获得连接类型

uses wininet;

Function ConnectionKind :boolean;
var
flags: dword;
begin
Result := InternetGetConnectedState(@flags, 0);
if Result then
begin
if (flags and INTERNET_CONNECTION_MODEM) = INTERNET_CONNECTION_MODEM then
begin
showmessage('Modem');
end;

if (flags and INTERNET_CONNECTION_LAN) = INTERNET_CONNECTION_LAN then

begin
showmessage('LAN');
end;
if (flags and INTERNET_CONNECTION_PROXY) = INTERNET_CONNECTION_PROXY then

begin
showmessage('Proxy');
end;

if (flags and INTERNET_CONNECTION_MODEM_BUSY)=INTERNET_CONNECTION_MODEM_BUSY then
begin
showmessage('Modem Busy');
end;
end;
end;

procedure TForm1.Button1Click(Sender: TObject);
begin
ConnectionKind;
end;