JDesktopPane ContainerListener和JInternalFrame图标化事件

Question

So I have a desktoPane and it has containerListener. I have this containerListener to add or remove buttons from taskbar when you add or remove internal frames. Everything was ok while I haven't clicked to minimize icon (-). It came clear that when you minimize internalFrame it throws two events:

1. InternalFrame was removed;
2. DesktopIcon was added

and when you click restore it has again has two events:

1. DesktopIcon was removed;
2. InternalFrame was added

As a result when you click minimize the button from taskbar disappears. So the question - how can I distinguish between "normal" events when you yourself add internalframe to desktopPane and these iconified events?

Answer 1

Don't use a ContainerListener for this. That's a fairly low-level interface for watching the component hierarchy. Instead use JInternalFrame.addInternalFrameListener . The InternalFrameListener interface fires dedicated methods for the opening, closing, minimizing and restoring events.