[vtkusers] vtkErrorMacro and vtkOutputWindow

[Christopher R. Volpe]

> 
> Since I was the one who recently modified vtkErrorMacro and 
> vtkWarningMacro,
> I will try to help you.
> For me warnings and errors seems to work perfectly.
> 
> First of all, try to write a small program that will generate 
> an error and 
> warning.

I did that already:

vtkTransform t
t SetInput t

The above should generate an error about the attempted circular reference.

> This should generate error.
> Similar way you can generate warning. You will have to grep 
> on the VTK code.
> 
> If this works, then you have problem in your code.

The problem appears to be in vtk. This is vtk4.0, running on Windows 2000. 

-Chris