pb (PVOID) - input

The base virtual address of the private or shared memory object whose reference is to be freed.

ulrc (APIRET) - returns

Return Code.

DosFreeMem returns one of the following values:

• NO_ERROR 5
  ERROR_ACCESS_DENIED
  95
  ERROR_INTERRUPT
  487
  ERROR_INVALID_ADDRESS
  For a full list of error codes, see Errors.