c++得到本地用户名和IP

bool CDlgResetAlarmInfo::GetLocalUserNameAddIP(CString &a_lstrUserName ,CString &a_IpStr)	
{
	char buf[256]="";

	WSADATA w;

	WSAStartup(0x0101, &w);

	struct hostent *ph = 0;

	gethostname(buf, 256);

	string hostNmae = buf;
    
	a_lstrUserName  = hostNmae.c_str();

	ph = gethostbyname(buf);

	const char *IP =inet_ntoa(*((struct in_addr *)ph->h_addr_list[0]));

	string strIp =IP; 

	a_IpStr = strIp.c_str();

	WSACleanup();

	if (a_lstrUserName == "" || a_IpStr == "")
	{
	    return false;
	}
    return true;
}

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