void QWindowsWindow::checkForScreenChanged(ScreenChangeMode mode)
{
    if (parent() || QWindowsScreenManager::isSingleScreen())
        return;

    QPlatformScreen *currentScreen = screen();
    const QWindowsScreen *newScreen =
        QWindowsContext::instance()->screenManager().screenForHwnd(m_data.hwnd);
    if (newScreen == nullptr || newScreen == currentScreen)
        return;
    // For screens with different DPI: postpone until WM_DPICHANGE
    if (mode == FromGeometryChange
     *   && !equalDpi(currentScreen->logicalDpi(), newScreen->logicalDpi())) { // the error happend here*
        return;
    }
    qCDebug(lcQpaWindows).noquote().nospace() << __FUNCTION__
        << ' ' << window() << " \"" << currentScreen->name()
        << "\"->\"" << newScreen->name() << '"';
    if (mode == FromGeometryChange)
        setFlag(SynchronousGeometryChangeEvent);
    updateFullFrameMargins();
    QWindowSystemInterface::handleWindowScreenChanged(window(), newScreen->screen());
}

qwindows!QWindowsWindow::checkForScreenChanged
1884
c:\users\qt\work\qt\qtbase\src\plugins\platforms\windows\qwindowswindow.cpp
qwindows!QWindowsWindow::handleGeometryChange
1917
c:\users\qt\work\qt\qtbase\src\plugins\platforms\windows\qwindowswindow.cpp
qwindows!QWindowsContext::windowsProc
1217
c:\users\qt\work\qt\qtbase\src\plugins\platforms\windows\qwindowscontext.cpp
qwindows!qWindowsWndProc
1594
c:\users\qt\work\qt\qtbase\src\plugins\platforms\windows\qwindowscontext.cpp
USER32!UserCallWinProcCheckWow
USER32!SendMessageWorker
USER32!RealDefWindowProcWorker
USER32!RealDefWindowProcW
UxTheme!_ThemeDefWindowProc
1096
shell\themes\uxtheme\sethook.cpp
UxTheme!ThemeDefWindowProcW
1110
shell\themes\uxtheme\sethook.cpp
USER32!DefWindowProcW
qwindows!qWindowsWndProc
1603
c:\users\qt\work\qt\qtbase\src\plugins\platforms\windows\qwindowscontext.cpp
USER32!UserCallWinProcCheckWow
USER32!DispatchClientMessage
USER32!_fnINLPWINDOWPOS
ntdll!KiUserCallbackDispatcherContinue
win32u!NtUserPeekMessage
USER32!_PeekMessage
USER32!PeekMessageW
Qt5Core!QEventDispatcherWin32::processEvents
587
c:\users\qt\work\qt\qtbase\src\corelib\kernel\qeventdispatcher_win.cpp
qwindows!QWindowsGuiEventDispatcher::processEvents
75
c:\users\qt\work\qt\qtbase\src\platformsupport\eventdispatchers\qwindowsguieventdispatcher.cpp
Qt5Core!QEventLoop::processEvents
138
c:\users\qt\work\qt\qtbase\src\corelib\kernel\qeventloop.cpp
Qt5Core!QEventLoop::exec
225
c:\users\qt\work\qt\qtbase\src\corelib\kernel\qeventloop.cpp
Qt5Core!QCoreApplication::exec
1403
c:\users\qt\work\qt\qtbase\src\corelib\kernel\qcoreapplication.cpp
eyeblink!main
172
c:\git\eyeblink\sources\main.cpp
eyeblink!WinMain
97
c:\users\qt\work\qt\qtbase\src\winmain\qtmain_win.cpp
eyeblink!invoke_main
102
f:\dd\vctools\crt\vcstartup\src\startup\exe_common.inl
eyeblink!__scrt_common_main_seh
288
f:\dd\vctools\crt\vcstartup\src\startup\exe_common.inl
KERNEL32!BaseThreadInitThunk
ntdll!RtlUserThreadStart