vtkObject superclass for _all_ VTK-classes?

[Ken Martin]

vtkTimeStamp and vtkIndent are not subclasses of vtkObject because they are 
ivars of vtkObject. I belive all other objects will be subclasses. The only 
reason they wouldn't be is if they are an ivar of vtkObject which leads to 
an infinite loop of some sort. Any class which can be instantiated from a 
wrapped language (Tcl/Java/Python) must be a subclass of vtkObject so you 
are safe to assume future objects will be subclasses as well.

- Ken


 > >as far as I can tell, it is the base class for ALL VTK classes, at least
> > >for all classes used in a vis. pipeline.
> >
> > The only classes I've noticed recently that aren't derived from vtkObject
> > are things like vtkTimeStamp and other small helper classes, and as you
> > correctly state, they're not part of the "main" pipeline.
> >
> > >is this true? if so, what guarantee (if any) do I have that this will
> > >continue to be true in the future?

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