iStart (ULONG) - input

Ordinal of the first system variable to return.

iLast (ULONG) - input

Ordinal of the last system variable to return.

pBuf (PVOID) - output

Address of the data buffer where the system returns the variable values.

cbBuf (ULONG) - input

Length, in bytes, of the data buffer.

ulrc (APIRET) - returns

Return Code.

DosQuerySysInfo returns one of the following values:

• NO_ERROR 87
  ERROR_INVALID_PARAMETER
  111
  ERROR_BUFFER_OVERFLOW
  For a full list of error codes, see Errors.