[vtkusers] How to use internal classes without all the auto-generated code ?

[Brad King]

> Now, with 4.2 version, my problem is, that there are other
> auto-generated references to it, e.g.  vtkInstatiator* creates
> references to *New which then becomes an unresolved reference at link
> time.

Add this to your cmake code:

SET_SOURCE_FILES_PROPERTIES(vtkMyHelperClass.cxx WRAP_EXCLUDE)

-Brad