ulrc (APIRET) - returns

Return Code.

DosSetPriority returns one of the following values:

• NO_ERROR
  303
  ERROR_INVALID_PROCID
  304
  ERROR_INVALID_PDELTA
  305
  ERROR_NOT_DESCENDANT
  307
  ERROR_INVALID_PCLASS
  308
  ERROR_INVALID_SCOPE
  309
  ERROR_INVALID_THREADID
  For a full list of error codes, see Errors.