the mouse's wheel roll problem in embedded linux

[lzpmail]

no one found this problem before, i really don't know what the reason, please help.

[Spitfire]

Are you doing anything odd, like triggering mouse events to change cursor position, or triggering mouse events at all anywhere in your app?

Create very simple app which will only print events comming in and see if that happens there as well.
It may be a bug in Qt but I wouldn't bet on it, more likely it's something in your app.