How to Transparrent/Alphablend MainWindow...

[DjCzermino]

At first, sorry my english..

I have a simple question, how to make transparrent (aplhablended)
Mainwindow/widget/frame (and other components on it)?? I tried to do
this by setPalette and set Alpha channel but it was not good..
(I looked like that the desktop under it is black, but on my desktop i
have a picture... :-))

I want THIS for slow "fade out" my application when you close it...

Help please!! :-(

[aamer4yu]

QWidget::setWindowOpacity ( qreal level )