DDX_OCBool
Visual Studio 2012
The DDX_OCBool function manages the transfer of BOOL data between a property of an OLE control in a dialog box, form view, or control view object and a BOOL data member of the dialog box, form view, or control view object.
void AFXAPI DDX_OCBool( CDataExchange* pDX, int nIDC, DISPID dispid, BOOL& value );
For more information about DDX, see Dialog Data Exchange and Validation.