Проверка на наличие соединения с интернетом(Delphi)

Discussion in 'С/С++, C#, Rust, Swift, Go, Java, Perl, Ruby' started by OPF_Nik, 25 Dec 2009.

  1. OPF_Nik

    OPF_Nik New Member

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    Народ, подскажите как сделать проверку на наличие соединения с интернетом, через DSL модем?
     
  2. Ra$cal

    Ra$cal Elder - Старейшина

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    http://tinyurl.com/ycvnqxd
     
  3. Maxxxtri23

    Maxxxtri23 New Member

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    if ping ya.ru <> 0 then showmessage('Connected');
    Как то так.

    Или же первая ссыль в гугле говорит нам, что:

    function IsConnectedToInternet(lpdwFlags: LPDWORD): Boolean;
    const
    WininetDLL = 'wininet.dll';
    var
    hWininetDLL: THandle;
    dwReserved: DWORD;
    fn_InternetGetConnectedState: function(lpdwFlags: LPDWORD; dwReserved: DWORD): BOOL; stdcall;
    begin
    Result := False;
    dwReserved := 0;
    hWininetDLL := LoadLibrary(WininetDLL);
    if hWininetDLL > 0 then
    begin
    @fn_InternetGetConnectedState := GetProcAddress(hWininetDLL,'Interne tGetConnectedState');
    if Assigned(fn_InternetGetConnectedSta te) then
    begin
    Result := fn_InternetGetConnectedState(lpdwFl ags, dwReserved);
    end;
    FreeLibrary(hWininetDLL);
    end else
    raise Exception.Create('Unable to locate function InternetGetConnectedState in library ' + WininetDLL);
    end;

    procedure TForm1.Button1Click(Sender: TObject);
    const
    INTERNET_CONNECTION_MODEM = 1;
    INTERNET_CONNECTION_LAN = 2;
    INTERNET_CONNECTION_PROXY = 4;
    INTERNET_CONNECTION_MODEM_BUSY = 8;
    var
    dwConnectionTypes: DWORD;
    begin
    dwConnectionTypes :=
    INTERNET_CONNECTION_MODEM +
    INTERNET_CONNECTION_LAN +
    INTERNET_CONNECTION_PROXY;
    if IsConnectedToInternet(@dwConnection Types) then
    ShowMessage('Connected.')
    else
    ShowMessage('Not Connected.')
    end;