Enumerate the network adaptor in system

Just use GetAdaptersInfo() defined in iphlpapi.h, Link to Iphlpapi.lib.

In the struct IP_ADAPTER_INFO you may get adaptor’s MAC, IPv4 addresses, gateways, and secondary WINS servers and so on. The Address contains the MAC, and IpAddressList contains the IP information.

DWORD GetAdaptersInfo(

  PIP_ADAPTER_INFO pAdapterInfo,

  PULONG pOutBufLen

);

void CgetAdaptorDlg::OnBnClickedButton() {     m_AdaptorCombo.ResetContent();       PIP_ADAPTER_INFO pAdapterInfo = NULL;     PIP_ADAPTER_INFO pAdapter = NULL;     DWORD dwRetVal = 0;       ULONG ulOutBufLen = 0;       // allocate memory     if (GetAdaptersInfo(pAdapterInfo, &ulOutBufLen) == ERROR_BUFFER_OVERFLOW) {         //free(pAdapterInfo);         pAdapterInfo = (IP_ADAPTER_INFO *) malloc(ulOutBufLen);        if (pAdapterInfo == NULL) {            printf("Error allocating memory needed to call GetAdaptersinfo/n");            return;        }     }       if ((dwRetVal = GetAdaptersInfo(pAdapterInfo, &ulOutBufLen)) == NO_ERROR) {           pAdapter = pAdapterInfo;        while (pAdapter) {            m_AdaptorCombo.AddString(pAdapter->IpAddressList.IpAddress.String);              pAdapter = pAdapter->Next;        }       } else {         //printf("GetAdaptersInfo failed with error: %d/n", dwRetVal);       }     if (pAdapterInfo)         free(pAdapterInfo);       return ; }