MouseListener事件在Java中不起作用

Question

I'm creating an application in which a list of images will be displayed in JList. Each image will be displayed as embedded in a panel. When user moves cursor over the images, images should be displayed as enlarged in another frame.

Now, I've implemented MouseListner interface over each panel displaying an event. and I've added mouseListner() over each panel.

Now, when user clicks or moves in or out of panel .. no events are occuring.

Is it because of the fact that when I'm clicking on an image, I'm actually clicking on JLabel and not on the panel directly?

What might be other cause?

Answer 1

Is it because of the fact that when I'm clicking on an image, I'm actually clicking on JLabel and not on the panel directly?

You are actually clicking on the JList. A renderer is NOT a real component.

You need to add the MouseListener to the JList and then determine which rendered item was clicked by using the indexToLocation(...) method of the JList.

Edit:

Actually that should be locationToIndex(...) method of the JList. Sometimes my fingers don't type what my mind is thinking :)

Answer 2

如果要捕获鼠标移动事件，则需要实现MouseMotionListener而不是MouseListener 。