用VC獲取本機IP地址列表的方法

// GetIplist.cpp : Defines the entry point for the console application.
//
// 程序功能：取出本機的所有IP，保存為一個字符串列表
// 作者：someone(阿風)
// Windows xp + sp2 , vc6 + sp5編譯通過
//
#include
using std::cin;
using std::cout;
using std::cerr;
using std::endl;
#include
using std::list;
#include
using std::string;
#include
#pragma comment( lib, "ws2_32.lib" )
bool GetIpList( list r_iplist )
{
Word wVersionRequested;
WSADATA wsaData;
int err;
wVersionRequested = MAKEWord( 2, 2 );
err = WSAStartup( wVersionRequested, &wsaData );
if ( err != 0 )
{
cout < < "WSAStartup failed !" < < endl;
return false;
}
char szhn[256];
int nStatus = gethostname(szhn, sizeof(szhn));
if (nStatus == SOCKET_ERROR )
{
cout < < "gethostname failed, Error code: " < < WSAGetLastError() < < endl;
return false;
}
HOSTENT *host = gethostbyname(szhn);
if (host != NULL)
{
for ( int i=0; ; i++ )
{
r_iplist.push_back( inet_ntoa( *(IN_ADDR*)host-> h_addr_list[i] ) ) ;
if ( host-> h_addr_list[i] + host-> h_length > = host-> h_name )
break;
}
}
WSACleanup();
return true;
}
int main(int argc, char *argv[])
{
list iplist;
std::list ::iterator ip;
if ( !GetIpList( iplist ) )
{
cout < < "Get ip list failed !" < < endl;
return -1;
}
cout < < "IP list :" < < endl;
for ( ip = iplist.begin(); ip != iplist.end(); ip++ )
{
cout < < " " < < *ip < < endl;
}
return 0;
}