Introdution to 3D Game Programming With DirectX11

    IDXGIAdapter * pAdapter; 
    std::vector  vAdapters; 
    IDXGIFactory* pFactory = NULL; 
    

    // Create a DXGIFactory object.
    if(FAILED(CreateDXGIFactory(__uuidof(IDXGIFactory) ,(void**)&pFactory)))
    {
        return vAdapters;
    }


    for ( UINT i = 0;
          pFactory->EnumAdapters(i, &pAdapter) != DXGI_ERROR_NOT_FOUND;
          ++i )
    {
        vAdapters.push_back(pAdapter); 
    } 


    if(pFactory)
    {
        pFactory->Release();
    }

    return vAdapters;

You can use CheckInterfaceSupport only to check whether a Direct3D 10.x interface is supported, and only on Windows Vista SP1 and later versions of the operating system. If you try to use CheckInterfaceSupport to check whether a Direct3D 11.x and later version interface is supported, CheckInterfaceSupport returns DXGI_ERROR_UNSUPPORTED. Therefore, do not use CheckInterfaceSupport.

IDXGIOutput* pOutput = NULL; 
HRESULT hr;

hr = pAdapter->EnumOutputs(0,&pOutput);