#include <Windows.h>
#include <iostream>  
#include <DXGI.h>  
#include <vector>
#pragma comment(lib, "DXGI.lib")

using namespace std;

int main(int argc, char* argv[])
{
    // 参数定义  
    IDXGIFactory* pFactory;
    IDXGIAdapter* pAdapter;
    std::vector <IDXGIAdapter*> vAdapters;            // 显卡  

    // 显卡的数量  
    int iAdapterNum = 0;

    // 创建一个DXGI工厂  
    HRESULT hr = CreateDXGIFactory(__uuidof(IDXGIFactory), (void**)(&pFactory));
    if (FAILED(hr))
        return -1;

    // 枚举适配器  
    while (pFactory->EnumAdapters(iAdapterNum, &pAdapter) != DXGI_ERROR_NOT_FOUND)
    {
        vAdapters.push_back(pAdapter);
        ++iAdapterNum;
    }

    // 信息输出   
    cout << "===============获取到" << iAdapterNum << "块显卡===============" << endl;
    for (size_t i = 0; i < vAdapters.size(); i++)
    {
        // 获取信息  
        DXGI_ADAPTER_DESC adapterDesc;
        vAdapters[i]->GetDesc(&adapterDesc);
        wstring aa(adapterDesc.Description);
        // 输出显卡信息  
        cout << "系统视频内存:" << adapterDesc.DedicatedSystemMemory / 1024 / 1024 << "M" << endl;
        cout << "专用视频内存:" << adapterDesc.DedicatedVideoMemory / 1024 / 1024 << "M" << endl;
        cout << "共享系统内存:" << adapterDesc.SharedSystemMemory / 1024 / 1024 << "M" << endl;
        wcout << L"设备描述:" << aa.c_str() << endl;
        cout << "设备ID:" << adapterDesc.DeviceId << endl;
        cout << "PCI ID修正版本:" << adapterDesc.Revision << endl;
        cout << "子系统PIC ID:" << adapterDesc.SubSysId << endl;
        cout << "厂商编号:" << adapterDesc.VendorId << endl;

        // 输出设备  
        IDXGIOutput* pOutput;
        std::vector<IDXGIOutput*> vOutputs;
        // 输出设备数量  
        int iOutputNum = 0;
        while (vAdapters[i]->EnumOutputs(iOutputNum, &pOutput) != DXGI_ERROR_NOT_FOUND)
        {
            vOutputs.push_back(pOutput);
            iOutputNum++;
        }

        cout << "-----------------------------------------" << endl;
        cout << "获取到" << iOutputNum << "个显示设备:" << endl;
        cout << endl;

        for (size_t n = 0; n < vOutputs.size(); n++)
        {
            // 获取显示设备信息  
            DXGI_OUTPUT_DESC outputDesc;
            vOutputs[n]->GetDesc(&outputDesc);

            // 获取设备支持  
            UINT uModeNum = 0;
            DXGI_FORMAT format = DXGI_FORMAT_R8G8B8A8_UNORM;
            UINT flags = DXGI_ENUM_MODES_INTERLACED;

            vOutputs[n]->GetDisplayModeList(format, flags, &uModeNum, 0);
            DXGI_MODE_DESC* pModeDescs = new DXGI_MODE_DESC[uModeNum];
            vOutputs[n]->GetDisplayModeList(format, flags, &uModeNum, pModeDescs);

            cout << "显示设备名称:" << outputDesc.DeviceName << endl;
            cout << "显示设备当前分辨率:" << outputDesc.DesktopCoordinates.right - outputDesc.DesktopCoordinates.left << "*" << outputDesc.DesktopCoordinates.bottom - outputDesc.DesktopCoordinates.top << endl;
            cout << endl;

            // 所支持的分辨率信息  
            cout << "分辨率信息:" << endl;
            for (UINT m = 0; m < uModeNum; m++)
            {
                cout << "== 分辨率:" << pModeDescs[m].Width << "*" << pModeDescs[m].Height << "     刷新率" << (pModeDescs[m].RefreshRate.Numerator) / (pModeDescs[m].RefreshRate.Denominator) << endl;
            }
        }
        vOutputs.clear();

    }
    vAdapters.clear();

    system("pause");
    return 0;
}