How to create a fullscreen window using a Qt control?

[nnevatie]

The docs document a method Create for RenderWindow as follows:

http://www.sfml-dev.org/documentation/1.5/classsf_1_1Window.htm#58e264c181fd70e67986d26fea69a71d

However, is it possible to change the video mode when using an existing control to create the RenderWindow?

This would be very useful, as I would like my Qt based app to run in fullscreen mode (with the selected resolution, Qt's showFullScreen() isn't enough).