AddRef Clone Commit CopyTo CwclStreamAdapter GetStream GetStreamOwnership LockRegion QueryInterface Read Release Revert Seek SetSize SetStreamOwnership Stat UnlockRegion Write ~CwclStreamAdapter

LockRegion() virtual HRESULT STDMETHODCALLTYPE LockRegion ( ULARGE_INTEGER  libOffset, ULARGE_INTEGER  cb, DWORD  dwLockType  ) overridevirtual The method restricts access to a specified range of bytes in the stream. Supporting this functionality is optional since some file systems do not provide it. Parameters libOffset Integer that specifies the byte offset for the beginning of the range. cb Integer that specifies the length of the range, in bytes, to be restricted. dwLockType Specifies the restrictions being requested on accessing the range. Returns S_OK if operation completed with success.