VC获取计算机名和IP地址

void GetPcNameAndIp(CString &strPCName,vector<CString> &vIp)
{
	vIp.clear();
	WSADATA wsadata;
	WORD dwVersionRequested;
	int err = WSAStartup(dwVersionRequested,&wsadata);
	char hostname[128];
	if(gethostname(hostname,128)==0)
	{
		strPCName.Format("%s",hostname);
	}
	char buf[20];
	struct hostent *pHost = gethostbyname(hostname);

	CString strTmp;
	for (int i = 0; pHost != NULL && pHost->h_addr_list[i] != NULL; i++)
	{
		strcpy_s(buf,inet_ntoa(*(struct in_addr *)pHost->h_addr_list[i]));
		strTmp.Format("%s",buf);
		vIp.push_back(strTmp);
	} 

	WSACleanup();
}