source: trunk/Utilities/Miscellaneous/DxgiAndHighDpi01/DxgiAndHighDpi01.cpp @ 799

// NOTE: https://stackoverflow.com/questions/48172751/dxgi-monitors-enumeration-does-not-give-full-size-for-dell-p2715q-monitor

#include <winsdkver.h>
#include <sdkddkver.h>
#include <stdio.h>
#include <tchar.h>
#include <iostream>
#include <ShellScalingAPI.h>
#include <dxgi.h>

#pragma comment(lib, "shcore.lib")
#pragma comment(lib, "dxgi.lib")

using namespace std;

int main()
{
        //SetProcessDpiAwareness(PROCESS_SYSTEM_DPI_AWARE);

        IDXGIFactory1* pFactory1;

        HRESULT hr = CreateDXGIFactory1(__uuidof(IDXGIFactory1), (void**)(&pFactory1));

        if (FAILED(hr))
        {
                wcout << L"CreateDXGIFactory1 failed. " << endl;
                return 0;
        }

        for (UINT i = 0;; i++)
        {
                IDXGIAdapter1* pAdapter1 = nullptr;

                hr = pFactory1->EnumAdapters1(i, &pAdapter1);

                if (hr == DXGI_ERROR_NOT_FOUND)
                {
                        // no more adapters
                        break;
                }

                if (FAILED(hr))
                {
                        wcout << L"EnumAdapters1 failed. " << endl;
                        return 0;
                }

                DXGI_ADAPTER_DESC1 desc;

                hr = pAdapter1->GetDesc1(&desc);

                if (FAILED(hr))
                {
                        wcout << L"GetDesc1 failed. " << endl;
                        return 0;
                }

                wcout << L"Adapter: " << desc.Description << endl;

                for (UINT j = 0;; j++)
                {
                        IDXGIOutput *pOutput = nullptr;

                        HRESULT hr = pAdapter1->EnumOutputs(j, &pOutput);

                        if (hr == DXGI_ERROR_NOT_FOUND)
                        {
                                // no more outputs
                                break;
                        }

                        if (FAILED(hr))
                        {
                                wcout << L"EnumOutputs failed. " << endl;
                                return 0;
                        }

                        DXGI_OUTPUT_DESC desc;

                        hr = pOutput->GetDesc(&desc);

                        if (FAILED(hr))
                        {
                                wcout << L"GetDesc1 failed. " << endl;
                                return 0;
                        }

                        wcout << L"  Output: " << desc.DeviceName <<
                                L"  (" << desc.DesktopCoordinates.left << L"," << desc.DesktopCoordinates.top << L")-(" <<
                                (desc.DesktopCoordinates.right - desc.DesktopCoordinates.left) << L"," <<
                                (desc.DesktopCoordinates.bottom - desc.DesktopCoordinates.top) << L")" << endl;

                }
        }

        return 0;
}