[vtkusers] QVTKWidget crashing randomly when maximized or closed.

[Clinton Stimpson]

On Thursday 17 December 2009 05:27:10 pm ferr wrote:
> As far as that thread goes, I'm surprised that's not posted by me.  I'm
> dupicating his exact efforts and running into the same problems.  I'll
> guess that he's not using QVTKWidget so odds are that, yes, it is a bug
> with Qt.
>
> The thing about using a QWidget inbetween the mdi and the render window,
> QVTKWidget inherits from QWidget, so I wouldn't be accomplishing much.
> There isn't anything a QWidget would be able to do that the QVTKWidget
> couldn't do.
> class /*QVTK_EXPORT*/ QVTKWidget : public QWidget

I realize that, but you'd be setting the Window flags on a plan QWidget as 
opposed to a QVTKWidget.  Or if you remove QVTKWidget and use QWidget (to take 
VTK out of the situation), and the problem still persists, then you've 
probably proven its a Qt bug.

Clint

>
> Funny thing is, once the MinMax attribute is removed, I can add in a Max
> attribute and there is no crashing when I close a maximized window/etc.  So
> there's just something up with Qt's MinMax attributue.
>
> Clinton Stimpson wrote:
> > On Thursday 17 December 2009 02:57:16 pm ferr wrote:
> >> OK, I narrowed it down to this:
> >>
> >> _MdiAreaRender->currentSubWindow()->setWindowFlags(Qt::WindowMinMaxButto
> >>nsH int);
> >>
> >> Once this is commented out it works.  It doesn't crash, which is good.
> >> Are
> >> there window flags that DO work with this?  I want to be able to
> >> customize
> >> these windows..
> >
> > I wonder if this is the same that someone else saw.
> > <http://lists.trolltech.com/qt-interest/2008-08/msg00387.html>
> > Looks like a Qt bug.
> >
> > Does creating an intermediate QWidget help?  What about removing the
> > QVTKWidget from the MDI and using QWidget instead?
> >
> > Clint
> >
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