[vtkusers] Exporting the render window contents as a PNG file

[Luca Pamparana]

Hello,

I have a small VTK program which runs an animation and at each
animation step, I would like to save the current state as a PNG file.

How do I save the render window contents as a PNG or other format? is
there a simple VTKish way to do it?

Thanks,

Luc