uses
WinInet;
const
MODEM = 1;
LAN = 2;
PROXY = 4;
BUSY = 8;
function GetConnectionKind(var strKind: string): Boolean;
var
flags: DWORD;
begin
strKind := '';
Result := InternetGetConnectedState(@flags, 0);
if Result then
begin
if (flags and MODEM) = MODEM then strKind := 'Modem';
if (flags and LAN) = LAN then strKind := 'LAN';
if (flags and PROXY) = PROXY then strKind := 'Proxy';
if (flags and BUSY) = BUSY then strKind := 'Modem Busy';
end;
end;
procedure TForm1.Button1Click(Sender: TObject);
var
strKind: string;
begin
if GetConnectionKind(strKind) then
ShowMessage(strKind);
end;