[Qt-interest] Why my Qt lib always have no output on ARM's screen?

[Kermit Mei]

Hello community!

    I miss a strange question. I compiled Qtopia4.2.1, both commercial
and opensource edition I tried. But the problem is same: there's no
output on my ARM's screen. Everything looks goes well in terminal.
    The more strange thing is that if I use the previous teams lib left
on ARM, and use my application which compiled on my evoriment,
everything goes well. Only when I instead of their libs, the screen show
nothing. 

    By the way, the last team give us no help. I just want to compiled a
Qt-Env by myself, and run my application on it.

    What may cause it?

Thanks
Regards

Kermit