Note
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Gets or sets the index of a list box on an HTML page.
void DDX_DHtml_SelectIndex( 
   CDataExchange* pDX, 
   LPCTSTR szId, 
   long& value  
);
Parameters
- pDX 
 A pointer to a CDataExchange object.
- szId 
 The value that you specified for the HTML control's id parameter.
- value 
 The value being exchanged.
Requirements
Header: afxdhtml.h