mousePressed（）无效 [英] mousePressed() not working

问题描述

我已经尝试了很多但无济于事。我没有得到点击鼠标的坐标。有人请帮助我

I have tried a lot but to no avail. I am not getting the co-ordinates at which the mouse was clicked. Someone please help me

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

public class MyMouseClick extends Frame 
{
    int x=0,y=0;
    Label lbl1;
    
    MyMouseClick()
    {
        super("Mouse Click Event");
        setSize(300,300);
        setVisible(true);
        lbl1=new Label("Lable");
        add(lbl1,BorderLayout.CENTER);
        
        addMouseListener(new MouseAdapter()
                                            {
                                              @Override
                                              public void mousePressed(MouseEvent me)
                                              {
                                                  x=me.getX();
                                                  y=me.getY();
                                                  lbl1.setText("You pressed as "+x+","+y);
                                              }
                                            });
        addWindowListener(new WindowAdapter()
                                            {
                                              @Override
                                              public void windowClosing(WindowEvent me)
                                              {
                                                 setVisible(false);
                                                 System.exit(0);
                                              }
                                            });
    }
    
    public static void main(String args[])
    {
        new  MyMouseClick();
    }
}

已添加代码块[/ Edit]

Code block added[/Edit]

推荐答案

您已添加标签框架并将mouselistener添加到框架中。但是你添加的标签覆盖了整个框架，这就是你想到的原因，你点击框架，实际上你点击了标签，虽然标签没有mouselistener，所以你不能接收任何事件。要测试它，请更改以下内容：

You have added a label into the frame and add the mouselistener into the frame. But what happened the label you added cover the total frame and that is the reason when you thought, you are clicking on the frame , actually you clicked on the label and though the label has no mouselistener so you can''t receive any event. To test it change the following things :

lbl1.addMouseListener(new MouseAdapter(){.....});

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