I'm looking for a single example of vb.net using the IEdmRefCallBack5 Interface

I'm able to implement it and it adds 6 new function and a sub.  I'm able to get dimension an empty pointer and provide it as an argument to the UnlockFile method.

I can't seem to get it to work.  I'm missing something too easy for me to understand.

The documentation is very general and seems to be lacking a key ingredient too.

Any help would be useful.

Kent