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Q234769: BUG: Unregistering CE ATL Servers Don’t Remove Registry Entries

Article: Q234769
Product(s): Microsoft C Compiler
Version(s): WINDOWS:3.0,6.0
Operating System(s): 
Keyword(s): kbRegistry kbOSWinCEsearch kbATL300bug kbDSupport kbGrpDSMFCATL
Last Modified: 26-JUN-2001

-------------------------------------------------------------------------------
The information in this article applies to:

- Microsoft Windows CE Toolkit for Visual C++ 6.0 
- The Microsoft Active Template Library (ATL) 3.0 
-------------------------------------------------------------------------------

SYMPTOMS
========

If you run "REGSVRCE.exe /U" on an ATL DLL to unregister components or controls
will not clean up the registry. The ProgID and entries under the CLSID will not
be removed.

CAUSE
=====

During unregistration, ATL checks to see if a key has subkeys or values before
deleting it. ATL checks for values by calling CRegParser::HasValues(). Inside
this function, RegEnumValue() is called. Under Win32, RegEnumValue() returns
NULL if the key only has a default value. Under CE, it returns the string
"Default". This causes CRegParser::HasValues() to return TRUE and prevents ATL
from deleting the key.

RESOLUTION
==========

In the function CRegParser::HasValues() in STATREG.h, the following line needs
to be changed from:

  if (ERROR_SUCCESS == lResult && (szValueName[0] != NULL))

to:

  if (ERROR_SUCCESS == lResult && (szValueName[0] != NULL) && lstrcmpi(szValueName, _T("Default")))

You will need to statically link with the registration code by building for
ReleaseMinDependency. To build a debug version, you'll need to add
_ATL_STATIC_REGISTRY to the preprocessor symbols (under Project menu select
Settings in the C++ tab). Make sure to select Rebuild All.

STATUS
======

Microsoft has confirmed this to be a bug in the Microsoft products listed at the
beginning of this article.

MORE INFORMATION
================

Make sure you're modifying the right version of STATREG.h. It should be the one
in the "Windows CE Tools" directory (for example, "\Windows CE Tools\WCE200\MS
HPC\atl\include").

Additional query words: regsvrce unregister

======================================================================
Keywords          : kbRegistry kbOSWinCEsearch kbATL300bug kbDSupport kbGrpDSMFCATL 
Technology        : kbVCsearch kbAudDeveloper kbATLsearch kbATL300 kbWinCETKVCSearch kbWinCESearch kbWinCETK600VC
Version           : WINDOWS:3.0,6.0
Issue type        : kbbug
Solution Type     : kbpending

=============================================================================

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