Important It is recommended that you use DFX_Binary instead of this function.
void AFXAPI DFX_LongBinary( CDaoFieldExchange* pFX, LPCTSTR szName, CLongBinary& value, DWORD dwPreAllocSize = AFX_DAO_LONGBINARY_DEFAULT_SIZE, DWORD dwBindOptions = 0 );
DFX_LongBinary is provided for compatibility with the MFC ODBC classes. The DFX_LongBinary function transfers binary large-object (BLOB) data using class CLongBinary between the field data members of a CDaoRecordset object and the columns of a record on the data source. Data is mapped between type DAO_BYTES in DAO and type CLongBinary in the recordset.