Date Time Picker Problem

I used a Date Time Picker control & mapped value to CTime. The default value in the control when I run the app is 12/31/69. Works fine until I change the date in the control. Then get ASSERT failure. I traced the code after returning from DoModal(). MFC calls DoDataExchange() which calls DDX_DateTimeCtrl(pDX, IDC_DATETIMEPICKER, m_tDate); (m_tDate is dialog variable of type CTime. Assert fails when CTime constructor in MFC's file TimeCore.cpp is called at Line 40 . . . ASSERT(m_time != -1);. Any ideas. Thanks very much for anyone's input.
PS. I just learned that it fails only when I change the month or day. I can change the year without the assert failure. (?)

CTime is defined only between the first strike of new year of 1970 and the time bomb explodes on Jan. 18, 2038. I would avoid using CTime in my program.

When your control is initialized to Dec. 31, 1969, any slight change to the month or day yields a date value that's beyond the valid definition range of CTime. I would be surprised if that didn't cause problem.

Don't use MFC's DDX. Do your own. And use COleDateTime instead.


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Anthony,
Thanks! You were right. Any date in 1969 is invalid & the assert failure is triggered. Will experiment with the COleDateTime class. I haven't used any Ole controls. Thanks again for your quick reply.
Trader

One more question. When you say, "Don't use MFC's DDX. Do your own." . . . do you still call the applicable DDX??? function from within the DoDateExchange function wrote by the AppWizard? Do I just call it outside of the /{{AFX_DATA_MAP labels? Thanks again.