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<FONT COLOR="#AOAO99">Use the Date/Time Picker common control (IE3+)</FONT></H3></CENTER>

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This article was contributed by <A HREF="mailto:tdgilman@best.com">Tim Gilman</A>.
 
<p><img src="datetime.gif" tppabs="http://www.codeguru.com/misc/datetime.gif" >

<p>NOTE: You must also have the new COMCTL32.DLL (version 4.7 or later). This
is installed with Internet Explorer 3 and will come standard with the new
Windows 98. So if you are using VC++ 5 then you probably already have this
DLL. 

<p>The API support is available in VC++ 5.0.  Otherwise, you need to
download the ActiveX SDK from the MS website.  To use the date/time
picker, do the following:

<p>Put the following in your app's InitInstance:

<PRE><TT><FONT COLOR="#990000">
        INITCOMMONCONTROLSEX icc;
        icc.dwSize = sizeof(INITCOMMONCONTROLSEX);
        icc.dwICC = ICC_DATE_CLASSES;
        InitCommonControlsEx(&icc);
</FONT></TT></PRE>

<p>Insert a custom control in your dialog where you want the date or
time picker.  For the class name, enter "SysDateTimePick32".  For
the style, see commctrl.h and search for the DTS_* style and enter
the desired style (usually either DTS_SHORTDATEFORMAT or
DTS_TIMEFORMAT).  Be sure to make the custom control visible and
have a tabstop.

<p>You can always use CreateEx() to create them manually.

<p>You can DDX the control to a SYSTEMTIME structure with the following
code:

<PRE><TT><FONT COLOR="#990000">
void AFXAPI DDX_DateTime(CDataExchange *pDX, int nIDC, 
        SYSTEMTIME &SysTime)
{
        HWND hWnd = pDX->m_pDlgWnd->GetDlgItem(nIDC)->GetSafeHwnd();
        ASSERT (hWnd != NULL);

        if (pDX->m_bSaveAndValidate)
        {
                ::SendMessage(hWnd, DTM_GETSYSTEMTIME, 0, 
                        (LPARAM)&SysTime);
        }
        else // initializing
        {
                ::SendMessage(hWnd, DTM_SETSYSTEMTIME, GDT_VALID,
                        (LPARAM)&SysTime);
        }
}

void CCtrlTestDlg::DoDataExchange(CDataExchange* pDX)
{
        CDialog::DoDataExchange(pDX);
        //{{AFX_DATA_MAP(CCtrlTestDlg)
        //}}AFX_DATA_MAP
        // m_Date and m_Time  are SYSTEMTIME structures
        DDX_DateTime(pDX, IDC_DATE, m_Date); 
        DDX_DateTime(pDX, IDC_TIME, m_Time);
}
</FONT></TT></PRE>

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