea();
    ta.addMouseListener(this);//ta处理MouseEvent事件
    ta.addMouseMotionListener(this);
    lb=new Label();
    add(ta,BorderLayout.CENTER);
    add(lb,BorderLayout.SOUTH);
  }

  public void mouseClicked(MouseEvent e){
    if ((e.getModifiers() & MouseEvent.META_MASK)==0) //左键还是右键
       ta.append("left");
    else
       ta.append("right");
    ta.append(" click "+e.getClickCount()+" times\n");
  }

  public void mouseEntered(MouseEvent e){
    ta.append("enter\n");
  }

  public void mouseExited(MouseEvent e){
    ta.append("exit\n");
  }

  public void mousePressed(MouseEvent e){
    ta.append("press\n");
  }
  
  public void mouseReleased(MouseEvent e){
    ta.append("release\n");
  }

  public void mouseDragged(MouseEvent e){
  //实现MouseMotionListener
  ta.append("drag\n");
  }

  public void mouseMoved(MouseEvent e){
    lb.setText(e.getX()+","+e.getY());
  }
}