Remarks
ClassWizard and AppWizard insert specially formatted comment delimiters in your source code files to mark the places in your files that ClassWizard can write to. AFX_DATA is used to mark the beginning and end of member variable declarations in your header file (.H) used for dialog data exchange (DDX):
//{{AFX_DATA(classname)
...
//}}AFX_DATA
For more information, see AFX_DATA_MAP and AFX_DATA_INIT.