Window with size bigger than screen

Hey there,

I am trying to create a window that has a greater size than my screen size.
After creating the window I like to save the window contents (GL graphics) with gl2ps as pdf.

Can someone give me a hint how I can do this? All windows get croped to something smaller than screen size. I think in an older OF version this worked fine. I am now on Linux. Maybe the last time it worked i was on Windows. I will try it again under Windows.