Sub MFOverlay( _
   ByVal _pFrameOverlay As Object, _
   ByVal _pFrameMask As Object, _
   ByVal _nPosX As Integer, _
   ByVal _nPosY As Integer, _
   ByVal _dblAlpha As Double, _
   ByVal _bsPropsList As String, _
   ByVal _bsAudioBufferID As String _
) 

void MFOverlay( 
   object _pFrameOverlay,
   object _pFrameMask,
   int _nPosX,
   int _nPosY,
   double _dblAlpha,
   string _bsPropsList,
   string _bsAudioBufferID
)

procedure MFOverlay( 
    _pFrameOverlay: TObject;
    _pFrameMask: TObject;
    _nPosX: Integer;
    _nPosY: Integer;
    _dblAlpha: Double;
    _bsPropsList: String;
    _bsAudioBufferID: String
); 

void MFOverlay( 
   IUnknown* _pFrameOverlay,
   IUnknown* _pFrameMask,
   int _nPosX,
   int _nPosY,
   double _dblAlpha,
   BSTR* _bsPropsList,
   BSTR* _bsAudioBufferID
) 

Parameters

_pFrameOverlay

frame to use as overlay

_pFrameMask

frame to use as maska mask frame

_nPosX

horizontal position

_nPosY

vertical position

_dblAlpha

transparency

_bsPropsList

additional properties

_bsAudioBufferID

audio buffer ID

Reference

IMFFrame Interface
IMFFrame Members