Q235355: PRB: CMonthCalCtl::GetCurSel(CTime) Returns Wrong Value

Article: Q235355
Product(s): Microsoft C Compiler
Version(s): winnt:6.0
Operating System(s): 
Keyword(s): kbCmnCtrls kbCtrl kbDateTime kbMFC kbMonthCalCtrl kbVC600 kbDSupport kbGrpDSMFCATL
Last Modified: 03-MAY-2001

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The information in this article applies to:

- The Microsoft Foundation Classes (MFC), included with:
   - Microsoft Visual C++, 32-bit Enterprise Edition, version 6.0 
   - Microsoft Visual C++, 32-bit Professional Edition, version 6.0 
   - Microsoft Visual C++, 32-bit Learning Edition, version 6.0 
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SYMPTOMS
========

When you use the CMonthCalCtrl::GetCurSel(CTime) to get the date selected from
the Month Calendar Common control, the date in the CTime class is incorrect.

CAUSE
=====

MFC's implementation of CMonthCalCtrl::GetCurSel() for the CTime class calls
SendMessage(MCM_GETCURSEL, &sysTime) where sysTime is a SYSTEMTIME
structure. The MCM_GETCURSEL message does not fill in the hours, minutes, and
seconds part of the sysTime Structure with valid values. However, the
constructor for CTime class takes these values into consideration, so the date
in CTime class is incorrect.

RESOLUTION
==========

The workaround is to use the CMonthCalCtrl::GetCurSel(SYSTEMTIME*) version of
GetCurSel for this class to get the correct date. The code will look like the
following example:

     SYSTEMTIME sysTime;

     m_MonthCal.GetCurSel(&sysTime);

     sysTime.wHour = sysTime.wMinute = sysTime.wSecond =    sysTime.wMilliseconds = 0;
    
     CTime l_time(sysTime);

STATUS
======

This behavior is by design.

Additional query words:

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Keywords          : kbCmnCtrls kbCtrl kbDateTime kbMFC kbMonthCalCtrl kbVC600 kbDSupport kbGrpDSMFCATL 
Technology        : kbAudDeveloper kbMFC
Version           : winnt:6.0
Issue type        : kbprb

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