Cómo obtener física y memoria virtual con la llamada de función de API

   * Declare API function to retrieve memory information.
   DECLARE GlobalMemoryStatus IN Win32API STRING @MemStat

   #DEFINE CR CHR(13)

   * long2str is passed a dwLength of 32; since structure is 32 bytes long.
   * long2str is appended to a 28 byte blank buffer; a total of 32 bytes.
   m.stru = long2str(32) + REPLICATE(CHR(0), 28)
   =GlobalMemoryStatus(@m.stru)

   * dwLength is 4 bytes, start extracting members at byte 5.
   * Each member is 4 bytes long.
   m.memoryload    = str2long(SUBSTR(m.stru, 5, 4))
   m.totalphys     = str2long(SUBSTR(m.stru, 9, 4))
   m.availphys     = str2long(SUBSTR(m.stru, 13, 4))
   m.totalpagefile = str2long(SUBSTR(m.stru, 17, 4))
   m.availpagefile = str2long(SUBSTR(m.stru, 21, 4))
   m.totalvirtual  = str2long(SUBSTR(m.stru, 25, 4))
   m.availvirtual  = str2long(SUBSTR(m.stru, 29, 4))

   =MESSAGEBOX("Percent memory in use: " + STR(m.memoryload) + CR + ;
   "Bytes of physical memory present: " + STR(m.totalphys) + CR + ;
   "Bytes available physical memory: " + STR(m.availphys) + CR + ;
   "Bytes of paging file: " + STR(m.totalpagefile) + CR + ;
   "Bytes available paging file: " + STR(m.availpagefile) + CR + ;
   "Total virtual memory: " + STR(m.totalvirtual) + CR + ;
   "Available bytes virtual memory: " + STR(m.availvirtual), ;
    0 + 64 + 0, ;
   "GlobalMemoryStatus() results")


   *******************************************************************
   FUNCTION long2str
   *******************************************************************
   * passed : 32-bit non-negative numeric value (m.longval).
   * returns : ASCII character representation of passed value in
   *           low-high format (m.retstr).
   * example :
   *    m.long = 999999
   *    m.longstr = long2str(m.long)

   PARAMETERS m.longval

   PRIVATE i, m.retstr

   m.retstr = ""
   FOR i = 24 TO 0 STEP -8
   m.retstr = CHR(INT(m.longval/(2^i))) + m.retstr
   m.longval = MOD(m.longval, (2^i))
   NEXT
   RETURN m.retstr

   *******************************************************************
   FUNCTION str2long
   *******************************************************************
   * passed:  4-byte character string (m.longstr) in low-high ASCII format.
   * returns: Long integer value.
   *
   * example:
   *   m.longstr = "1111"
   *   m.longval = str2long(m.longstr)

   PARAMETERS m.longstr

   PRIVATE i, m.retval

   m.retval = 0
   FOR i = 0 TO 24 STEP 8
   m.retval = m.retval + (ASC(m.longstr) * (2^i))
   m.longstr = RIGHT(m.longstr, LEN(m.longstr) - 1)
   NEXT
   RETURN m.retval
   * End of GlobalMemoryStatus code