[vtkusers] how to add additional member- variables to a filter

[Joseph McCoy]

hi all,

i intented to enhance some vtkFilter- objects (e.g.
vtkDataSetToPolyDataFilter) with additional variables, for example an
integer. first, i tried:
///////////////
public:
  ...
  vtkSetMacro(TestInt, int);

protected:
  ...
  int iTest;
////////////////
compilation works, but when i call
  int i = ... ;
  myFilter->SetTestInt(i);
the app crashes.

i also tried it without macro:
///////////////
public:
  ...
  void SetTestInt(int i);
protected:
  ...
  int iTest;
---
void myFilter::SetTestInt(int i) {
  this->iTest = i;
}
////////////////
again compilation works, but again the app crashed when i called SetTestInt.

does anybody know what i'm missing? i'm on windows xp with vc++7 .net 2003
and vtk 4.4. many thanks in advance...

Joseph

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