[vtkusers] vtkXMLImageDataWriter and ProgressEvent

[Paulo Henrique Junqueira Amorim]

Hi,

It is possible to know the progress of writing a file with the
vtkXMLImageDataWriter and reading with the vtkXMLImageDataReader ?

I'm using:

    writer.AddObserver("ProgressEvent", lambda obj, evt: MyFunction)

But he is not calling MyFunction.

Regards,
Paulo Amorim
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