[vtkusers] [gdcm2] vtkGDCMImageReader update progress

[Bartosz Wiklak]

Hi,

I'm using vtkGDCMImageReader. When I add many files through
SetFileNames() and then call Update() it takes long time to process.
How can I implement progress indication? Can I connect some kind of
observer to the vtkGDCMImageReader?

Bartek