Hello, vtkUsers! Wonder what was the reason some cpp samples are gone in VTK 5.0.4, ex visQuad.cxx (3.2.0): http://www.cs.umu.se/kurser/TDBD13/VT02/vtk/html/page_ex1.html Prefer to play with code not to translate from tcl. Ready to share vc8.0 projects. Regards, Gennady