Hi gishu- I've been able to get this working and I did something to break it and I'm having the same problem as you now- did you figure out what this problem was? -- View this message in context: http://vtk.1045678.n5.nabble.com/Integrate-VTKDlg-with-MFC-App-tp5643463p5713625.html Sent from the VTK - Users mailing list archive at Nabble.com.