[vtkusers] Re: [vtk-developers] patch for turning (almost) all VTK errors into Python exceptions, IMPROVED

[David Gobbi]

Charl P. Botha wrote:
> On 8/8/06, David Gobbi <dgobbi at atamai.com> wrote:
>> I just want to make sure that an app that uses VTK's built-in main loop
>> (i.e. that
>> doesn't use a separate GUI toolkit) will also return to the main loop
>> after an
>> exception.
>
> I just checked with the VolumeRenderWithBoxWidget.py example and
> modified the EndInteractionEvent to perform a VTK action that
> generates an exception.  The application simply continues when this
> happens, as expected.
>
> The code simply results in a Python exception, not a C++-exception.
> Python exceptions in general don't result in application exit if
> they're not explicitly handled, AFAICR.
>
> Also remember that the old behaviour can be reinstated with:
> ow = vtk.vtkOutputWindow()
> ow.SetInstance(ow)
>
> So far, I haven't been able to think of any serious drawbacks to this
> vtkPythonOutputWindow approach.

Thanks for checking.  I'm convinced,  I vote for commit.

 - David