Translucent frameless window problem on Kubuntu

[Mr.Simple]

this->setAttribute(Qt::FramelessWindowHint)ï¼›

[superpacko]

Hey, im not with a kubuntu box right now, but i'll try it later. Have you tried?
I can't see how this would solve the problem, the flag Qt::FramelessWindowHint in the QWidget constructor is working since i get a frameless window. The problem is that the widget gets painted wiht grey, instead of been transparent(i didnt apply any style or background color)

anyway i'll give it a try when im back home.
thanks!