Wheel mouse and focus

[dasousa]

I am running into an issue with a NetBeans 6.7 application running on Windows XP. I am listening for wheel mouse movement in a TopComponent in the editor mode. I used the NetBeans GUI to create the wheel mouse event handler. A very simple test application can be created by just printing the mouse wheel clicks to System.out.

When the editor window is first opened, everything works OK. However, once the Properties window has been displayed and pinned the editor no longer receives mouse wheel events when the properties window has been unpinned. Once the properties window is pinned again, then the mouse wheel events start occuring.

I'd post the code, but it involves the whole application and not just the formMouseWheelMoved method. Does anybody have an idea of what could be happening?

Thanks.

[Marek Slama]

dasousa wrote:

[dasousa]

What I mean by pinned is when the property window is docked in the properties mode and not sliding. In other words, the properties window will display even when it is not the active window.

Unpinned means that the property window will slide to the right and become hidden when it does not have the focus. The wheel mouse problem occurs when the properties window is in the state where it has slid to the right and is hidden.

The problem will even occur when the property window is closed after first having been displayed and "pinned" open.

[dasousa]

The only way that I was able to solve this problem was to have the TopComponent implement FocusListener. Then to call requestActive() in the focusGained method.

The componentActivated method was never called even when the tab was highlighted blue after closing the Properties window and clicking on the center TopComponent.

Having the TopComponent implement FocusListener, and then add itself as a FocusListener on itself seems a little worrisome. Can anybody think of a better way?

Thanks