Pass values throught InvokeEvent callback

[lassoan (Andras Lasso)]

@dgobbi

jcfr implemented parts of the python event code and he might be able to answer.

Thank you, I think @Ennio_Bolondi figured it out.

@Ennio_Bolondi

I was wondering if there is a way to pass an Object

You can pass any objects derived from vtkObject.

If you want to pass custom Python objects, then you can serialize it to string: create a json representation manually; or use pickle to get a byte array and convert to string using base-64 encoding.