But this is not true - scope guard object restores state, but aa flag is lost and
it's easy to see - window's titlebar has ugly screwed font.
The same problem can be reproduced in a standalone program.
I have to manually turn on anti-aliasing every time I turn it off.


git-svn-id: http://root.cern.ch/svn/root/trunk@44155 27541ba8-7e3a-0410-8455-c3a389f83636