[vtkusers] vtkMergeDataObjectFilter in vtk4.2.x

[mccoy]

hi all,

some time ago i posted a question regarding the difference of data aquiring in vcpp and tcl. in detail i wasn't able to merge a geometryfile and an attributefile together using vtkMergeDataObjectFilter in cpp (i allways got 'can't find array/component requested') , but in tcl it worked fine. 
finally i found out  that the tcl-vtk  environment is still 4.0, but for vcpp i used vtk4.2.2. i downloaded the vtk4.0 source, compiled it and rebuild my vcpp- code and now it also works. 

here's the cpp- code that works fine with vtk4.0:

/////////////////////////////////////////////////////////////////////////

 dsReader = vtkDataSetReader::New();
 dsReader->SetFileName("E:\\geo.vtk");
 
 doReader = vtkDataObjectReader::New();
 doReader->SetFileName("E:\\att.vtk");
 doReader->Update();

 cArrayName = doReader->GetOutput()->GetFieldData()->GetArray(0)->GetName();
 
 mdof = vtkMergeDataObjectFilter::New();
 mdof->SetInput(dsReader->GetOutput() );
 mdof->SetDataObject(doReader->GetOutput() );

 fd2ad = vtkFieldDataToAttributeDataFilter::New();
 fd2ad->SetInput(mdof->GetOutput() );
 fd2ad->SetScalarComponent(0, cArrayName, 0);

 dsMapper = vtkDataSetMapper::New();
 dsMapper->SetInput(fd2ad->GetOutput() );

//////////////////////////////////////////////////////////////////////////////

does anybody know, how to use vtkMergeDataObjectFilter in vtk4.2? do i have to change my code (if yes: how? ) or the format of the vtk- data file? 

many thanks in advance
Joseph
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