#include <IPHlpApi.h>                       // for GetAdaptersInfo()
#pragma comment(lib, “iphlpapi.lib” )

// MAC 가져오기

CString GetMACAddress()
{
    CString strMac;
    DWORD size = sizeof(PIP_ADAPTER_INFO);

    PIP_ADAPTER_INFO Info;

    ZeroMemory( &Info, size );

    int result = GetAdaptersInfo( Info, &size );        // 첫번째 랜카드 MAC address 가져오기

    if (result == ERROR_BUFFER_OVERFLOW)    // GetAdaptersInfo가 메모리가 부족하면 재 할당하고 재호출
    {
        Info = (PIP_ADAPTER_INFO)malloc(size);
        GetAdaptersInfo( Info, &size );
    }

    if(!Info)
        return strMac;

    strMac.Format(“%0.2X-%0.2X-%0.2X-%0.2X-%0.2X-%0.2X”, Info->Address[0], Info->Address[1], Info->Address[2], Info->Address[3], Info->Address[4], Info->Address[5] );

    return strMac;
}