龙书11_chapter_4 二：习题中的Adapter

    HR(dxgiFactory->CreateSwapChain(md3dDevice, &sd, &mSwapChain));
    //begin 检测本设备有几个图形卡
    UINT myAdapterNums = 0;
    IDXGIAdapter *pAdapter;
    std::vector<IDXGIAdapter* > vAdapters;//adapter容器
    while (dxgiFactory->EnumAdapters(myAdapterNums,&pAdapter)!=DXGI_ERROR_NOT_FOUND)//获取所有的
    {
        vAdapters.push_back(pAdapter);
        ++myAdapterNums;//计数
    }
    char szBuf[10];
    //memset(szBuf,_T(‘\0‘),sizeof(szBuf));
    //sprintf_s(szBuf,"%d",myAdapterNums);
    _itoa_s(myAdapterNums,szBuf,10);//int --> char*
    int begIndex =  strlen(szBuf);  //计算这个整数有多少位，即在char数组中有几个元素？ 
    for (int i=begIndex;i<=9;i++) //对其后的元素全部赋为空， 避免的乱码问题。
    {
        szBuf[i] = ‘\0‘;
    }
    OutputDebugString(L"Testtttttttttttt:");
    OutputDebugString((LPCTSTR)szBuf);
    //end 检测本设备有几个图形卡