VC获取掩码

CString GetMask(LPCTSTR szIP){CString szRet;for(int i=0;i<m_iphelper.GetAdapterCount();i++){std::vector<std::string> masklist=m_iphelper.GetAdapterIPMaskList(i);std::vector<std::string> iplist=m_iphelper.GetAdapterIPAddressList(i);for(int j=0;j<iplist.size();j++){string sip=iplist[j];if(i>=masklist.size())break;string smask=masklist[j];if(strlen(szIP)==0 || strcmp(sip.c_str(),szIP)==0){szRet=smask.c_str();return szRet;}}}return szRet;}