[Qt-interest] Overlay in conflict to QPainter?

[Malyushytsky, Alex]

I am not an expert at this topic but I think it is not only ( or not at all) hardware issues.
System and Opengl implementation may provide or don't provide opengl overlay support.
For example as far as I know hardware OpenGL overlays are an obsolete feature on Vista.

Alex


-----Original Message-----
From: qt-interest-bounces at trolltech.com [mailto:qt-interest-bounces at trolltech.com] On Behalf Of Oliver.Knoll at comit.ch
Sent: Thursday, July 22, 2010 9:17 AM
To: qt-interest at trolltech.com
Subject: Re: [Qt-interest] Overlay in conflict to QPainter?

unimd at web.de wrote on Thursday, July 22, 2010 11:12 AM:

> ...
> QGLWidget::paintOverlayGL()' ...
> Has anyone used this function so far? Or do you have any suggestions
> to my problem? Everything will help.

I just tried with a simple example, but QGLFormat::hasOpenGLOverlays() claims that my system doesn't have GL overlay support. Admittedly with some dodgy laptop graphics card on Windows XP, "nVidia Quadro NVS 120M". But I can't remember any graphics card that I ever had to have "GL overlay support", so just out of curiosity: what kind of graphics card do you actually use? ;)

Cheers, Oliver
--
Oliver Knoll
Dipl. Informatik-Ing. ETH
COMIT AG - ++41 79 520 95 22
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