#ifndef DISABLE_VTKVIEWER
if ( SVTK_ViewWindow* svtk = dynamic_cast<SVTK_ViewWindow*>( window ) ) {
if ( vtkRenderer* ren = svtk->getRenderer()) {
#ifndef DISABLE_VTKVIEWER
if ( SVTK_ViewWindow* svtk = dynamic_cast<SVTK_ViewWindow*>( window ) ) {
if ( vtkRenderer* ren = svtk->getRenderer()) {