[Qt-interest] QMdiArea and updating of MdiSubwindows

[Jaco Naude]

Hi

I'm getting strange behavior when adding QGLWidget widgets (QwtPlot3D
surface plot) to a QMdiArea. All my widgets gets updated correctly except
the QGLWidgets.

To best explain the problem, I've attached a couple of screenshots. I have
the ability to undock/dock widgets from the MdiArea and the screenshots
shows the same widget with QMdiArea as its parent, thus docked, while the
other picture shows the same widget undocked, parent set to 0.

In the screenshots it can be seen that the docked QGLWidget does not update
itself when other widgets move over it. Sometimes a little part of the
widget is updated correclty, and sometimes nothing is updated as shown in
the screenshot.

Any ideas why this is happening?
Thanks for any tips.
Jaco
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