这段代码是我在网上找得,
很好用。
uses winsock;
procedure TForm1.FormCreate(Sender: TObject);
type
TaPInAddr = Array[0..10] of PInAddr;
PaPInAddr = ^TaPInAddr;
var
phe: PHostEnt;
pptr: PaPInAddr;
Buffer: Array[0..63] of Char;
I: Integer;
GInitData: TWSAData;
IP: String;
begin
Screen.Cursor := crHourGlass;
try
WSAStartup($101, GInitData);
IP:='0.0.0.0';
GetHostName(Buffer, SizeOf(Buffer));
phe := GetHostByName(buffer);
if phe = nil then
begin
label2.Caption:=ip;
exit;
end;
pPtr := PaPInAddr(phe^.h_addr_list);
I := 0;
while pPtr^ <> nil do
begin
IP := inet_ntoa(pptr^^);
Inc(I);
end;
WSACleanup;
//如果上网则为上网ip否则是网卡ip
label2.Caption:=ip;
finally
Screen.Cursor := crDefault;
end;
end;