[vtkusers] how to correctly subclass vtkActor?

[José Eduardo Meireles]

Hi All,
I already posted this question here a couple days ago:
http://stackoverflow.com/questions/20945017/how-to-subclass-vtkactor

//.h
#include <vtkActor.h>
#include <vtkObjectFactory.h>

class Node;

struct Actor : public vtkActor {
    static Actor* New();
    vtkTypeMacro(Actor, vtkActor)

    //my ptr
    Node* holding_node;
};

//.cpp
#include "actor.h"
vtkStandardNewMacro(Actor)


How do I properly subclass vtkActor? I have used the code below and it
compiles fine, but I cannot get it to render.
Any ideas or recommended readings?

thanks!