IReadStream インターフェイスの Read メソッド

HRESULT Read(
  SAFEARRAY(BYTE)* Data,
  int              Count,
  int*             BytesRead
);

int Read(
  out byte[] Data,
  int        Count
);

Function Read( _
  ByRef Data() As Byte, _
  ByVal Count As Integer _
) As Integer