Solved that problem. first i delete the vtkImageViewer2, and next i recreate the vtkImageViewer2, i think this method not good. -- View this message in context: http://vtk.1045678.n5.nabble.com/How-to-clear-vtkImageViewer2-window-tp3307592p3308868.html Sent from the VTK - Users mailing list archive at Nabble.com.