如果嫌上面方法太不专业,而一楼的仁兄的代码你又看不懂,你还可以在程序前面加上下面这段代码,你不需要看懂它,调用ggLocalIP函数就行,不需要参数:
function ggLocalIP : string;
type
TaPInAddr = array [0..10] of PInAddr;
PaPInAddr = ^TaPInAddr;
var
phe : PHostEnt;
pptr : PaPInAddr;
Buffer : array [0..63] of char;
I : Integer;
GInitData : TWSADATA;
begin
WSAStartup($101, GInitData);
Result := '';
GetHostName(Buffer, SizeOf(Buffer));
phe :=GetHostByName(buffer);
if phe = nil then Exit;
pptr := PaPInAddr(Phe^.h_addr_list);
I := 0;
while pptr^[I] <> nil do begin
result:=StrPas(inet_ntoa(pptr^[I]^));
Inc(I);
end;
WSACleanup;
end;
要查IP地址时,直接调用,比如Edit1.Text:=ggLocalIP;
procedure TForm44.Button2Click(Sender: TObject);
var cIP:string;
hent:phostent;
ipaddr:tinaddr;
WSAData:TWSAData;
begin
WSAStartup(2,WSAData);
HEnt:=gethostbyname(PChar(edit1.Text));
with ipaddr,hent^ do
begin
cIP:=format('%d.%d.%d.%d',[byte(h_addr^[0]),byte(h_addr^[1]),byte(h_addr^[2]),byte(h_addr^[3])]);
label1.caption:=cIP;
end;
end;
function localip:string;
type
tapinaddr=array[0..10] of pinaddr;
papinaddr=^tapinaddr;
var
phe:phostent;
pptr:papinaddr;
buffer:array[0..63] of char;
i:integer;
ginitdata:twsadata;
begin
wsastartup($101,ginitdata);
result:='';
gethostname(buffer,sizeof(buffer));
phe:=gethostbyname(buffer);
if phe=nil then
exit;
pptr:=papinaddr(phe^.h_addr_list);
i:=0;
while pptr^[i]<>nil do
begin
result:=strpas(inet_ntoa(pptr^[i]^));
inc(i);
end;
wsacleanup;
end;
procedure TForm1.Button4Click(Sender: TObject);
var
result:string;
begin
result:=localip;
showmessage('本机ip地址为: '+result);
end;
procedure TForm1.Button1Click(Sender: TObject);
var
IpList:TStrings;
i:integer;
begin
IpList:=LocalIPList;
for i:=0 to IPlist.Count-1 do
begin
memo1.Lines.Add(iplist[i]);
end;
end;
function LocalIP:string;
type
TaPInAddr = array [0..10] of PInAddr;
PaPInAddr = ^TaPInAddr;
var
phe : PHostEnt;
pptr : PaPInAddr;
Buffer : array [0..63] of char;
I : Integer;
GInitData : TWSADATA;
begin
WSAStartup($101, GInitData);
Result := '';
GetHostName(Buffer, SizeOf(Buffer));
phe :=GetHostByName(buffer);
if phe = nil then Exit;
pptr := PaPInAddr(Phe^.h_addr_list);
I := 0;
while pptr^[I] <> nil do begin
result:=StrPas(inet_ntoa(pptr^[I]^));
Inc(I);
end;
WSACleanup;
end;
========================================
program get_ip;
uses
winsock,sysutils;
VAR
ch : ARRAY[1..32] OF Char;
i : Integer;
WSData: TWSAData;
MyHost: PHostEnt;
begin
IF WSAstartup(2,wsdata)<>0 THEN
BEGIN
Writeln('can''t start Winsock: Error ',WSAGetLastError);
Halt(2);
END;
try
IF getHostName(@ch[1],32)<>0 THEN
BEGIN
Writeln('getHostName failed');
Halt(3);
END;
except
Writeln('getHostName failed');
halt(3);
end;
MyHost:=GetHostByName(@ch[1]);
IF MyHost=NIL THEN
BEGIN
Writeln(GetHostName('+StrPas(@ch[1])+') failed : Error
'+IntToStr(WSAGetLastError));
Halt(4);
END
ELSE
BEGIN
Write('address ');
FOR i:=1 TO 4 DO
BEGIN
Write(Ord(MyHost.h_addr^[i-1]));
IF i<4 THEN
then write('.')
ELSE
writeln;
END;
END;
end.