Moves the current seek offset.
HRESULT retVal = object.Seek(dlibMove, dwOrigin, plibNewPosition);
A large integer value that indicates how far to move the offset.
A DWORD value that indicates where the move begins.
The starting point is zero or the beginning of the file. If FILE_BEGIN is specified, dlibMove is interpreted as an unsigned location for the new file pointer.
The current value of the file pointer is the starting point.
The current end-of-file position is the starting point. This method fails if the content length is unknown.
The address of an unsigned long integer value that indicates the new offset.