I checked Valgrind's website. Windows is not supported. Are you aware of similar one but for Windows? Ahmad -- View this message in context: http://vtk.1045678.n5.nabble.com/To-use-vtkSmartPointer-or-not-to-use-Memory-Leak-tp5716501p5716514.html Sent from the VTK - Users mailing list archive at Nabble.com.