PRB: CMonthCalCtl::GetCurSel(CTime) Returns Wrong Value (235355)

The information in this article applies to:

The Microsoft Foundation Classes (MFC), when used with:
- Microsoft Visual C++, 32-bit Enterprise Edition 6.0
- Microsoft Visual C++, 32-bit Professional Edition 6.0
- Microsoft Visual C++, 32-bit Learning Edition 6.0

This article was previously published under Q235355

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.

Modification Type:	Major	Last Reviewed:	12/11/2003
Keywords:	kbCmnCtrls kbCtrl kbDateTime kbMonthCalCtrl kbprb KB235355