[vtkusers] wx python scripts segfault

[David Gobbi]

My only advice is to use wxRenderWindow instead.  Regardless of the
name, it actually does provide interaction, and most importantly, it
doesn't crash like wxRenderWindowInteractor does (or at least, not on
my ubuntu 8.04 system).

The difference between the two classes is that wxRenderWindow does the
interaction purely in python, while wxRenderWindowInteractor uses a
vtkGenericRenderWindowInteractor.  (Note: this difference is probably
unrelated to the crash).

If wxRenderWindow doesn't serve your purpose and you need
wxRenderWindowInteractor, then I suggest that the best way to debug it
is to work your way backward from any instances of SetWindowInfo,
SetParentInfo, or SetNextWindowInfo that appear in the code.  Add lots
of print statements to the python code so that you can correlate the
C++ stack trace to a position in the python code.  Also, take a look
at vtkXOpenGLRenderWindow.cxx to see what SetWindowId and related
methods are doing under-the-hood.

Unfortunately I'm not very familiar with wxPython anymore (it's been
around eight years since I've used it), but I hope my limited memory
has provided some help.

   David


On Sat, Feb 27, 2010 at 5:54 AM, David Doria <daviddoria+vtk at gmail.com> wrote:
> On Fri, Feb 26, 2010 at 10:07 AM, David Doria <daviddoria+vtk at gmail.com>
> wrote:
>>
>> I am using wxWidgets2.8 and wxPython2.8 built from source on Fedora 11. If
>> I run
>> python wxVTKRenderWindowInteractor.py
>> from
>> /home/doriad/src/VTK/Wrapping/Python/vtk/wx
>> it just says "Segmentation Fault".
>> Any thoughts on why this might be?
>> Thanks,
>>
>> David
>
> Here is a link to the backtrace produced by a simple script:
> http://www.rpi.edu/~doriad/wxPython/
>
> Can anyone decypher this?
>
> Thanks,
>
> David
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