QMainWindow->centralWidget with alpha?

[wafto]

Hi,

How can I make the central widget in a QMainWindow with alpha channel and see thow it, the background of the desktop or anything else back of my QMainwindow?

[wysota]

Unfortunately this is platform dependent. In Unix you can use ARGB windows with the composite extension turned on in the X server. With Windows Vista you need to use the platform API regarding manipulation of the client area. With older Windows systems the effect might not be possible to achieve at all.

[wafto]

mm.. Ok, thanks.