I'll configure vtk with vs2010 win64 as generator & check use_Qt. If there is no error so can I assume that Qt was successfully build in 64 bits??? -- View this message in context: http://vtk.1045678.n5.nabble.com/QT-VTK-ITK-64bit-version-tp5724685p5724713.html Sent from the VTK - Users mailing list archive at Nabble.com.