[vtkusers] question about IsTypeOf

[Lederer, Maitland]

Hey everyone-

I'm using a vtkPropPicker, and I'd like to use IsTypeOf to determine
whether the picked prop is of type vtkProp3D.  Well, I was using the Tcl
interactor to determine what all was in my PropCollection and typed in
the following:

> sliceAct10 IsTypeOf "vtkProp"

To which I got the response 0.  I found this rather odd, as
vtkPropPicker seems to be picking this vtkOpenGLImageActor just fine.
So I tried a few other things, only to discover that 

> sliceAct10 IsTypeOf "vtkObject"

Also yields 0, and the only thing that sliceAct10 (or anything else in
my world) seems to be is a vtkObjectBase.  Has anybody else had this
problem?  Am I doing something wrong here?

Thanks,
-M

**************************
M. Maitland Lederer
Staff Engineer 
Foster-Miller, Inc.
(781)684-4618