>Olaf --
>
>This seems like a very powerful tool, but a beast to implement.

This is the stuff on Christoph's side I was referring to

>Am I reading it correctly that you have to
>(1) modify all the base classes (is there any way to do this other than manually adding all those properties and methods?)
>(2) rename all the INIT methods to DOINIT (again, any non-manual way to do this?)

Working with prg's would make this much less of a burden - but for vcx you could write a little builder to add the stuff to you base classes. Probably even better would be to create another layer just for this checking between you base classes annd the vfp classes: during development run the safe classes and for deployment redirect the parentclass of your base classes to vfp base classes (simple replace-statement in the vcx <g>)

HTH

thomas