[vtkusers] from 4.0 version to CVS version

[Bruno Travençolo]

Hello all!

>    error C2664: 'SetInput' : cannot convert parameter 1 from 'class
>vtkImageData *' to 'class vtkDataSet *' .
>But vtkImageData inherits from vtkDataSet. How can it be possible?
>  
>
You have to do a type cast to corret this. Ex:.         
iso->SetInput((vtkDataSet *) vol);
where vol is an object from StructuredPoint class.

I also would like to know why we have to do that , like you said, 
vtkImageData inherits from vtkDataSet

>May someone help me?
>
>Gwenael
>
>
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