DOCERR: CHKBOOK.CLW File Documents ExtraDDX Lines Incorrectly

1.00     | 1.00

The information in this article applies to:

• The Microsoft Foundation Classes (MFC), included with:

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

SYMPTOMS

The Microsoft Foundation Class Library Technote #26, provided with Microsoft Visual C++ version 1.0, includes the following statement:

   An example of custom DDX with validation can be found in the
   CHKBOOK sample application. See DDX_DollarsCents in DOLLCENT.CPP
   for an sample implementation of a custom DDX routine and
   CHKBOOK.CLW for the corresponding example ExtraDDXCount and
   ExtraDDX1 entries in the [General Info] section of the .CLW file.

RESOLUTION

To address this situation, append the following lines to the [General Info] section of the CHKBOOK.CLW file:

   ExtraDDXCount=1
   ExtraDDX1=E;;Cents;DWORD;0;DollarsCents;(100*dollars)+cents

STATUS

This documentation error was corrected in MFC for Windows, version 2.5.

MORE INFORMATION

For more information about the ExtraDDXCount and ExtraDDX1 statements, please refer to Technote #26. Note that the ExtraDDX1 statement includes two consecutive semicolon (;) characters to ignore the second field. The Technote does not list the contents of the second field. The Technote states the following:

• The general format of these special entries is:

  ExtraDDXCount=n ; where n is the number of ExtraDDX? lines to follow ExtraDDX?=<keys>;<prompt>;<type>;<initValue>;<DDX_Proc>[;

            <DDV_Proc>;<prompt1>;<arg1>;[<prompt2>;<fmt2>]]
     ; Where ? is a number 1-n indicating which DDX type in the list
     ; that is being defined.
  
  

   ExtraDDX?=<keys>;<vb-keys>;<prompt>;<type>;<initValue>;<DDX_Proc>;
      <comment>[;<DDV_Proc>;<prompt1>;<fmt1>[;<prompt2>;<fmt2>]]