vtkusers,您好! vtkusers,hi I want to derive a class from VTK class in VC++,but it produce a lot of linking error . for example .I derive a class(named vtkmyObject) from vtkObject in VC++,but it produces following error. Can you tell me how to derive my own class from vtk? thanks for your help. 致 礼! bxb1280 bxb1280 at yahoo.com 2002-03-09