我想和Delphi一起使用Wifi.怎么样？

Question

在我的Delphi(在Windows XP上)程序中,我想查看可用的WiFi网络.你知道怎么做吗？最好的可能是使用MS WlanScan API函数,但我没有找到一个例子.有人能帮我吗？

Answer 1

您可以使用自Windows Vista和Windows XP以来可用的Native Wifi API.不支持旧版本的Windows.

在此链接中,您可以找到标题的非常好的翻译.

我用这些标题编写了这段代码.在Delphi 2007和Windows Vista中测试过.

program DetectWifiUsingDelphi;

{$APPTYPE CONSOLE}

uses
  Windows,
  SysUtils,
  //TypInfo,
  nduWlanAPI   in 'nduWlanAPI.pas',
  nduWlanTypes in 'nduWlanTypes.pas';


function DOT11_AUTH_ALGORITHM_To_String( Dummy :Tndu_DOT11_AUTH_ALGORITHM):String;
begin
    Result:='';
    case Dummy of
        DOT11_AUTH_ALGO_80211_OPEN          : Result:= '80211_OPEN';
        DOT11_AUTH_ALGO_80211_SHARED_KEY    : Result:= '80211_SHARED_KEY';
        DOT11_AUTH_ALGO_WPA                 : Result:= 'WPA';
        DOT11_AUTH_ALGO_WPA_PSK             : Result:= 'WPA_PSK';
        DOT11_AUTH_ALGO_WPA_NONE            : Result:= 'WPA_NONE';
        DOT11_AUTH_ALGO_RSNA                : Result:= 'RSNA';
        DOT11_AUTH_ALGO_RSNA_PSK            : Result:= 'RSNA_PSK';
        DOT11_AUTH_ALGO_IHV_START           : Result:= 'IHV_START';
        DOT11_AUTH_ALGO_IHV_END             : Result:= 'IHV_END';
    end;
End;

function DOT11_CIPHER_ALGORITHM_To_String( Dummy :Tndu_DOT11_CIPHER_ALGORITHM):String;
Begin
    Result:='';
    case Dummy of
    DOT11_CIPHER_ALGO_NONE      : Result:= 'NONE';
    DOT11_CIPHER_ALGO_WEP40     : Result:= 'WEP40';
    DOT11_CIPHER_ALGO_TKIP      : Result:= 'TKIP';
    DOT11_CIPHER_ALGO_CCMP      : Result:= 'CCMP';
    DOT11_CIPHER_ALGO_WEP104    : Result:= 'WEP104';
    DOT11_CIPHER_ALGO_WPA_USE_GROUP : Result:= 'WPA_USE_GROUP OR RSN_USE_GROUP';
    //DOT11_CIPHER_ALGO_RSN_USE_GROUP : Result:= 'RSN_USE_GROUP';
    DOT11_CIPHER_ALGO_WEP           : Result:= 'WEP';
    DOT11_CIPHER_ALGO_IHV_START     : Result:= 'IHV_START';
    DOT11_CIPHER_ALGO_IHV_END       : Result:= 'IHV_END';
    end;
End;

procedure Scan();
const
WLAN_AVAILABLE_NETWORK_INCLUDE_ALL_ADHOC_PROFILES =$00000001;
var
  hClient              : THandle;
  dwVersion            : DWORD;
  ResultInt            : DWORD;
  pInterface           : Pndu_WLAN_INTERFACE_INFO_LIST;
  i                    : Integer;
  j                    : Integer;
  pAvailableNetworkList: Pndu_WLAN_AVAILABLE_NETWORK_LIST;
  pInterfaceGuid       : PGUID;
  SDummy               : string;
begin
  ResultInt:=WlanOpenHandle(1, nil, @dwVersion, @hClient);
  if  ResultInt<> ERROR_SUCCESS then
  begin
     WriteLn('Error Open CLient'+IntToStr(ResultInt));
     Exit;
  end;

  ResultInt:=WlanEnumInterfaces(hClient, nil, @pInterface);
  if  ResultInt<> ERROR_SUCCESS then
  begin
     WriteLn('Error Enum Interfaces '+IntToStr(ResultInt));
     exit;
  end;

  for i := 0 to pInterface^.dwNumberOfItems - 1 do
  begin
   Writeln('Interface       ' + pInterface^.InterfaceInfo[i].strInterfaceDescription);
   WriteLn('GUID            ' + GUIDToString(pInterface^.InterfaceInfo[i].InterfaceGuid));
   Writeln('');
   pInterfaceGuid:= @pInterface^.InterfaceInfo[pInterface^.dwIndex].InterfaceGuid;

      ResultInt:=WlanGetAvailableNetworkList(hClient,pInterfaceGuid,WLAN_AVAILABLE_NETWORK_INCLUDE_ALL_ADHOC_PROFILES,nil,pAvailableNetworkList);
      if  ResultInt<> ERROR_SUCCESS then
      begin
         WriteLn('Error WlanGetAvailableNetworkList '+IntToStr(ResultInt));
         Exit;
      end;

        for j := 0 to pAvailableNetworkList^.dwNumberOfItems - 1 do
        Begin
           WriteLn(Format('Profile         %s',[WideCharToString(pAvailableNetworkList^.Network[j].strProfileName)]));
           SDummy:=PChar(@pAvailableNetworkList^.Network[j].dot11Ssid.ucSSID);
           WriteLn(Format('NetworkName     %s',[SDummy]));
           WriteLn(Format('Signal Quality  %d ',[pAvailableNetworkList^.Network[j].wlanSignalQuality])+'%');
           //SDummy := GetEnumName(TypeInfo(Tndu_DOT11_AUTH_ALGORITHM),integer(pAvailableNetworkList^.Network[j].dot11DefaultAuthAlgorithm)) ;
           SDummy:=DOT11_AUTH_ALGORITHM_To_String(pAvailableNetworkList^.Network[j].dot11DefaultAuthAlgorithm);
           WriteLn(Format('Auth Algorithm  %s ',[SDummy]));
           SDummy:=DOT11_CIPHER_ALGORITHM_To_String(pAvailableNetworkList^.Network[j].dot11DefaultCipherAlgorithm);
           WriteLn(Format('Auth Algorithm  %s ',[SDummy]));
           Writeln('');
        End;
  end;

  WlanCloseHandle(hClient, nil);

end;
begin
  try
    Scan();
    Readln;
  except
    on E:Exception do
      Writeln(E.Classname, ': ', E.Message);
  end;
end.

alt text http://i33.tinypic.com/2z83ubt.jpg

再见.