[vtkusers] QVTKWidget crashing randomly when maximized or closed.

ferr ferr.mail at gmail.com
Thu Dec 17 19:34:27 EST 2009


Good point, I'll try that out.


Clinton Stimpson wrote:
> 
> 
> 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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