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<DIV>Thanks for your replies.</DIV>
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<DIV>>>Jothy </DIV>
<DIV>>>Why don't you use a if statement to find out whether the file really exists are not?<BR>>>The try to read it.</DIV>
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<DIV>I was using a file read as an example, for example the source could fail due to out of memory or some other condition.<BR><BR>>>David, I think he wants to put that logic inside the filter and the find out if it failed outside the filter.</DIV>
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<DIV>I'm not looking to write my own filter. What I would like to know is, given a particular VTK source / filter, is it possible to know if the filter's Update method has failed or not? For example a filter could fail due to out of memory or some other condition, is everyone just assuming these filters will always work and not checking them for any error codes?</DIV>
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<DIV>I think that ITK supports something like the code below, so what I can do in VTK for the equivalent functionality?</DIV>
<DIV>try</DIV>
<DIV>{</DIV>
<DIV> Update()</DIV>
<DIV>}</DIV>
<DIV>catch(...)</DIV>
<DIV>{</DIV>
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