Main window size larger than monitor

[dpamplona]

Hi!
I would like to set the Main window size larger that the monitor resolution in full screen (like a virtual desktop).
For that, I thought I should use the command:

viz.window.getFullscreenRectangle([x,y, w,h])

However when I write:

--------------------------------
import viz,math

viz.window.setFullscreenRectangle([0, 0, 2024, 2024])
(...)
-----------------------------------------------------

I got the attribute Error:
AttributeError: '_WindowInterface' object has no attribute 'setFullscreenRectangle'

However if I type:

----------------------------------------------------
import viz,math

if viz.window.getFullscreen():
print 'fullscreen'
else:
print 'window
-------------------------------------------------------
it gives the correct output 'fullscreen'


This is wired, because both of them are part of the same module viz:window.

Can anybody explain to me what is going on? What should I correct? And even more, is setFullScreenRectangle the command that I should use?