JFrame-使用JComponent和MouseListener进行鼠标单击 [英] JFrame - mouse click using JComponent and MouseListener
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问题描述
有2个课程-
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 ! ");
}
...
}
我试图在frame
上设置鼠标单击的侦听器,但是当我运行它然后按鼠标单击时,没有任何反应.
I trying to set on the frame
a listener for mouse click , but when I run it and then press mouse click nothing happens .
如何使其工作?
推荐答案
为了在框架上获得鼠标单击,还需要将mouseClick
添加到框架的MouseListeners
列表中.创建mouseClick
后,尝试添加此行:
In order to receive mouse clicks on your frame, you also need to add mouseClick
to the frame's list of MouseListeners
. Try adding this line after you create mouseClick
:
frame.addMouseListener((MouseListener) mouseClick);
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