ShowFullScreen problem on Mac OSX

[mrdebug]

In order to have a QDialog in full screen mode, I run this row:
MyDialog->showFullScreen();
This row works on Linux and Windows but not on Mac.
Can you help me on having a QDialog in full screen mode on Mac?

[SGaist]

Hi,

What exactly is not working ? And on which OS X/Qt combo are you working ?

[mrdebug]

Mac OSX Lion, Qt 5.1.
Is impossible to automatically have a full screen QDialog. I have to maximize manually.

[SGaist]

Since it's Lion, do you mean the OS X full screen (like when you click the upper right corner) ? Or the standard full screen ? In the second case (IIRC), you can't have a widget that covers the upper bar on OS X.