Public Overridable Sub MFDataGet( _
   ByVal _bsDataID As String, _
   ByRef _pcbANCData As Integer, _
   ByRef _ppbANCData As Long _
) 

public virtual void MFDataGet( 
   string _bsDataID,
   out int _pcbANCData,
   out long _ppbANCData
)

public procedure MFDataGet( 
    _bsDataID: String;
   Out  _pcbANCData: Integer;
   Out  _ppbANCData: Int64
); virtual; 

public: virtual void MFDataGet( 
   BSTR* _bsDataID,
   [PARAMFLAG::Out] int _pcbANCData,
   [PARAMFLAG::Out] long _ppbANCData
) 

Parameters

_bsDataID

four char code

_pcbANCData

ancillary data's size

_ppbANCData

ancillary data's pointer

Reference

MFFrameClass Class
MFFrameClass Members