BLUETOOTH_DEVICE_SEARCH_PARAMS*SearchParam=new BLUETOOTH_DEVICE_SEARCH_PARAMS();
  SearchParam->dwSize=sizeof(BLUETOOTH_DEVICE_SEARCH_PARAMS);
  SearchParam->fReturnAuthenticated=true;
  SearchParam->fReturnRemembered=true;
  SearchParam->fReturnUnknown=true;
  SearchParam->fReturnConnected=true;
  SearchParam->fIssueInquiry=true;
  SearchParam->cTimeoutMultiplier= 10 ;
  SearchParam->hRadio=NULL;

  BLUETOOTH_DEVICE_INFO*DevInfo=new BLUETOOTH_DEVICE_INFO();
  DevInfo->dwSize=sizeof(BLUETOOTH_DEVICE_INFO);


  BluetoothFindFirstDevice(SearchParam,DevInfo);
    LPVOID lpMsgBuf;
    FormatMessage(FORMAT_MESSAGE_ALLOCATE_BUFFER|FORMAT_MESSAGE_FROM_SYSTEM,NULL,
    GetLastError(),MAKELANGID(LANG_NEUTRAL,SUBLANG_DEFAULT),(LPTSTR)&lpMsgBuf, 0 ,NULL);
    MessageBox( NULL,(char*)lpMsgBuf, "GetLastError", MB_OK|MB_ICONINFORMATION );
    LocalFree( lpMsgBuf );
  Caption=DevInfo->szName;