I am developing an application using Visual Studio.NET 2003 in C++ on XP
Professional.

I need to do a deep copy (recursive) in the Registry from HKEY_LOCAL_MACHINE
to HKEY_CURRENT_USER.  I have tried using the shell function SHCopyKey()
(from shlwapi.dll version 6.0.2800.1552) without success.  It appears to do
nothing and returns no error.

I have experimented with a variety of things (creating the registry key
before doing the copy, flushing the registry key afterward, etc).  I open the
source registry key for 'read' and the destination registry key for 'write'
beforehand.  I'm logged in and running as an Administrator.

It will be painful to have to do the deep copy recursively myself.

Am I missing something that prevents SHCopyKey() from working?
Is there a different function that does the recursive deep copy that I can
use?

Thanks,
Dave