Winsock API 取得本地主机的名字及地址

#include <winsock.h>
void __fastcall TForm1::Button1Click(TObject *Sender)
{
hostent *p;
char s[128];
char *p2;
//Get the computer name
gethostname(s, 128);
p = gethostbyname(s);
Memo1->Lines->Add(p->h_name); 
//Get the IpAddress
p2 = inet_ntoa(*((in_addr *)p->h_addr));
Memo1->Lines->Add(p2);
} 
void __fastcall TForm1::FormCreate(TObject *Sender)
{
WORD wVersionRequested;
WSADATA wsaData; 
//Start up WinSock
wVersionRequested = MAKEWORD(1, 1);
WSAStartup(wVersionRequested, &wsaData);
} 
void __fastcall TForm1::FormDestroy(TObject *Sender)
{
WSACleanup();
}