BUG: Unregistering CE ATL Servers Don't Remove Registry Entries

ID: Q234769

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 kbWinCE kbATL300bug kbDSupport kbGrpMFCATL
Version : WINDOWS:3.0,6.0
Platform : WINDOWS
Issue type : kbbug