hFile (HFILE) - input

The handle of the file whose buffers are to be written to the disk.

If hFile has a value of 0xFFFFFFFF, all of the buffers for all of the file handles of the process are written to the disk.

ulrc (APIRET) - returns

Return Code.

DosResetBuffer returns one of the following values:

• NO_ERROR 2
  ERROR_FILE_NOT_FOUND
  5
  ERROR_ACCESS_DENIED
  6
  ERROR_INVALID_HANDLE
  For a full list of error codes, see Errors.