How can I get the size the window will have when show() is called? That is, whatever size "updateGeometry" will set.

I don't need the frameGeometry, I know the issues there. But the actual size is completely calculable prior to showing -- as QT does that.

I need to center certain windows around the mouse, but I can only do this if I know the size. I don't show the window first since it produces an undesirable flickering (since I have to move it while visible).