FIX: Common Dialog Classes Don't Update DDX Member Variables

 Last reviewed: September 18, 1997
Article ID: Q117607
1.00 1.50 | 1.00 
WINDOWS   | WINDOWS NT
kbprg kbfixlist kbbuglist

The information in this article applies to:

  • The Microsoft Foundation Classes (MFC) included with: 

        - Microsoft Visual C++ for Windows, versions 1.0 and 1.5
    - Microsoft Visual C++ 32-bit Edition, version 1.0

SYMPTOMS

If you use classes derived from the common dialog classes (for example CFileDialog) in the MFC, DDX member variables do not get updated when you choose the "OK" button. The reason for this is that the base class "OnOK()", provided for these classes, does not call UpdateData(). For example, CFileDialog::OnOK() does not call UpdateData().

RESOLUTION

The workaround for this is to override OnOK() in your derived class and call UpdateData(). See CDialog::OnOK() in <drive>:\MSVC\MFC\SRC\DLGCORE.CPP for an example of how to set up the code and message-map entry.

STATUS

Microsoft has confirmed this to be a problem in the MFC, versions 2.0 and 2.5. This problem was corrected in MFC version 3.0, included with Visual C++ version 2.0.

Additional reference words: ok button CPrintDialog CColorDialog CFontDialog
1.00 1.50 2.00 2.50 2.10
KBCategory: kbprg kbfixlist kbbuglist
KBSubcategory: MfcMisc
Keywords : MfcMisc kbbuglist kbfixlist kbprg
Technology : kbMfc
Version : 1.00 1.50 | 1.00
Platform : NT WINDOWS
Solution Type : kbfix

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Last reviewed: September 18, 1997
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