java JFrame - 使用 JComponent 和 MouseListener 进行鼠标单击
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JFrame - mouse click using JComponent and MouseListener
提问by URL87
Having 2 classes -
有 2 个班级 -
public class MainClass {
public static void main(String[] args) {
JFrame frame = new JFrame();
....
Component mouseClick = new MyComponent() ;
frame.setVisible(true);
}
public class MyComponent extends JComponent implements MouseListener {
@Override
public void mouseClicked(MouseEvent arg0) {
System.out.println("here was a click ! ");
}
...
}
I trying to set on the framea listener for mouse click , but when I run it and then press mouse click nothing happens .
我试图在frame侦听器上设置鼠标单击，但是当我运行它然后按鼠标单击时什么也没有发生。
How to make it work ?
如何使它工作？
回答by Octahedron
In order to receive mouse clicks on your frame, you also need to add mouseClickto the frame's list of MouseListeners. Try adding this line after you create mouseClick:
为了收到您的框架上的鼠标点击，您还需要添加mouseClick到的帧的列表MouseListeners。创建后尝试添加此行mouseClick：
frame.addMouseListener((MouseListener) mouseClick);
