void CDeviceScan::EnumAllDevices()
  

  {
  

  HDEVINFO        hDevInfo         = 0L;
  

  SP_DEVINFO_DATA spDevInfoData    = {0};
  

  short           wIndex           = 0;
  

  TCHAR            szSetupClass[MAX_PATH] = {0};
  

  int             wImageIdx       = 0;
  

  

  hDevInfo = SetupDiGetClassDevs(0L, 0L, NULL, DIGCF_PRESENT |
  

  DIGCF_ALLCLASSES | DIGCF_PROFILE);
  

  if (hDevInfo == (void*)-1)
  

  {
  

  return;
  

  }
  

  

  wIndex = 0;
  

  spDevInfoData.cbSize = sizeof(SP_DEVINFO_DATA);
  

  while (1)
  

  {
  

  if (SetupDiEnumDeviceInfo(hDevInfo,
  

  wIndex,
  

  &spDevInfoData))
  

  {
  

  TCHAR  szBuf[MAX_PATH] = {0};
  

  short wItem           = 0;
  

  

  if (!SetupDiGetDeviceRegistryProperty(hDevInfo,
  

  &spDevInfoData,
  

  SPDRP_CLASS, //SPDRP_CLASS,
  

  0L,
  

  (PBYTE)szSetupClass,
  

  MAX_PATH,
  

  0))
  

  {
  

  wIndex++;
  

  continue;
  

  }
  

  

  if (!IsInBlackList(szSetupClass))
  

  {
  

  

  if (SetupDiGetClassImageIndex(&m_spImageData,
  

  &spDevInfoData.ClassGuid,
  

  (int*)&wImageIdx))
  

  {
  

  TCHAR                   szName[128]      = {0};
  

  TCHAR                   szID[LINE_LEN]  = {0};
  

  TCHAR                   szPath[MAX_PATH] = {0};
  

  DWORD                  dwRequireSize;
  

  short                  wOrder;
  

  

  if (!SetupDiGetClassDescription(&spDevInfoData.ClassGuid,
  

  szBuf,
  

  MAX_PATH,
  

  &dwRequireSize))
  

  {
  

  

  wIndex++;
  

  continue;
  

  }
  

  

  wOrder = FindDeviceOrder(szBuf);
  

  if (!AddNewDeviceOrderNode(szBuf, wImageIdx))
  

  {
  

  wIndex++;
  

  continue;
  

  }
  

  

  GetDeviceInstanceID(hDevInfo, &spDevInfoData, szID);
  

  GetDeviceInterfaceInfo(hDevInfo, spDevInfoData, szPath);
  

  

  if (SetupDiGetDeviceRegistryProperty(hDevInfo,
  

  &spDevInfoData,
  

  SPDRP_FRIENDLYNAME,
  

  0L,
  

  (PBYTE)szName,
  

  127,
  

  0))
  

  {
  

  AddNewDeviceNode(spDevInfoData.ClassGuid, szName, szID, szPath, wIndex, wImageIdx, wOrder, szSetupClass,szBuf);
  

  }
  

  else if (SetupDiGetDeviceRegistryProperty(hDevInfo,
  

  &spDevInfoData,
  

  SPDRP_DEVICEDESC,
  

  0L,
  

  (PBYTE)szName,
  

  127,
  

  0))
  

  {
  

  AddNewDeviceNode(spDevInfoData.ClassGuid, szName, szID, szPath, wIndex, wImageIdx, wOrder, szSetupClass,szBuf);
  

  }
  

  else
  

  {
  

  DWORD dError = GetLastError();
  

  }
  

  }
  

  }
  

  }
  

  else
  

  {
  

  DWORD dError = GetLastError();
  

  break;
  

  }
  

  wIndex++;
  

  }
  

  

  SetupDiDestroyDeviceInfoList(hDevInfo);