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Q153292: FIX: Compiler Errors with COleDateTime::Format

Article: Q153292
Product(s): Microsoft C Compiler
Version(s): winnt:4.0,4.1
Operating System(s): 
Keyword(s): kbAutomation kbDateTime kbMFC kbVC400bug kbVC410bug kbVC420fix kbDSupport kbGrpDSMFCATL
Last Modified: 06-MAY-2001

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

- The Microsoft Foundation Classes (MFC), used with:
   - Microsoft Visual C++, 32-bit Editions, versions 4.0, 4.1 
-------------------------------------------------------------------------------

SYMPTOMS
========

When calling the COleDateTime::Format member function with VAR_DATEVALUEONLY or
VAR_TIMEVALUEONLY, you will get the following compiler error:

  

  error C2668: 'Format' : ambiguous call to overload function (new
                          behaviour; please see help)

CAUSE
=====

The problem is caused by not defining VAR_DATEVALUEONLY and VAR_TIMEVALUEONLY as
DWORD in Oleauto.h.

RESOLUTION
==========

The workaround is to type cast these constants to DWORD.

STATUS
======

Microsoft has confirmed this to be a bug in the Microsoft products listed at the
beginning of this article. This problem was corrected in Visual C++ version 4.2.

Additional query words: kbVC400bug vcfixlist420 MfcOLE

======================================================================
Keywords          : kbAutomation kbDateTime kbMFC kbVC400bug kbVC410bug kbVC420fix kbDSupport kbGrpDSMFCATL kbNoUpdate 
Technology        : kbAudDeveloper kbMFC
Version           : winnt:4.0,4.1
Issue type        : kbbug
Solution Type     : kbfix

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