[Qt-interest] Regression between QT 4.5.3 over QT 4.5.0: OpenGL-drawn widgets no longer updating correctly

[Christian Buchner]

Hi,

our OpenGL (OpenSceneGraph) based app uses transparent widgets
overlaid on top of a 3D rendered scene, as described in this QT
Quarterly article: http://doc.trolltech.com/qq/qq26-openglcanvas.html

When we upgraded to QT 4.5.3 from 4.5.0 we noticed that most of the
displayed widgets stopped updating correctly, for examples plots that
would be updated based on a timer would suddenly only update when the
window was manually resized.

Or spinboxes inside the windows would often not update their displayed
value when you clicked the "down" or "up" arrows - and the arrows
would often remain in depressed state even after releasing the mouse
button.

Needless to say that we had to revert to QT 4.5.0 because of this issue.

Has anyone run into the same problem in a similar use case (QT widgets
rendered in OpenGL) ?

Christian