[Paraview-developers] Handling exceptions from within a Plug-in

[Mathieu Westphal]

Hello

vtkErrorMacro is the way to go to inform the user of the error, but it will
not exit the method, only inform.
After that you need to return 0 if you want the pipeline execution to stop.

Regards,




Mathieu Westphal

On Fri, May 13, 2016 at 2:54 PM, Ellon Paiva <ellonpaiva at gmail.com> wrote:

> Hello Mathieu,
>
> Thanks for your answer.
>
> I think I was not clear in my question. Surely I can catch the exception
> in the plugin, but I'm looking for a way to inform paraview that an error
> occurred while executing the filter. Of course this information should be
> passed to ParaView when handling the exception, and probably it should halt
> the processing of the pipeline as well.
>
> I'm looking now into the files of some plugins inside paraview source. I
> found that some plugins use the macro "vtkErrorMacro". Would this work for
> me?
>
> Regards,
>
> Ellon
>
>
> On 05/13/2016 02:47 PM, Mathieu Westphal wrote:
>
> Hello
>
> I supose it's kind of obvious, but why would catch not work ? you should
> be able to catch your library exception in your filter.
>
> Regards,
>
> Mathieu Westphal
>
> On Fri, May 13, 2016 at 2:39 PM, Ellon Paiva <ellonpaiva at gmail.com> wrote:
>
>> Hello all,
>>
>> I have a plug-in for paraview that wraps filters from an specific
>> library, and these filters that may throw exceptions when if not configured
>> properly (example, if the input data doesn't have some fields). I've been
>> looking for a way to catch these exceptions inside the plug-in and inform
>> paraview about the error/problem, like for example showing the error
>> information in the paraview error window, but I couldn't find an
>> explanation of how to do that. Could anyone explain me how to do that or
>> show an example of code for that?
>>
>> Regards,
>> Ellon
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>
>
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