/* 
 This example queries and displays the maximum length for a path name and the total amount of physical 
 memory in bytes. 
*/
 #define INCL_DOSMISC       /* DOS Miscellaneous values */
 #define INCL_DOSERRORS     /* DOS Error values         */
 #include <os2.h>
 #include <stdio.h>

int Max_QSV = 0;
 
 int main(VOID)  {
   
   ULONG   aulSysInfo[QSV_MAX+32] = {0};       /* System Information Data Buffer */
   APIRET  rc                  = NO_ERROR;  /* Return code                    */
   int i;
   
   for(i = QSV_MAX+32; i > 0; i--)
   {    rc = DosQuerySysInfo(1L,           /* Request all available system   */
                            i,            /* information                    */
                            (PVOID)aulSysInfo,
                            sizeof(ULONG)*(i));
        if (rc != NO_ERROR)
        {  if(rc == ERROR_INVALID_PARAMETER) continue;
           printf("DosQuerySysInfo error: return code = %u\n", rc);
           return 1;
        }
        Max_QSV = i;
        break;
   } 
   printf("Max_QSV=%i\n",Max_QSV);

      printf(" 1 Maximum length for a path name is %u characters.\n",
              aulSysInfo[QSV_MAX_PATH_LENGTH-1]);  /* Max length of path name */
 
      printf(" 2 Maximum number of text sessions\t %u\n",   aulSysInfo[QSV_MAX_TEXT_SESSIONS-1]); 
      printf(" 3 Maximum number of PM sessions  \t %u\n",   aulSysInfo[QSV_MAX_PM_SESSIONS-1]); 
      printf(" 4 Maximum number of DOS sessions \t %u\n",   aulSysInfo[QSV_MAX_VDM_SESSIONS-1]); 
      printf(" 5 Boot drive (1 means A, 2 - B,) \t %u\n",   aulSysInfo[QSV_BOOT_DRIVE-1]); 
      printf(" 6 Dynamic priority variation flag\t %u\n",   aulSysInfo[QSV_DYN_PRI_VARIATION-1]); 
      printf(" 7 Maximum wait in seconds\t\t %u\n",   aulSysInfo[QSV_MAX_WAIT -1]); 
      printf(" 8 Minimum time slice in millisec \t %u\n",   aulSysInfo[QSV_MIN_SLICE-1]); 
      printf(" 9 Maximum time slice in millisec \t %u\n",   aulSysInfo[QSV_MAX_SLICE-1]); 
      printf("10 Memory page size in bytes      \t %u\n",   aulSysInfo[QSV_PAGE_SIZE-1]); 
      printf("11 Major version number           \t %u\n",   aulSysInfo[QSV_VERSION_MAJOR -1]); 
      printf("12 Minor version number           \t %u\n",   aulSysInfo[QSV_VERSION_MINOR -1]); 
      printf("13 Revision number                \t %u\n",   aulSysInfo[QSV_VERSION_REVISION -1]); 
      printf("14 Value of a 32-bit, millisecond counter %u\n",   aulSysInfo[QSV_MS_COUNT -1]); 
      printf("15 Low-order  32 bits of the time in seconds since January 1, 1970 %u\n",   aulSysInfo[QSV_TIME_LOW -1]); 
      printf("16 Hihg-order 32 bits of the time in seconds since January 1, 1970 %u\n",   aulSysInfo[QSV_TIME_HIGH -1]); 
      printf("17 Total physical memory in bytes \t %u\n",   aulSysInfo[QSV_TOTPHYSMEM -1]); 
      printf("18 Total resident memory in bytes \t %u\n",   aulSysInfo[QSV_TOTRESMEM -1]); 
      printf("19 Maximum number of bytes of memory that can\n"
             "   be allocated by all processes in the system %u\n",   aulSysInfo[QSV_TOTAVAILMEM -1]); 
      printf("20 Maximum number of bytes of memory that this\n"
             "   process can allocate in its private arena.  %u\n",   aulSysInfo[QSV_MAXPRMEM -1]); 
      printf("21 Maximum number of bytes of memory that a process\n"
             "   can allocate in the shared arena.\t%u\n",   aulSysInfo[QSV_MAXSHMEM -1]); 
      printf("22 Timer interval in tenths of a millisecond  %u\n",   aulSysInfo[QSV_TIMER_INTERVAL -1]); 
 
      printf("23 Maximum length, of one component in a path name %u\n",   aulSysInfo[QSV_MAX_COMP_LENGTH -1]); 
      printf("24 Session ID of the current foreground full-screen session %u\n",   aulSysInfo[QSV_FOREGROUND_FS_SESSION -1]); 
      printf("25 Process ID of the current foreground process %u\n",   aulSysInfo[QSV_FOREGROUND_PROCESS -1]); 

      printf("26 Number of processors in the machine  \t%u\n",   aulSysInfo[QSV_NUMPROCESSORS -1]); 
    if(Max_QSV >= 27)  
      printf("27 Maximum amount of free space in process's high private arena\t%u\n",  aulSysInfo[QSV_MAXHPRMEM -1]); 
    if(Max_QSV >= 28)  
      printf("28 Maximum amount of free space in process's high shared arena\t%u\n",   aulSysInfo[QSV_MAXHSHMEM -1]); 
    if(Max_QSV >= 29)  
      printf("29 Maximum number of concurrent processes supported \t%u\n",   aulSysInfo[QSV_MAXPROCESSES -1]); 
    if(Max_QSV >= 30)  
      printf("30 Size of the user's address space in megabytes \t%u\n",   aulSysInfo[QSV_VIRTUALADDRESSLIMIT -1]); 
    if(Max_QSV >= 31)  
      printf("31 INT10ENABLED \t%u\n",   aulSysInfo[QSV_INT10ENABLED -1]); 

      for(i=32; i<= Max_QSV; i++)
      {  printf("%i Secret par \t%u\n", i,  aulSysInfo[i -1]); 
      }  
    return NO_ERROR;
 }