Call this function in your property page's DoDataExchange function to synchronize the value of the property with the associated property page check box control.
void AFXAPI DDP_Check(
   CDataExchange*pDX,
   int id,
   int &member,
   LPCSTR pszPropName 
);
Parameters
- pDX 
 Pointer to a CDataExchange object. The framework supplies this object to establish the context of the data exchange, including its direction.
- id 
 The resource ID of the check box control associated with the control property specified by pszPropName.
- member 
 The member variable associated with the property page control specified by id and the property specified by pszPropName.
- pszPropName 
 The property name of the control property to be exchanged with the check box control specified by id.
Remarks
This function should be called before the corresponding DDX_Check function call.
Requirements
Header: afxctl.h