[vtk-developers] problems with vtkStructuredPointsWriter [WinXP VTK5.2.1]

[Paolo Quadrani]

Dear all,
I'm starting to learn VTK 5.2 (I come from VTK 4.4) and I encountered  
this problem:
I have a vtkStructuredPoints volume and I have to write it into a  
string, so I'm using the snippet code below:

....
       vtkStructuredPointsWriter *w = vtkStructuredPointsWriter::New();
       w->SetInput(dataStructured);
       w->SetFileTypeToBinary();
       w->SetWriteToOutputString(1);
       w->Update();

       std::string s;
       s = w->GetOutputString();
...

the output string of the writer contains only the header of the input  
data.
I tried also to set the FileTypeToASCII, but in that case I get an  
error from the vtkDataWriter.cxx at line 1723:

vtkErrorMacro("OutputString allocated buffer is not large enough.");

Saving the data into a file instead there are no problems.
Am I doing something wrong?

Thanks in advance.

Paolo Quadrani
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