one more change from Qt 6.8.2

qtbase/src/corelib/thread/qmutex.cpp

@@ -637,6 +637,7 @@ void QRecursiveMutex::unlock() noexcept
 /*!
     \internal helper for lock()
  */
+Q_NEVER_INLINE
 void QBasicMutex::lockInternal() QT_MUTEX_LOCK_NOEXCEPT
 {
     if (futexAvailable()) {
@@ -670,6 +671,7 @@ bool QBasicMutex::lockInternal(int timeout) QT_MUTEX_LOCK_NOEXCEPT
 /*!
     \internal helper for tryLock(QDeadlineTimer)
  */
+Q_NEVER_INLINE
 bool QBasicMutex::lockInternal(QDeadlineTimer deadlineTimer) QT_MUTEX_LOCK_NOEXCEPT
 {
     if (deadlineTimer.hasExpired())
@@ -809,6 +811,7 @@ bool QBasicMutex::lockInternal(QDeadlineTimer deadlineTimer) QT_MUTEX_LOCK_NOEXC
 /*!
     \internal
 */
+Q_NEVER_INLINE
 void QBasicMutex::unlockInternal() noexcept
 {
     QMutexPrivate *copy = d_ptr.loadAcquire();

qtbase/src/corelib/thread/qthread_win.cpp

@@ -11,6 +11,7 @@
 
 #include <private/qcoreapplication_p.h>
 #include <private/qeventdispatcher_win_p.h>
+#include "qloggingcategory.h"
 
 #include <qt_windows.h>
 
@@ -352,7 +353,6 @@ void QThreadPrivate::finish(bool lockAnyway) noexcept
     if (lockAnyway)
         locker.unlock();
     emit thr->finished(QThread::QPrivateSignal());
-    qCDebug(lcDeleteLater) << "Sending deferred delete events as part of finishing thread" << thr;
     QCoreApplicationPrivate::sendPostedEvents(nullptr, QEvent::DeferredDelete, d->data);
     QThreadStorageData::finish(tls_data);
     if (lockAnyway)

qtbase/src/gui/rhi/qrhid3d12.cpp

@@ -5697,7 +5697,16 @@ bool QD3D12GraphicsPipeline::create()
     }
 
     QD3D12RenderPassDescriptor *rpD = QRHI_RES(QD3D12RenderPassDescriptor, m_renderPassDesc);
-    const DXGI_SAMPLE_DESC sampleDesc = rhiD->effectiveSampleDesc(m_sampleCount, DXGI_FORMAT(rpD->colorFormat[0]));
+    DXGI_FORMAT format = DXGI_FORMAT_UNKNOWN;
+    if (rpD->colorAttachmentCount > 0) {
+        format = DXGI_FORMAT(rpD->colorFormat[0]);
+    } else if (rpD->hasDepthStencil) {
+        format = DXGI_FORMAT(rpD->dsFormat);
+    } else {
+        qWarning("Cannot create graphics pipeline state without color or depthStencil format");
+        return false;
+    }
+    const DXGI_SAMPLE_DESC sampleDesc = rhiD->effectiveSampleDesc(m_sampleCount, format);
 
     struct {
         QD3D12PipelineStateSubObject<ID3D12RootSignature *, D3D12_PIPELINE_STATE_SUBOBJECT_TYPE_ROOT_SIGNATURE> rootSig;

qtbase/src/plugins/platforms/windows/qwindowsintegration.cpp

@@ -134,29 +134,6 @@ bool parseIntOption(const QString &parameter,const QLatin1StringView &option,
 using DarkModeHandlingFlag = QNativeInterface::Private::QWindowsApplication::DarkModeHandlingFlag;
 using DarkModeHandling = QNativeInterface::Private::QWindowsApplication::DarkModeHandling;
 
-typedef LONG (WINAPI *RtlGetVersionPtr)(PRTL_OSVERSIONINFOW);
-
-bool isWindows81() {
-    HMODULE hNtdll = GetModuleHandleA("ntdll.dll");
-    if (!hNtdll) {
-        return false; // Failed to load ntdll.dll
-    }
-
-    RtlGetVersionPtr RtlGetVersion = (RtlGetVersionPtr)GetProcAddress(hNtdll, "RtlGetVersion");
-    if (!RtlGetVersion) {
-        return false; // Failed to get RtlGetVersion
-    }
-
-    RTL_OSVERSIONINFOW rovi = {0};
-    rovi.dwOSVersionInfoSize = sizeof(rovi);
-
-    if (RtlGetVersion(&rovi) == 0) { // STATUS_SUCCESS
-        return (rovi.dwMajorVersion == 6 && rovi.dwMinorVersion == 3);
-    }
-
-    return false; // Unknown version
-}
-
 static inline unsigned parseOptions(const QStringList &paramList,
                                     int *tabletAbsoluteRange,
                                     QtWindows::DpiAwareness *dpiAwareness,
@@ -164,12 +141,6 @@ static inline unsigned parseOptions(const QStringList &paramList,
 {
     unsigned options = 0;
 
-    // for some reason DirectWrite fonts don't work on Windows 8.1
-    // https://github.com/crystalidea/qt6windows7/issues/26
-
-    if (isWindows81())
-        options |= QWindowsIntegration::DontUseDirectWriteFonts;
-
     for (const QString &param : paramList) {
         if (param.startsWith(u"fontengine=")) {
             if (param.endsWith(u"gdi")) {
@@ -515,7 +486,14 @@ QPlatformFontDatabase *QWindowsIntegration::fontDatabase() const
         else
 #endif // QT_NO_FREETYPE
 #if QT_CONFIG(directwrite3)
-        if (!(d->m_options & (QWindowsIntegration::FontDatabaseGDI | QWindowsIntegration::DontUseDirectWriteFonts)))
+
+        /* IDWriteFontFace3 is only reportedly available starting with Windows 10. This change is necessary starting
+        with Qt 6.8, where DirectWrite is used by default to populate the font database. 
+        More info: https://github.com/videolan/vlc/blob/master/contrib/src/qt/0001-Use-DirectWrite-font-database-only-with-Windows-10-a.patch
+        */
+
+        if (QOperatingSystemVersion::current() >= QOperatingSystemVersion::Windows10 &&
+            !(d->m_options & (QWindowsIntegration::FontDatabaseGDI | QWindowsIntegration::DontUseDirectWriteFonts)))
             d->m_fontDatabase = new QWindowsDirectWriteFontDatabase;
         else
 #endif

qtbase/src/plugins/platforms/windows/qwindowskeymapper.cpp

@@ -1359,6 +1359,11 @@ QList<QKeyCombination> QWindowsKeyMapper::possibleKeyCombinations(const QKeyEven
         return result;
     }
 
+    // If Key_Tab+Shift is pressed we add Key_Backtab without
+    // shift modifier as a possible combination too
+    if (baseKey == Qt::Key_Tab && (keyMods & Qt::ShiftModifier))
+        result << (Qt::Key_Backtab | (keyMods & ~Qt::ShiftModifier));
+
     // The base key is _always_ valid, of course
     result << QKeyCombination::fromCombined(int(baseKey) + int(keyMods));
 

qtbase/src/plugins/platforms/windows/qwindowsscreen.cpp

@@ -132,12 +132,12 @@ namespace {
 struct DiRegKeyHandleTraits
 {
     using Type = HKEY;
-    static Type invalidValue()
+    static Type invalidValue() noexcept
     {
         // The setupapi.h functions return INVALID_HANDLE_VALUE when failing to open a registry key
         return reinterpret_cast<HKEY>(INVALID_HANDLE_VALUE);
     }
-    static bool close(Type handle) { return RegCloseKey(handle) == ERROR_SUCCESS; }
+    static bool close(Type handle) noexcept { return RegCloseKey(handle) == ERROR_SUCCESS; }
 };
 
 using DiRegKeyHandle = QUniqueHandle<DiRegKeyHandleTraits>;
@@ -145,11 +145,11 @@ using DiRegKeyHandle = QUniqueHandle<DiRegKeyHandleTraits>;
 struct DevInfoHandleTraits
 {
     using Type = HDEVINFO;
-    static Type invalidValue()
+    static Type invalidValue() noexcept
     {
         return reinterpret_cast<HDEVINFO>(INVALID_HANDLE_VALUE);
     }
-    static bool close(Type handle) { return SetupDiDestroyDeviceInfoList(handle) == TRUE; }
+    static bool close(Type handle) noexcept { return SetupDiDestroyDeviceInfoList(handle) == TRUE; }
 };
 
 using DevInfoHandle = QUniqueHandle<DevInfoHandleTraits>;

qtbase/src/plugins/platforms/windows/qwindowstheme.cpp

@@ -843,7 +843,6 @@ QPixmap QWindowsTheme::standardPixmap(StandardPixmap sp, const QSizeF &pixmapSiz
 {
     int resourceId = -1;
     SHSTOCKICONID stockId = SIID_INVALID;
-    UINT stockFlags = 0;
     LPCTSTR iconName = nullptr;
     switch (sp) {
     case DriveCDIcon:
@@ -867,14 +866,12 @@ QPixmap QWindowsTheme::standardPixmap(StandardPixmap sp, const QSizeF &pixmapSiz
         resourceId = 7;
         break;
     case FileLinkIcon:
-        stockFlags = SHGSI_LINKOVERLAY;
         Q_FALLTHROUGH();
     case FileIcon:
         stockId = SIID_DOCNOASSOC;
         resourceId = 1;
         break;
     case DirLinkIcon:
-        stockFlags = SHGSI_LINKOVERLAY;
         Q_FALLTHROUGH();
     case DirClosedIcon:
     case DirIcon:
@@ -888,7 +885,6 @@ QPixmap QWindowsTheme::standardPixmap(StandardPixmap sp, const QSizeF &pixmapSiz
         resourceId = 16;
         break;
     case DirLinkOpenIcon:
-        stockFlags = SHGSI_LINKOVERLAY;
         Q_FALLTHROUGH();
     case DirOpenIcon:
         stockId = SIID_FOLDEROPEN;
@@ -928,18 +924,34 @@ QPixmap QWindowsTheme::standardPixmap(StandardPixmap sp, const QSizeF &pixmapSiz
         break;
     }
 
+    // Even with SHGSI_LINKOVERLAY flag set, loaded Icon with SHDefExtractIcon doesn't have
+    // any overlay, so we avoid SHGSI_LINKOVERLAY flag and draw it manually (QTBUG-131843)
+    const auto drawLinkOverlayIconIfNeeded = [](StandardPixmap sp, QPixmap &pixmap, QSizeF pixmapSize) {
+        if (sp == FileLinkIcon || sp == DirLinkIcon || sp == DirLinkOpenIcon) {
+            QPainter painter(&pixmap);
+            const QSizeF linkSize = pixmapSize / (pixmapSize.height() >= 48 ? 3 : 2);
+            static constexpr auto LinkOverlayIconId = 16769;
+            const QPixmap link = loadIconFromShell32(LinkOverlayIconId, linkSize.toSize());
+            const int yPos = pixmap.height() - link.size().height();
+            painter.drawPixmap(0, yPos, int(linkSize.width()), int(linkSize.height()), link);
+        }
+    };
+
     if (stockId != SIID_INVALID) {
         SHSTOCKICONINFO iconInfo;
         memset(&iconInfo, 0, sizeof(iconInfo));
         iconInfo.cbSize = sizeof(iconInfo);
-        stockFlags |= SHGSI_ICONLOCATION;
+        constexpr UINT stockFlags = SHGSI_ICONLOCATION;
         if (SHGetStockIconInfo(stockId, stockFlags, &iconInfo) == S_OK) {
             const auto iconSize = pixmapSize.width();
             HICON icon;
             if (SHDefExtractIcon(iconInfo.szPath, iconInfo.iIcon, 0, &icon, nullptr, iconSize) == S_OK) {
                 QPixmap pixmap = qt_pixmapFromWinHICON(icon);
                 DestroyIcon(icon);
-                return pixmap;
+                if (!pixmap.isNull()) {
+                    drawLinkOverlayIconIfNeeded(sp, pixmap, pixmap.size());
+                    return pixmap;
+                }
             }
         }
     }
@@ -947,11 +959,7 @@ QPixmap QWindowsTheme::standardPixmap(StandardPixmap sp, const QSizeF &pixmapSiz
     if (resourceId != -1) {
         QPixmap pixmap = loadIconFromShell32(resourceId, pixmapSize);
         if (!pixmap.isNull()) {
-            if (sp == FileLinkIcon || sp == DirLinkIcon || sp == DirLinkOpenIcon) {
-                QPainter painter(&pixmap);
-                QPixmap link = loadIconFromShell32(30, pixmapSize);
-                painter.drawPixmap(0, 0, int(pixmapSize.width()), int(pixmapSize.height()), link);
-            }
+            drawLinkOverlayIconIfNeeded(sp, pixmap, pixmapSize);
             return pixmap;
         }
     }

qtbase/src/plugins/platforms/windows/qwindowswindow.cpp

@@ -1405,7 +1405,7 @@ void QWindowsForeignWindow::setParent(const QPlatformWindow *newParentWindow)
     qCDebug(lcQpaWindow) << __FUNCTION__ << window() << "newParent="
         << newParentWindow << newParent << "oldStyle=" << debugWinStyle(oldStyle);
 
-    auto updateWindowFlags = [=]{
+    auto updateWindowFlags = [&]{
         // Top level window flags need to be set/cleared manually.
         DWORD newStyle = oldStyle;
         if (isTopLevel) {

qtbase/src/plugins/platforms/windows/uiautomation/qwindowsuiamainprovider.cpp

@@ -363,7 +363,7 @@ void QWindowsUiaMainProvider::fillVariantArrayForRelation(QAccessibleInterface*
 {
     Q_ASSERT(accessible);
 
-    typedef QPair<QAccessibleInterface*, QAccessible::Relation> RelationPair;
+    typedef std::pair<QAccessibleInterface*, QAccessible::Relation> RelationPair;
     const QList<RelationPair> relationInterfaces = accessible->relations(relation);
     if (relationInterfaces.empty())
         return;