Q153282: FIX: ClassWizard Overrides CDaoRecordset::Open Incorrectly

Article: Q153282
Product(s): Microsoft C Compiler
Version(s): 4.00 4.10
Operating System(s): 
Keyword(s): kbDAOsearch kbDatabase kbMFC kbVC kbVC420fix
Last Modified: 04-AUG-2001

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

- The ClassWizard, included with:
   - Microsoft Visual C++, 32-bit Editions, versions 4.0, 4.1 
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SYMPTOMS
========

If you override the CDaoRecordset::Open() function using ClassWizard, the new
function will never be called.

CAUSE
=====

The Wizard places an UINT type for the first parameter rather than an int. The
code should read:

  virtual void Open(int ...)

rather than:

  virtual void Open(UINT...)

RESOLUTION
==========

Change the type of the first parameter in your Open() function from UINT to

int in the .h and .cpp files.

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.

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

Sample Code
-----------

The following sample code shows the correct function prototype for a
CDaoRecordset-derived class named CMySet:

     // CMySet.H:
     virtual void Open(int nOpenType = AFX_DAO_USE_DEFAULT_TYPE,
             LPCTSTR lpszSql = NULL, int nOptions = 0);
     // CMySet.CPP:
     void CMySet::Open(int nOpenType, LPCTSTR lpszSql, int nOptions)
     {
         // TODO: Add your specialized code here and/or call the base class
         CDaoRecordset::Open(nOpenType, lpszSql, nOptions);
     }

Additional query words: kbVC400bug

======================================================================
Keywords          : kbDAOsearch kbDatabase kbMFC kbVC kbVC420fix 
Technology        : kbVCsearch kbAudDeveloper kbClassWizard
Version           : 4.00 4.10
Issue type        : kbbug
Solution Type     : kbfix

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