Sub MFDataSet( _
   ByVal _bsDataID As String, _
   ByVal _cbANCData As Integer, _
   ByVal _pbANCData As Long _
) 

void MFDataSet( 
   string _bsDataID,
   int _cbANCData,
   long _pbANCData
)

procedure MFDataSet( 
    _bsDataID: String;
    _cbANCData: Integer;
    _pbANCData: Int64
); 

void MFDataSet( 
   BSTR* _bsDataID,
   int _cbANCData,
   long _pbANCData
) 

Parameters

_bsDataID

four char code

_cbANCData

ancillary data's size

_pbANCData

ancillary data's pointer

Reference

IMFFrame Interface
IMFFrame Members