Get real screen resolution using Win32 API

I need to get the real screen resolution, that is the resolution that actual output by the gpu, for each of the multiple screen, without affecting by dpi settings. I tried many answers from SO, but none of them seems to handle it correctly.

Some of the answers I tried:

• Is GetScaleFactorForMonitor winapi returning incorrect scaling factor? Calling SetProcessDpiAwarenessContext() or SetProcessApiAware() does not help, GetScaleFactorForMonitor() never returns the correct scale factor for anything other than 100% dpi.

-GetDpiForMonitor() also does not return the correct dpi. And the dpiX and dpiY it returns does not even match.

Code:

static int result = []() {SetProcessDpiAwareness(PROCESS_DPI_UNAWARE); return 1; }(); //nope

struct MonitorInfo
{
    MONITORINFO m_moniforInfo;
    UINT dpiX{};
    UINT dpiY{};
};

static std::vector<MonitorInfo> monitors;

BOOL EnumProc(HMONITOR monitor, HDC _, LPRECT __, LPARAM ___)
{
    MONITORINFO monitorInfo{ sizeof(MONITORINFO) };
    GetMonitorInfo(monitor, &monitorInfo);
    UINT dpix;
    UINT dpiy;
    GetDpiForMonitor(monitor, MDT_RAW_DPI, &dpix, &dpiy);
    monitors.push_back(MonitorInfo{ monitorInfo, dpix, dpiy});
    return true;
}

int main()
{
    SetProcessDpiAwareness(PROCESS_DPI_UNAWARE); //nope
    EnumDisplayMonitors(nullptr, nullptr, EnumProc, 0);
    for (auto const& monitor : monitors)
    {
        auto width = monitor.m_moniforInfo.rcMonitor.right - monitor.m_moniforInfo.rcMonitor.left;
        auto height = monitor.m_moniforInfo.rcMonitor.bottom - monitor.m_moniforInfo.rcMonitor.top;
        std::cout << width << " x " << height << '\t' << "dpix: " << monitor.dpiX << '\t' << monitor.dpiY << '\n';
    }
}

Output, comments in (parens)

2560 x 1440     dpix: 108       109  (this is 3840*2160 with 150% scale)
2560 x 1440     dpix: 109       109  (this is 2560*2160 with 100% scale)
1920 x 1080     dpix: 163       106  (this is 3840*2160 with 200% scale)
1080 x 1920     dpix: 90        89   (this is 1080*1920 with 100% scale, shouldn't it be 96d?)
1920 x 1080     dpix: 163       106 (this is 3840*2160 with 200% scale too)