computerid.cpp

int MACAddr(TCHAR* buf) {
  IP_ADAPTER_INFO info[16];
  DWORD len = sizeof(info);
  int i = 0;
  int printed = 0;

  int return_code = GetAdaptersInfo(info, &len);
  if (return_code != ERROR_SUCCESS) {
    return 0;
  }

  for(; i<info->AddressLength; i++){
    wsprintf(buf, TEXT("%2x"), info->Address[i]);
    buf += 2;
    printed += 2;
  }
  return printed;
}

void FillSysinfo(TCHAR* buf){
	SYSTEM_INFO s;
	HW_PROFILE_INFO p;

	GetCurrentHwProfile(&p);
	GetSystemInfo(&s);
	// IsProcessorFeaturePresent
  int maclen = MACAddr(buf);

	wsprintf(buf + maclen, TEXT("%s%d%d%u%d%d"),
		p.szHwProfileGuid,
		s.wProcessorArchitecture, s.wProcessorRevision,
		GetLogicalDrives(),
		GetKeyboardType(0), GetKeyboardType(1), GetKeyboardType(2)
		);

	int length = _tcslen(buf);
	for(int i=0; i<length; i++){
		if ( (48 <= buf[i] && buf[i] <= 57) ||//0-9
			(65 <= buf[i] && buf[i] <= 90) ||//abc...xyz
			(97 <= buf[i] && buf[i] <= 122)) //ABC...XYZ
		{
			;
		} else {
			buf[i] = '0';
		}
	}
	return;

}