Merge remote-tracking branch 'origin/5.15' into dev

 Conflicts:
	src/corelib/tools/qhash.h
	src/gui/kernel/qevent.h
	src/widgets/kernel/qshortcut.cpp
	src/widgets/kernel/qshortcut.h

Change-Id: If61c206ee43ad1d97f5b07f58ac93c4583ce5620

21 files changed, 138 insertions, 50 deletions

diff --git a/src/plugins/platforms/windows/qwindowscontext.cpp b/src/plugins/platforms/windows/qwindowscontext.cpp
index f7d04b667d..a2dd25f8cc 100644
--- a/src/plugins/platforms/windows/qwindowscontext.cpp
+++ b/src/plugins/platforms/windows/qwindowscontext.cpp
@@ -274,6 +274,8 @@ struct QWindowsContextPrivate {
     const HRESULT m_oleInitializeResult;
     QWindow *m_lastActiveWindow = nullptr;
     bool m_asyncExpose = false;
+    HPOWERNOTIFY m_powerNotification = nullptr;
+    HWND m_powerDummyWindow = nullptr;
 };
 
 QWindowsContextPrivate::QWindowsContextPrivate()
@@ -314,6 +316,13 @@ QWindowsContext::~QWindowsContext()
 #if QT_CONFIG(tabletevent)
     d->m_tabletSupport.reset(); // Destroy internal window before unregistering classes.
 #endif
+
+    if (d->m_powerNotification)
+        UnregisterPowerSettingNotification(d->m_powerNotification);
+
+    if (d->m_powerDummyWindow)
+        DestroyWindow(d->m_powerDummyWindow);
+
     unregisterWindowClasses();
     if (d->m_oleInitializeResult == S_OK || d->m_oleInitializeResult == S_FALSE)
         OleUninitialize();
@@ -381,6 +390,55 @@ bool QWindowsContext::initPointer(unsigned integrationOptions)
     return true;
 }
 
+extern "C" LRESULT QT_WIN_CALLBACK qWindowsPowerWindowProc(HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam)
+{
+    if (message != WM_POWERBROADCAST || wParam != PBT_POWERSETTINGCHANGE)
+        return DefWindowProc(hwnd, message, wParam, lParam);
+
+    static bool initialized = false; // ignore the initial change
+    if (!initialized) {
+        initialized = true;
+        return DefWindowProc(hwnd, message, wParam, lParam);
+    }
+
+    auto setting = reinterpret_cast<const POWERBROADCAST_SETTING *>(lParam);
+    if (setting) {
+        auto data = reinterpret_cast<const DWORD *>(&setting->Data);
+        if (*data == 1) {
+            // Repaint the windows when returning from sleeping display mode.
+            const auto tlw = QGuiApplication::topLevelWindows();
+            for (auto w : tlw) {
+                if (w->isVisible() && w->windowState() != Qt::WindowMinimized) {
+                    if (auto tw = QWindowsWindow::windowsWindowOf(w)) {
+                        if (HWND hwnd = tw->handle()) {
+                            InvalidateRect(hwnd, nullptr, false);
+                        }
+                    }
+                }
+            }
+        }
+    }
+    return DefWindowProc(hwnd, message, wParam, lParam);
+}
+
+bool QWindowsContext::initPowerNotificationHandler()
+{
+    if (d->m_powerNotification)
+        return false;
+
+    d->m_powerDummyWindow = createDummyWindow(QStringLiteral("QtPowerDummyWindow"), L"QtPowerDummyWindow", qWindowsPowerWindowProc);
+    if (!d->m_powerDummyWindow)
+        return false;
+
+    d->m_powerNotification = RegisterPowerSettingNotification(d->m_powerDummyWindow, &GUID_MONITOR_POWER_ON, DEVICE_NOTIFY_WINDOW_HANDLE);
+    if (!d->m_powerNotification) {
+        DestroyWindow(d->m_powerDummyWindow);
+        d->m_powerDummyWindow = nullptr;
+        return false;
+    }
+    return true;
+}
+
 void QWindowsContext::setTabletAbsoluteRange(int a)
 {
 #if QT_CONFIG(tabletevent)
diff --git a/src/plugins/platforms/windows/qwindowscontext.h b/src/plugins/platforms/windows/qwindowscontext.h
index d94ae3f73b..8027f09389 100644
--- a/src/plugins/platforms/windows/qwindowscontext.h
+++ b/src/plugins/platforms/windows/qwindowscontext.h
@@ -176,6 +176,8 @@ public:
     bool initTablet(unsigned integrationOptions);
     bool initPointer(unsigned integrationOptions);
 
+    bool initPowerNotificationHandler();
+
     int defaultDPI() const;
 
     QString registerWindowClass(const QWindow *w);
diff --git a/src/plugins/platforms/windows/qwindowsdialoghelpers.cpp b/src/plugins/platforms/windows/qwindowsdialoghelpers.cpp
index b7ab952a1d..cdb4e407d1 100644
--- a/src/plugins/platforms/windows/qwindowsdialoghelpers.cpp
+++ b/src/plugins/platforms/windows/qwindowsdialoghelpers.cpp
@@ -466,14 +466,14 @@ inline void QWindowsFileDialogSharedData::setSelectedNameFilter(const QString &f
 inline QList<QUrl> QWindowsFileDialogSharedData::selectedFiles() const
 {
     m_data->mutex.lock();
-    const QList<QUrl> result = m_data->selectedFiles;
+    const auto result = m_data->selectedFiles;
     m_data->mutex.unlock();
     return result;
 }
 
 inline QString QWindowsFileDialogSharedData::selectedFile() const
 {
-    const QList<QUrl> files = selectedFiles();
+    const auto files = selectedFiles();
     return files.isEmpty() ? QString() : files.front().toLocalFile();
 }
 
diff --git a/src/plugins/platforms/windows/qwindowsdropdataobject.cpp b/src/plugins/platforms/windows/qwindowsdropdataobject.cpp
index e1a41c0ede..c9dd1c7c17 100644
--- a/src/plugins/platforms/windows/qwindowsdropdataobject.cpp
+++ b/src/plugins/platforms/windows/qwindowsdropdataobject.cpp
@@ -95,7 +95,7 @@ bool QWindowsDropDataObject::shouldIgnore(LPFORMATETC pformatetc) const
                 || pformatetc->cfFormat == CF_TEXT
                 || formatName == QStringLiteral("UniformResourceLocator")
                 || formatName == QStringLiteral("UniformResourceLocatorW")) {
-            QList<QUrl> urls = dropData->urls();
+            const auto urls = dropData->urls();
             return std::all_of(urls.cbegin(), urls.cend(), [] (const QUrl &u) { return u.isLocalFile(); });
         }
     }
diff --git a/src/plugins/platforms/windows/qwindowsglcontext.h b/src/plugins/platforms/windows/qwindowsglcontext.h
index e5f6fefd5a..8794368fe4 100644
--- a/src/plugins/platforms/windows/qwindowsglcontext.h
+++ b/src/plugins/platforms/windows/qwindowsglcontext.h
@@ -89,7 +89,7 @@ struct QWindowsOpenGLContextFormat
 
     QSurfaceFormat::OpenGLContextProfile profile = QSurfaceFormat::NoProfile;
     int version = 0; //! majorVersion<<8 + minorVersion
-    QSurfaceFormat::FormatOptions options = nullptr;
+    QSurfaceFormat::FormatOptions options;
 };
 
 #ifndef QT_NO_DEBUG_STREAM
diff --git a/src/plugins/platforms/windows/qwindowsinputcontext.cpp b/src/plugins/platforms/windows/qwindowsinputcontext.cpp
index d5258ca6a3..079c25f9eb 100644
--- a/src/plugins/platforms/windows/qwindowsinputcontext.cpp
+++ b/src/plugins/platforms/windows/qwindowsinputcontext.cpp
@@ -280,13 +280,15 @@ void QWindowsInputContext::showInputPanel()
     // with Windows 10 if the Windows IME is (re)enabled _after_ the caret is shown.
     if (m_caretCreated) {
         cursorRectChanged();
-        // We only call ShowCaret() on Windows 10 as in earlier versions the caret
-        // would actually be visible (QTBUG-74492) and the workaround for the
-        // Surface seems unnecessary there anyway. But leave it hidden for IME.
-        if (QOperatingSystemVersion::current() >= QOperatingSystemVersion::Windows10)
+        // We only call ShowCaret() on Windows 10 after 1703 as in earlier versions
+        // the caret would actually be visible (QTBUG-74492) and the workaround for
+        // the Surface seems unnecessary there anyway. But leave it hidden for IME.
+        if (QOperatingSystemVersion::current() >=
+            QOperatingSystemVersion(QOperatingSystemVersion::Windows, 10, 0, 16299)) {
             ShowCaret(platformWindow->handle());
-        else
+        } else {
             HideCaret(platformWindow->handle());
+        }
         setWindowsImeEnabled(platformWindow, false);
         setWindowsImeEnabled(platformWindow, true);
     }
diff --git a/src/plugins/platforms/windows/qwindowsintegration.cpp b/src/plugins/platforms/windows/qwindowsintegration.cpp
index eccf1c4928..09117f663d 100644
--- a/src/plugins/platforms/windows/qwindowsintegration.cpp
+++ b/src/plugins/platforms/windows/qwindowsintegration.cpp
@@ -258,6 +258,8 @@ QWindowsIntegrationPrivate::QWindowsIntegrationPrivate(const QStringList &paramL
 
     m_context.initTouch(m_options);
     QPlatformCursor::setCapability(QPlatformCursor::OverrideCursor);
+
+    m_context.initPowerNotificationHandler();
 }
 
 QWindowsIntegrationPrivate::~QWindowsIntegrationPrivate()
diff --git a/src/plugins/platforms/windows/qwindowskeymapper.cpp b/src/plugins/platforms/windows/qwindowskeymapper.cpp
index 4f0f846749..e3edf7e81e 100644
--- a/src/plugins/platforms/windows/qwindowskeymapper.cpp
+++ b/src/plugins/platforms/windows/qwindowskeymapper.cpp
@@ -1019,14 +1019,14 @@ bool QWindowsKeyMapper::translateKeyEventInternal(QWindow *window, MSG msg,
                 if (dirStatus == VK_LSHIFT
                         && ((msg.wParam == VK_SHIFT && GetKeyState(VK_LCONTROL))
                             || (msg.wParam == VK_CONTROL && GetKeyState(VK_LSHIFT)))) {
-                    sendExtendedPressRelease(receiver, Qt::Key_Direction_L, nullptr,
+                    sendExtendedPressRelease(receiver, Qt::Key_Direction_L, {},
                                              scancode, vk_key, nModifiers, QString(), false);
                     result = true;
                     dirStatus = 0;
                 } else if (dirStatus == VK_RSHIFT
                            && ( (msg.wParam == VK_SHIFT && GetKeyState(VK_RCONTROL))
                                 || (msg.wParam == VK_CONTROL && GetKeyState(VK_RSHIFT)))) {
-                    sendExtendedPressRelease(receiver, Qt::Key_Direction_R, nullptr,
+                    sendExtendedPressRelease(receiver, Qt::Key_Direction_R, {},
                                              scancode, vk_key, nModifiers, QString(), false);
                     result = true;
                     dirStatus = 0;
@@ -1388,7 +1388,7 @@ QList<int> QWindowsKeyMapper::possibleKeys(const QKeyEvent *e) const
         if (key && key != baseKey && ((keyMods & neededMods) == neededMods)) {
             const Qt::KeyboardModifiers missingMods = keyMods & ~neededMods;
             const int matchedKey = int(key) + missingMods;
-            const QList<int>::iterator it =
+            const auto it =
                 std::find_if(result.begin(), result.end(),
                              [key] (int k) { return (k & ~Qt::KeyboardModifierMask) == key; });
             // QTBUG-67200: Use the match with the least modifiers (prefer
diff --git a/src/plugins/platforms/windows/qwindowsmime.cpp b/src/plugins/platforms/windows/qwindowsmime.cpp
index b9d8b191f5..1c6c999f05 100644
--- a/src/plugins/platforms/windows/qwindowsmime.cpp
+++ b/src/plugins/platforms/windows/qwindowsmime.cpp
@@ -107,7 +107,7 @@ static inline QByteArray msgConversionError(const char *func, const char *format
     msg += ": Unable to convert DIB image. The image converter plugin for '";
     msg += format;
     msg += "' is not available. Available formats: ";
-    const QList<QByteArray> &formats = QImageReader::supportedImageFormats();
+    const auto &formats = QImageReader::supportedImageFormats();
     for (const QByteArray &af : formats) {
         msg += af;
         msg += ' ';
@@ -747,7 +747,7 @@ QWindowsMimeURI::QWindowsMimeURI()
 bool QWindowsMimeURI::canConvertFromMime(const FORMATETC &formatetc, const QMimeData *mimeData) const
 {
     if (mimeData->hasUrls() && getCf(formatetc) == CF_HDROP) {
-        const QList<QUrl> urls = mimeData->urls();
+        const auto urls = mimeData->urls();
         for (const QUrl &url : urls) {
             if (url.isLocalFile())
                 return true;
@@ -760,7 +760,7 @@ bool QWindowsMimeURI::convertFromMime(const FORMATETC &formatetc, const QMimeDat
 {
     if (canConvertFromMime(formatetc, mimeData)) {
         if (getCf(formatetc) == CF_HDROP) {
-            const QList<QUrl> &urls = mimeData->urls();
+            const auto &urls = mimeData->urls();
             QStringList fileNames;
             int size = sizeof(DROPFILES)+2;
             for (const QUrl &url : urls) {
@@ -791,7 +791,7 @@ bool QWindowsMimeURI::convertFromMime(const FORMATETC &formatetc, const QMimeDat
             return setData(result, pmedium);
         }
         if (getCf(formatetc) == CF_INETURL_W) {
-            QList<QUrl> urls = mimeData->urls();
+            const auto urls = mimeData->urls();
             QByteArray result;
             if (!urls.isEmpty()) {
                 QString url = urls.at(0).toString();
@@ -803,7 +803,7 @@ bool QWindowsMimeURI::convertFromMime(const FORMATETC &formatetc, const QMimeDat
             return setData(result, pmedium);
         }
         if (getCf(formatetc) == CF_INETURL) {
-            QList<QUrl> urls = mimeData->urls();
+            const auto urls = mimeData->urls();
             QByteArray result;
             if (!urls.isEmpty())
                 result = urls.at(0).toString().toLocal8Bit();
diff --git a/src/plugins/platforms/windows/qwindowsmime.h b/src/plugins/platforms/windows/qwindowsmime.h
index 1c389e8800..f8708f1259 100644
--- a/src/plugins/platforms/windows/qwindowsmime.h
+++ b/src/plugins/platforms/windows/qwindowsmime.h
@@ -43,7 +43,6 @@
 #include <QtCore/qt_windows.h>
 
 #include <QtCore/qvector.h>
-#include <QtCore/qlist.h>
 #include <QtCore/qvariant.h>
 
 QT_BEGIN_NAMESPACE
@@ -95,7 +94,7 @@ public:
 private:
     void ensureInitialized() const;
 
-    mutable QList<QWindowsMime *> m_mimes;
+    mutable QVector<QWindowsMime *> m_mimes;
     mutable int m_internalMimeCount = 0;
 };
 
diff --git a/src/plugins/platforms/windows/qwindowsmousehandler.cpp b/src/plugins/platforms/windows/qwindowsmousehandler.cpp
index 6df5e6aa27..b776efc942 100644
--- a/src/plugins/platforms/windows/qwindowsmousehandler.cpp
+++ b/src/plugins/platforms/windows/qwindowsmousehandler.cpp
@@ -165,7 +165,7 @@ void QWindowsMouseHandler::clearEvents()
 
 Qt::MouseButtons QWindowsMouseHandler::queryMouseButtons()
 {
-    Qt::MouseButtons result = nullptr;
+    Qt::MouseButtons result;
     const bool mouseSwapped = GetSystemMetrics(SM_SWAPBUTTON);
     if (GetAsyncKeyState(VK_LBUTTON) < 0)
         result |= mouseSwapped ? Qt::RightButton: Qt::LeftButton;
@@ -630,7 +630,7 @@ bool QWindowsMouseHandler::translateTouchEvent(QWindow *window, HWND,
 
     QTouchPointList touchPoints;
     touchPoints.reserve(winTouchPointCount);
-    Qt::TouchPointStates allStates = nullptr;
+    Qt::TouchPointStates allStates;
 
     GetTouchInputInfo(reinterpret_cast<HTOUCHINPUT>(msg.lParam),
                       UINT(msg.wParam), winTouchInputs.data(), sizeof(TOUCHINPUT));
diff --git a/src/plugins/platforms/windows/qwindowspointerhandler.cpp b/src/plugins/platforms/windows/qwindowspointerhandler.cpp
index cffd8427a2..fba24d8696 100644
--- a/src/plugins/platforms/windows/qwindowspointerhandler.cpp
+++ b/src/plugins/platforms/windows/qwindowspointerhandler.cpp
@@ -482,7 +482,7 @@ bool QWindowsPointerHandler::translateTouchEvent(QWindow *window, HWND hwnd,
                 << " message=" << Qt::hex << msg.message
                 << " count=" << Qt::dec << count;
 
-    Qt::TouchPointStates allStates = nullptr;
+    Qt::TouchPointStates allStates;
 
     for (quint32 i = 0; i < count; ++i) {
         if (QWindowsContext::verbose > 1)
@@ -579,7 +579,9 @@ bool QWindowsPointerHandler::translatePenEvent(QWindow *window, HWND hwnd, QtWin
 
     const QTabletEvent::TabletDevice device = QTabletEvent::Stylus;
     QTabletEvent::PointerType type;
-    Qt::MouseButtons mouseButtons;
+    // Since it may be the middle button, so if the checks fail then it should
+    // be set to Middle if it was used.
+    Qt::MouseButtons mouseButtons = queryMouseButtons();
 
     const bool pointerInContact = IS_POINTER_INCONTACT_WPARAM(msg.wParam);
     if (pointerInContact)
diff --git a/src/plugins/platforms/windows/qwindowsscreen.cpp b/src/plugins/platforms/windows/qwindowsscreen.cpp
index df63adf558..4f76a82544 100644
--- a/src/plugins/platforms/windows/qwindowsscreen.cpp
+++ b/src/plugins/platforms/windows/qwindowsscreen.cpp
@@ -73,7 +73,7 @@ static inline QDpi monitorDPI(HMONITOR hMonitor)
     return {0, 0};
 }
 
-using WindowsScreenDataList = QList<QWindowsScreenData>;
+using WindowsScreenDataList = QVector<QWindowsScreenData>;
 
 static bool monitorData(HMONITOR hMonitor, QWindowsScreenData *data)
 {
@@ -467,7 +467,7 @@ bool QWindowsScreenManager::handleDisplayChange(WPARAM wParam, LPARAM lParam)
     return false;
 }
 
-static inline int indexOfMonitor(const QList<QWindowsScreen *> &screens,
+static inline int indexOfMonitor(const QWindowsScreenManager::WindowsScreenList &screens,
                                  const QString &monitorName)
 {
     for (int i= 0; i < screens.size(); ++i)
@@ -476,7 +476,7 @@ static inline int indexOfMonitor(const QList<QWindowsScreen *> &screens,
     return -1;
 }
 
-static inline int indexOfMonitor(const QList<QWindowsScreenData> &screenData,
+static inline int indexOfMonitor(const WindowsScreenDataList &screenData,
                                  const QString &monitorName)
 {
     for (int i = 0; i < screenData.size(); ++i)
diff --git a/src/plugins/platforms/windows/qwindowsscreen.h b/src/plugins/platforms/windows/qwindowsscreen.h
index 2fd56f53cf..5c095808f2 100644
--- a/src/plugins/platforms/windows/qwindowsscreen.h
+++ b/src/plugins/platforms/windows/qwindowsscreen.h
@@ -127,7 +127,7 @@ private:
 class QWindowsScreenManager
 {
 public:
-    using WindowsScreenList = QList<QWindowsScreen *>;
+    using WindowsScreenList = QVector<QWindowsScreen *>;
 
     QWindowsScreenManager();
 
diff --git a/src/plugins/platforms/windows/qwindowstheme.cpp b/src/plugins/platforms/windows/qwindowstheme.cpp
index 40f9652cbd..32a65109af 100644
--- a/src/plugins/platforms/windows/qwindowstheme.cpp
+++ b/src/plugins/platforms/windows/qwindowstheme.cpp
@@ -164,7 +164,7 @@ public:
         QMutexLocker readyLocker(&m_readyMutex);
         while (!m_cancelled.loadRelaxed()) {
             if (!m_params && !m_cancelled.loadRelaxed()
-                && !m_readyCondition.wait(&m_readyMutex, 1000))
+                && !m_readyCondition.wait(&m_readyMutex, QDeadlineTimer(1000ll)))
                 continue;
 
             if (m_params) {
@@ -189,7 +189,7 @@ public:
             CoUninitialize();
     }
 
-    bool runWithParams(QShGetFileInfoParams *params, unsigned long timeOutMSecs)
+    bool runWithParams(QShGetFileInfoParams *params, qint64 timeOutMSecs)
     {
         QMutexLocker doneLocker(&m_doneMutex);
 
@@ -198,7 +198,7 @@ public:
         m_readyCondition.wakeAll();
         m_readyMutex.unlock();
 
-        return m_doneCondition.wait(&m_doneMutex, timeOutMSecs);
+        return m_doneCondition.wait(&m_doneMutex, QDeadlineTimer(timeOutMSecs));
     }
 
     void cancel()
@@ -220,7 +220,7 @@ private:
 
 static bool shGetFileInfoBackground(const QString &fileName, DWORD attributes,
                                     SHFILEINFO *info, UINT flags,
-                                    unsigned long  timeOutMSecs = 5000)
+                                    qint64 timeOutMSecs = 5000)
 {
     static QShGetFileInfoThread *getFileInfoThread = nullptr;
     if (!getFileInfoThread) {
diff --git a/src/plugins/platforms/windows/qwindowstheme.h b/src/plugins/platforms/windows/qwindowstheme.h
index 07120230ce..7a8c321da4 100644
--- a/src/plugins/platforms/windows/qwindowstheme.h
+++ b/src/plugins/platforms/windows/qwindowstheme.h
@@ -71,7 +71,7 @@ public:
 
     QPixmap standardPixmap(StandardPixmap sp, const QSizeF &size) const override;
 
-    QIcon fileIcon(const QFileInfo &fileInfo, QPlatformTheme::IconOptions iconOptions = nullptr) const override;
+    QIcon fileIcon(const QFileInfo &fileInfo, QPlatformTheme::IconOptions iconOptions = {}) const override;
 
     void windowsThemeChanged(QWindow *window);
     void displayChanged() { refreshIconPixmapSizes(); }
diff --git a/src/plugins/platforms/windows/qwindowswindow.cpp b/src/plugins/platforms/windows/qwindowswindow.cpp
index 5c13bd9650..c3b7a92df9 100644
--- a/src/plugins/platforms/windows/qwindowswindow.cpp
+++ b/src/plugins/platforms/windows/qwindowswindow.cpp
@@ -592,7 +592,7 @@ static QPoint calcPosition(const QWindow *w, const QWindowCreationContextPtr &co
         return posFrame;
 
     // Find the original screen containing the coordinates.
-    const QList<QScreen *> screens = screenForGL->virtualSiblings();
+    const auto screens = screenForGL->virtualSiblings();
     const QScreen *orgScreen = nullptr;
     for (QScreen *screen : screens) {
         if (screen->handle()->availableGeometry().contains(posFrame)) {
@@ -759,7 +759,10 @@ QWindowsWindowData
 
     const QString windowClassName = QWindowsContext::instance()->registerWindowClass(w);
 
-    const QRect rect = QPlatformWindow::initialGeometry(w, data.geometry, defaultWindowWidth, defaultWindowHeight);
+    const QScreen *screen{};
+    const QRect rect = QPlatformWindow::initialGeometry(w, data.geometry,
+                                                        defaultWindowWidth, defaultWindowHeight,
+                                                        &screen);
 
     if (title.isEmpty() && (result.flags & Qt::WindowTitleHint))
         title = topLevel ? qAppName() : w->objectName();
@@ -769,7 +772,9 @@ QWindowsWindowData
 
     // Capture events before CreateWindowEx() returns. The context is cleared in
     // the QWindowsWindow constructor.
-    const QWindowCreationContextPtr context(new QWindowCreationContext(w, data.geometry, rect, data.customMargins, style, exStyle));
+    const QWindowCreationContextPtr context(new QWindowCreationContext(w, screen, data.geometry,
+                                                                       rect, data.customMargins,
+                                                                       style, exStyle));
     QWindowsContext::instance()->setWindowCreationContext(context);
 
     const bool hasFrame = (style & (WS_DLGFRAME | WS_THICKFRAME));
@@ -879,10 +884,10 @@ void WindowCreationData::initialize(const QWindow *w, HWND hwnd, bool frameChang
 
 
 // Scaling helpers for size constraints.
-static QSize toNativeSizeConstrained(QSize dip, const QWindow *w)
+static QSize toNativeSizeConstrained(QSize dip, const QScreen *s)
 {
     if (QHighDpiScaling::isActive()) {
-        const qreal factor = QHighDpiScaling::factor(w);
+        const qreal factor = QHighDpiScaling::factor(s);
         if (!qFuzzyCompare(factor, qreal(1))) {
             if (dip.width() > 0 && dip.width() < QWINDOWSIZE_MAX)
                 dip.setWidth(qRound(qreal(dip.width()) * factor));
@@ -995,11 +1000,12 @@ bool QWindowsGeometryHint::handleCalculateSize(const QMargins &customMargins, co
     return true;
 }
 
-void QWindowsGeometryHint::frameSizeConstraints(const QWindow *w, const QMargins &margins,
+void QWindowsGeometryHint::frameSizeConstraints(const QWindow *w, const QScreen *screen,
+                                                const QMargins &margins,
                                                 QSize *minimumSize, QSize *maximumSize)
 {
-    *minimumSize = toNativeSizeConstrained(w->minimumSize(), w);
-    *maximumSize = toNativeSizeConstrained(w->maximumSize(), w);
+    *minimumSize = toNativeSizeConstrained(w->minimumSize(), screen);
+    *maximumSize = toNativeSizeConstrained(w->maximumSize(), screen);
 
     const int maximumWidth = qMax(maximumSize->width(), minimumSize->width());
     const int maximumHeight = qMax(maximumSize->height(), minimumSize->height());
@@ -1017,12 +1023,13 @@ void QWindowsGeometryHint::frameSizeConstraints(const QWindow *w, const QMargins
 }
 
 void QWindowsGeometryHint::applyToMinMaxInfo(const QWindow *w,
+                                             const QScreen *screen,
                                              const QMargins &margins,
                                              MINMAXINFO *mmi)
 {
     QSize minimumSize;
     QSize maximumSize;
-    frameSizeConstraints(w, margins, &minimumSize, &maximumSize);
+    frameSizeConstraints(w, screen, margins, &minimumSize, &maximumSize);
     qCDebug(lcQpaWindows).nospace() << '>' << __FUNCTION__ << '<' << " min="
         << minimumSize.width() << ',' << minimumSize.height()
         << " max=" << maximumSize.width() << ',' << maximumSize.height()
@@ -1041,6 +1048,13 @@ void QWindowsGeometryHint::applyToMinMaxInfo(const QWindow *w,
     qCDebug(lcQpaWindows).nospace() << '<' << __FUNCTION__ << " out " << *mmi;
 }
 
+void QWindowsGeometryHint::applyToMinMaxInfo(const QWindow *w,
+                                             const QMargins &margins,
+                                             MINMAXINFO *mmi)
+{
+    applyToMinMaxInfo(w, w->screen(), margins, mmi);
+}
+
 bool QWindowsGeometryHint::positionIncludesFrame(const QWindow *w)
 {
     return qt_window_private(const_cast<QWindow *>(w))->positionPolicy
@@ -1226,11 +1240,12 @@ void QWindowsForeignWindow::setVisible(bool visible)
     \ingroup qt-lighthouse-win
 */
 
-QWindowCreationContext::QWindowCreationContext(const QWindow *w,
+QWindowCreationContext::QWindowCreationContext(const QWindow *w, const QScreen *s,
                                                const QRect &geometryIn, const QRect &geometry,
                                                const QMargins &cm,
                                                DWORD style, DWORD exStyle) :
     window(w),
+    screen(s),
     requestedGeometryIn(geometryIn),
     requestedGeometry(geometry),
     obtainedPos(geometryIn.topLeft()),
@@ -1270,7 +1285,7 @@ QWindowCreationContext::QWindowCreationContext(const QWindow *w,
 
 void QWindowCreationContext::applyToMinMaxInfo(MINMAXINFO *mmi) const
 {
-    QWindowsGeometryHint::applyToMinMaxInfo(window, margins + customMargins, mmi);
+    QWindowsGeometryHint::applyToMinMaxInfo(window, screen, margins + customMargins, mmi);
 }
 
 /*!
diff --git a/src/plugins/platforms/windows/qwindowswindow.h b/src/plugins/platforms/windows/qwindowswindow.h
index 7efbcf900c..1f8800272b 100644
--- a/src/plugins/platforms/windows/qwindowswindow.h
+++ b/src/plugins/platforms/windows/qwindowswindow.h
@@ -66,9 +66,12 @@ struct QWindowsGeometryHint
     static QMargins frame(const QWindow *w, const QRect &geometry,
                           DWORD style, DWORD exStyle);
     static bool handleCalculateSize(const QMargins &customMargins, const MSG &msg, LRESULT *result);
+    static void applyToMinMaxInfo(const QWindow *w, const QScreen *screen,
+                                  const QMargins &margins, MINMAXINFO *mmi);
     static void applyToMinMaxInfo(const QWindow *w, const QMargins &margins,
                                   MINMAXINFO *mmi);
-    static void frameSizeConstraints(const QWindow *w, const QMargins &margins,
+    static void frameSizeConstraints(const QWindow *w, const QScreen *screen,
+                                     const QMargins &margins,
                                      QSize *minimumSize, QSize *maximumSize);
     static inline QPoint mapToGlobal(HWND hwnd, const QPoint &);
     static inline QPoint mapToGlobal(const QWindow *w, const QPoint &);
@@ -80,13 +83,16 @@ struct QWindowsGeometryHint
 
 struct QWindowCreationContext
 {
-    explicit QWindowCreationContext(const QWindow *w,
+    explicit QWindowCreationContext(const QWindow *w, const QScreen *s,
                                     const QRect &geometryIn, const QRect &geometry,
                                     const QMargins &customMargins,
                                     DWORD style, DWORD exStyle);
     void applyToMinMaxInfo(MINMAXINFO *mmi) const;
 
     const QWindow *window;
+    // The screen to use to scale size constraints, etc. Might differ from the
+    // screen of the window after QPlatformWindow::initialGeometry() (QTBUG-77307).
+    const QScreen *screen;
     QRect requestedGeometryIn; // QWindow scaled
     QRect requestedGeometry; // after QPlatformWindow::initialGeometry()
     QPoint obtainedPos;
diff --git a/src/plugins/platforms/windows/uiautomation/qwindowsuiamainprovider.cpp b/src/plugins/platforms/windows/uiautomation/qwindowsuiamainprovider.cpp
index b2b401dd40..f589fd6b10 100644
--- a/src/plugins/platforms/windows/uiautomation/qwindowsuiamainprovider.cpp
+++ b/src/plugins/platforms/windows/uiautomation/qwindowsuiamainprovider.cpp
@@ -277,8 +277,9 @@ HRESULT QWindowsUiaMainProvider::GetPatternProvider(PATTERNID idPattern, IUnknow
         }
         break;
     case UIA_ValuePatternId:
-        // All accessible controls return text(QAccessible::Value) (which may be empty).
-        *pRetVal = new QWindowsUiaValueProvider(id());
+        // All non-static controls support the Value pattern.
+        if (accessible->role() != QAccessible::StaticText)
+            *pRetVal = new QWindowsUiaValueProvider(id());
         break;
     case UIA_RangeValuePatternId:
         // Controls providing a numeric value within a range (e.g., sliders, scroll bars, dials).
diff --git a/src/plugins/platforms/windows/uiautomation/qwindowsuiaselectionprovider.cpp b/src/plugins/platforms/windows/uiautomation/qwindowsuiaselectionprovider.cpp
index 3305e9c5c4..fb41012cf4 100644
--- a/src/plugins/platforms/windows/uiautomation/qwindowsuiaselectionprovider.cpp
+++ b/src/plugins/platforms/windows/uiautomation/qwindowsuiaselectionprovider.cpp
@@ -49,6 +49,7 @@
 #include <QtCore/qloggingcategory.h>
 #include <QtCore/qstring.h>
 #include <QtCore/qlist.h>
+#include <QtCore/qvector.h>
 
 QT_BEGIN_NAMESPACE
 
@@ -78,7 +79,7 @@ HRESULT STDMETHODCALLTYPE QWindowsUiaSelectionProvider::GetSelection(SAFEARRAY *
         return UIA_E_ELEMENTNOTAVAILABLE;
 
     // First put selected items in a list, then build a safe array with the right size.
-    QList<QAccessibleInterface *> selectedList;
+    QVector<QAccessibleInterface *> selectedList;
     for (int i = 0; i < accessible->childCount(); ++i) {
         if (QAccessibleInterface *child = accessible->child(i)) {
             if (child->state().selected) {
diff --git a/src/plugins/platforms/windows/uiautomation/qwindowsuiatableitemprovider.cpp b/src/plugins/platforms/windows/uiautomation/qwindowsuiatableitemprovider.cpp
index 2a94012590..1348ec7cc0 100644
--- a/src/plugins/platforms/windows/uiautomation/qwindowsuiatableitemprovider.cpp
+++ b/src/plugins/platforms/windows/uiautomation/qwindowsuiatableitemprovider.cpp
@@ -80,7 +80,7 @@ HRESULT STDMETHODCALLTYPE QWindowsUiaTableItemProvider::GetRowHeaderItems(SAFEAR
     if (!tableCellInterface)
         return UIA_E_ELEMENTNOTAVAILABLE;
 
-    QList<QAccessibleInterface *> headers = tableCellInterface->rowHeaderCells();
+    const auto headers = tableCellInterface->rowHeaderCells();
 
     if ((*pRetVal = SafeArrayCreateVector(VT_UNKNOWN, 0, headers.size()))) {
         for (LONG i = 0; i < headers.size(); ++i) {
@@ -110,7 +110,7 @@ HRESULT STDMETHODCALLTYPE QWindowsUiaTableItemProvider::GetColumnHeaderItems(SAF
     if (!tableCellInterface)
         return UIA_E_ELEMENTNOTAVAILABLE;
 
-    QList<QAccessibleInterface *> headers = tableCellInterface->columnHeaderCells();
+    const auto headers = tableCellInterface->columnHeaderCells();
 
     if ((*pRetVal = SafeArrayCreateVector(VT_UNKNOWN, 0, headers.size()))) {
         for (LONG i = 0; i < headers.size(); ++i) {