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<font size="-1"><font face="Helvetica, Arial, sans-serif">I'm trying to
figure out how error reporting works in VTK. A lot of VTK functions
like SetInputConnection do not seem to return anything, either on error
or success. If my program is going through its pipeline, how can I
check for an error in one of the steps? Like if I specify a dicom file
in the dicom reader, how do I know if it was read successfully?<br>
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Basically I have a very simple program and I'm getting a blank screen,
but I'd like to know how to debug it. Like how does one check if
objects are valid along the pipeline?<br>
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