[vtkusers] vtkImageViewer2 shows only a black image under Windows

[Kacper Pluta]

Hi!

I'm working on a Windows port of code which was written under Linux and OS
X, and I have strange problem with vtkImageViewer2, under Windows it shows
only a black screen.

All data are loaded from raw file and mapped by vtkImageData


vtkSmartPointer< vtkImageData > CaseDataImage::GetVTKImage()
{
  if(image || ReadFromCache()) {
    m_ReferenceCount++;

    m_ToVTK->SetWholeExtent( 0, image->row_size - 1, 0, image->col_size -
1, 0, image->depth_size - 1 );
    m_ToVTK->SetDataExtentToWholeExtent();

    if(GetDataType() == VFF_TYP_1_BYTE ) {

      m_ToVTK->SetDataScalarTypeToUnsignedChar();

    } else if (GetDataType() == VFF_TYP_2_BYTE ) {

        m_ToVTK->SetDataScalarTypeToUnsignedShort();
      }
      m_ToVTK->SetNumberOfScalarComponents( 1 );
      m_ToVTK->SetImportVoidPointer( image->image_data );
      m_ToVTK->Update();

      return m_ToVTK->GetOutput();

  } else {

    return NULL;
  }
}

And vtkImageViewer2:

m_MainViewer = vtkSmartPointer< vtkImageViewer2 >::New();
m_MainViewer->SetInput( MagazinClass::imageData->GetVTKImage() );
m_MainViewer->SetColorLevel( -200.0 +
MagazinClass::imageData->GetShiftToPositive() );
m_MainViewer->SetColorWindow( 500.0 );
m_MainViewer->SetRenderWindow( vtkData2DMainSlice->GetRenderWindow() );
m_MainViewer->SetupInteractor(
vtkData2DMainSlice->GetRenderWindow()->GetInteractor() );
m_MainViewer->SetSliceOrientation( axis );
m_MainViewer->SetSlice( slice );

Strange because under Linux and OS X everything works great.
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