将mouseListener添加到BufferedImage时出错

Question

我想在点击一个buffereImage时发出声音。但它显示了这个错误：方法addMouseListener（new MouseAdapter（）｛｝）对于BufferedImage 类型是未定义的

这是代码：

public class TestPane extends JPanel {
    public TestPane() {
        setLayout(new PropertionalLayoutManager(400, 400));
        add(new Symbol(), new PropertionalConstraint(0f, 0));
        add(new Symbol(), new PropertionalConstraint(0.67f, 0));
        //add(new Symbol(), new PropertionalConstraint(0f, 0.4675f));
        //add(new Symbol(), new PropertionalConstraint(0.67f, 0.4675f));
        add(new Drum(), new PropertionalConstraint(0.205f, 0.1f));
        add(new Drum(), new PropertionalConstraint(0.5f, 0.1f));
        add(new Drum(), new PropertionalConstraint(0f, 0.33f));
        add(new Drum(), new PropertionalConstraint(0.705f, 0.33f));

     DRUM.addMouseListener(new MouseAdapter()
     {
          public void mouseClicked(MouseEvent me) 
          {
            Sound1.Sound5.play();
          }
        }); 

    }static {
    try {
        SYMBOL = ImageIO.read(new File("HiCrash.png"));
    } catch (IOException ex) {
        ex.printStackTrace();
    }
    try {
        DRUM = ImageIO.read(new File("HiTom.png"));
    } catch (IOException ex) {
        ex.printStackTrace();
    }
}
}

Answer 1

MouseListener只能添加到可以在屏幕上显示的组件中。默认情况下，BufferedImage不能在屏幕上显示，除非首先被某些组件包裹（例如JLabel或绘制在JPanel的表面上）。

事实上，你不能把鼠标监听器添加到任何不支持它的东西上…

相反，将MouseListener添加到Drum或Symbol类

您可能想阅读一下如何编写鼠标侦听器