Hi,
This is an old one, that seemingly no-one has a solution for....

I am having problems on W7/W8 when "aero" is active in our MFC/OGL(OSG) based 
CAE style application.

1) MFC CSplitterWnd resizing leaves 'window garbage' behind
2) How to draw an rubber-banding zoom box (using XOR operations) on the OpenGL 
window - we were using GDI, of course this is a no-no now.

We have to advise the user to revert to Windows 7/8 basic theme. Of course they 
never read the release notes, so support gets the call....

I was wondering how to resolve 2) using OSG. I suppose it's a HUD type problem. 
I want to draw over the existing rendered scene without requiring the 
underlying scene to be re-rendered. It quite simple to do a XOR'd rectangle 
using gl* calls in screen coordinates, but I'm at a loss how to integrate that 
into an OSG scene.

Thank you!

Cheers,
Andrew

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http://forum.openscenegraph.org/viewtopic.php?p=56471#56471





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