Q131945: FIX: OnFileNameOK Returns 0 if Valid or 1 if Not Valid

Article: Q131945
Product(s): Microsoft C Compiler
Version(s): winnt:
Operating System(s): 
Keyword(s): kbdocfix kbdocerr kbFileIO kbMFC kbVC150bug kbVC151bug kbVC152bug kbVC200bug kbVC210bug
Last Modified: 06-MAY-2001

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The information in this article applies to:

- The Microsoft Foundation Classes (MFC), used with:
   - Microsoft Visual C++ for Windows 
   - Microsoft Visual C++ 32-bit Edition, versions 1.0, 2.0, 2.1, 4.0, 4.1 
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SYMPTOMS
========

The following incorrect text appears in the online documentation for the
function CFileDialog::OnFileNameOK() and in Books Online:

  Return Value
  Nonzero if the filename is a valid filename, otherwise 0.

It should be:

  Return Value
  1 if the filename is NOT a valid filename, otherwise 0.

STATUS
======



MORE INFORMATION
================

CFileDialog::OnFilenameOK() is a virtual function that can be overridden to
handle the private message FILEOKSTRING. When handling this message, the MFC
common dialog hook function calls OnFileNameOK() and returns to the common
dialog procedure whatever the virtual function returns. The dialog procedure in
COMDLG32.DLL (or COMMDLG.DLL in 16-bit programs) dismisses the dialog if the
return from the hook function is 0 (zero) and keeps the dialog displayed if the
return value is 1 (one). Other nonzero return values are currently reserved and
should not be used.

This documentation error was corrected in Visual C++ 32-bit Edition version 4.2.

Additional query words: kbVC400bug 2.50 2.51 3.00 3.10 4.20

======================================================================
Keywords          : kbdocfix kbdocerr kbFileIO kbMFC kbVC150bug kbVC151bug kbVC152bug kbVC200bug kbVC210bug kbVC400bug kbVC410bug kbVC420fix 
Technology        : kbAudDeveloper kbMFC
Version           : winnt:
Issue type        : kbbug
Solution Type     : kbfix

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