[vtkusers] retrieving object class type....

[Giancarlo Amati]

Hello everybody,

I have this problem: i have a vtkActorCollection list which refers to a set of actor displaied in my window.
I wonder if there is a way of retrieving the class type they belongs, I mean.....

if I have a 

vtkActor obj and 
vtkImageActor img

how can I understand from the vtkActorCollection what kind of objects i get using the GetNextItem()?

Kind Regards.
Giancarlo

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