Remove dead code from Qt 4 times

The benefit of keeping this code around was to inspire or inform
changes in the areas to take into account possibly missing features
in Qt 5, but at this point that benefit is questionable. We can
always use the history to learn about missing pieces if needed.

Change-Id: I87a02dc451e9027be9b97554427bf8a1c6b2c025
Reviewed-by: Tor Arne Vestbø <tor.arne.vestbo@qt.io>

6 files changed, 24 insertions, 649 deletions

diff --git a/src/widgets/kernel/qapplication_p.h b/src/widgets/kernel/qapplication_p.h
index 36c0ba8739..3167bd423f 100644
--- a/src/widgets/kernel/qapplication_p.h
+++ b/src/widgets/kernel/qapplication_p.h
@@ -112,16 +112,9 @@ public:
     virtual bool shouldQuit() override;
     bool tryCloseAllWindows() override;
 
-#if 0 // Used to be included in Qt4 for Q_WS_X11
-#if QT_CONFIG(settings)
-    static bool x11_apply_settings();
-#endif
-    static void reset_instance_pointer();
-#endif
     static bool autoSipEnabled;
     static QString desktopStyleKey();
 
-
     void createEventDispatcher() override;
     static void dispatchEnterLeave(QWidget *enter, QWidget *leave, const QPointF &globalPosF);
 
@@ -132,10 +125,7 @@ public:
     static bool isBlockedByModal(QWidget *widget);
     static bool modalState();
     static bool tryModalHelper(QWidget *widget, QWidget **rettop = nullptr);
-#if 0 // Used to be included in Qt4 for Q_WS_MAC
-    static QWidget *tryModalHelper_sys(QWidget *top);
-    bool canQuit();
-#endif
+
 #ifdef QT_KEYPAD_NAVIGATION
     static bool keypadNavigationEnabled()
     {
@@ -146,18 +136,10 @@ public:
 
     bool notify_helper(QObject *receiver, QEvent * e);
 
-    void init(
-#if 0 // Used to be included in Qt4 for Q_WS_X11
-                   Display *dpy = 0, Qt::HANDLE visual = 0, Qt::HANDLE cmap = 0
-#endif
-                   );
+    void init();
     void initialize();
     void process_cmdline();
 
-#if 0 // Used to be included in Qt4 for Q_WS_X11
-    static void x11_initialize_style();
-#endif
-
     static bool inPopupMode();
     bool popupActive() override { return inPopupMode(); }
     void closePopup(QWidget *popup);
@@ -212,10 +194,6 @@ public:
     static void initializeWidgetFontHash();
     static void setSystemFont(const QFont &font);
 
-#if 0 // Used to be included in Qt4 for Q_WS_X11
-    static void applyX11SpecificCommandLineArguments(QWidget *main_widget);
-#endif
-
     static QApplicationPrivate *instance() { return self; }
 
 #ifdef QT_KEYPAD_NAVIGATION
@@ -223,10 +201,6 @@ public:
     static Qt::NavigationMode navigationMode;
 #endif
 
-#if 0 /* Used to be included in Qt4 for Q_WS_MAC */ || 0 /* Used to be included in Qt4 for Q_WS_X11 */
-    void _q_alertTimeOut();
-    QHash<QWidget *, QTimer *> alertTimerHash;
-#endif
 #ifndef QT_NO_STYLE_STYLESHEET
     static QString styleSheet;
 #endif
@@ -263,14 +237,6 @@ public:
     QGestureManager *gestureManager;
     QWidget *gestureWidget;
 #endif
-#if 0 /* Used to be included in Qt4 for Q_WS_X11 */ || 0 /* Used to be included in Qt4 for Q_WS_WIN */
-    QPixmap *move_cursor;
-    QPixmap *copy_cursor;
-    QPixmap *link_cursor;
-#endif
-#if 0 // Used to be included in Qt4 for Q_WS_WIN
-    QPixmap *ignore_cursor;
-#endif
 
     static bool updateTouchPointsForWidget(QWidget *widget, QTouchEvent *touchEvent);
     void initializeMultitouch();
@@ -299,14 +265,7 @@ private:
     static bool isAlien(QWidget *);
 };
 
-#if 0 // Used to be included in Qt4 for Q_WS_WIN
-  extern void qt_win_set_cursor(QWidget *, bool);
-#elif 0 // Used to be included in Qt4 for Q_WS_X11
-  extern void qt_x11_enforce_cursor(QWidget *, bool);
-  extern void qt_x11_enforce_cursor(QWidget *);
-#else
-  extern void qt_qpa_set_cursor(QWidget * w, bool force);
-#endif
+extern void qt_qpa_set_cursor(QWidget * w, bool force);
 
 QT_END_NAMESPACE
 
diff --git a/src/widgets/kernel/qgesturemanager.cpp b/src/widgets/kernel/qgesturemanager.cpp
index 1555c2a73a..d9d071a31a 100644
--- a/src/widgets/kernel/qgesturemanager.cpp
+++ b/src/widgets/kernel/qgesturemanager.cpp
@@ -54,9 +54,6 @@
 #ifdef Q_OS_OSX
 #include "qmacgesturerecognizer_p.h"
 #endif
-#if 0 /* Used to be included in Qt4 for Q_WS_WIN */ && !defined(QT_NO_NATIVE_GESTURES)
-#include "qwinnativepangesturerecognizer_win_p.h"
-#endif
 
 #include "qdebug.h"
 #include <QtCore/QLoggingCategory>
@@ -102,14 +99,7 @@ QGestureManager::QGestureManager(QObject *parent)
     registerGestureRecognizer(new QSwipeGestureRecognizer);
     registerGestureRecognizer(new QTapGestureRecognizer);
 #endif
-#if 0 // Used to be included in Qt4 for Q_WS_WIN
-  #if !defined(QT_NO_NATIVE_GESTURES)
-    if (QApplicationPrivate::HasTouchSupport)
-        registerGestureRecognizer(new QWinNativePanGestureRecognizer);
-  #endif
-#else
     registerGestureRecognizer(new QTapAndHoldGestureRecognizer);
-#endif
 }
 
 QGestureManager::~QGestureManager()
diff --git a/src/widgets/kernel/qtooltip.cpp b/src/widgets/kernel/qtooltip.cpp
index d030a28356..97a279d65d 100644
--- a/src/widgets/kernel/qtooltip.cpp
+++ b/src/widgets/kernel/qtooltip.cpp
@@ -36,9 +36,6 @@
 ** $QT_END_LICENSE$
 **
 ****************************************************************************/
-#if 0 // Used to be included in Qt4 for Q_WS_MAC
-# include <private/qcore_mac_p.h>
-#endif
 
 #include <QtWidgets/private/qtwidgetsglobal_p.h>
 
@@ -63,11 +60,6 @@
 #include <QtWidgets/private/qlabel_p.h>
 #include <qtooltip.h>
 
-#if 0 // Used to be included in Qt4 for Q_WS_MAC
-# include <private/qcore_mac_p.h>
-#include <private/qt_cocoa_helpers_mac_p.h>
-#endif
-
 QT_BEGIN_NAMESPACE
 
 /*!
@@ -317,20 +309,7 @@ void QTipLabel::timerEvent(QTimerEvent *e)
         || e->timerId() == expireTimer.timerId()){
         hideTimer.stop();
         expireTimer.stop();
-#if 0 /* Used to be included in Qt4 for Q_WS_MAC */ && QT_CONFIG(effects)
-        if (QApplication::isEffectEnabled(Qt::UI_FadeTooltip)){
-            // Fade out tip on mac (makes it invisible).
-            // The tip will not be deleted until a new tip is shown.
-
-                        // DRSWAT - Cocoa
-                        macWindowFade(qt_mac_window_for(this));
-            QTipLabel::instance->fadingOut = true; // will never be false again.
-        }
-        else
-            hideTipImmediately();
-#else
         hideTipImmediately();
-#endif
     }
 }
 
@@ -420,29 +399,11 @@ void QTipLabel::placeTip(const QPoint &pos, QWidget *w)
 #endif //QT_NO_STYLE_STYLESHEET
 
 
-#if 0 // Used to be included in Qt4 for Q_WS_MAC
-    // When in full screen mode, there is no Dock nor Menu so we can use
-    // the whole screen for displaying the tooltip. However when not in
-    // full screen mode we need to save space for the dock, so we use
-    // availableGeometry instead.
-    extern bool qt_mac_app_fullscreen; //qapplication_mac.mm
-    QRect screen;
-    if(qt_mac_app_fullscreen)
-        screen = QDesktopWidgetPrivate::screenGeometry(getTipScreen(pos, w));
-    else
-        screen = QDesktopWidgetPrivate::availableGeometry(getTipScreen(pos, w));
-#else
     QRect screen = QDesktopWidgetPrivate::screenGeometry(getTipScreen(pos, w));
-#endif
 
     QPoint p = pos;
-    p += QPoint(2,
-#if 0 // Used to be included in Qt4 for Q_WS_WIN
-                21
-#else
-                16
-#endif
-        );
+    p += QPoint(2, 16);
+
     if (p.x() + this->width() > screen.x() + screen.width())
         p.rx() -= 4 + this->width();
     if (p.y() + this->height() > screen.y() + screen.height())
@@ -541,7 +502,7 @@ QT_WARNING_POP
         QTipLabel::instance->setObjectName(QLatin1String("qtooltip_label"));
 
 
-#if QT_CONFIG(effects) && !0 /* Used to be included in Qt4 for Q_WS_MAC */
+#if QT_CONFIG(effects)
         if (QApplication::isEffectEnabled(Qt::UI_FadeTooltip))
             qFadeEffect(QTipLabel::instance);
         else if (QApplication::isEffectEnabled(Qt::UI_AnimateTooltip))
diff --git a/src/widgets/kernel/qwhatsthis.cpp b/src/widgets/kernel/qwhatsthis.cpp
index a48eae6628..228ca4d38a 100644
--- a/src/widgets/kernel/qwhatsthis.cpp
+++ b/src/widgets/kernel/qwhatsthis.cpp
@@ -577,26 +577,12 @@ void QWhatsThisPrivate::say(QWidget * widget, const QString &text, int x, int y)
     if (text.size() == 0)
         return;
     // make a fresh widget, and set it up
-    QWhatsThat *whatsThat = new QWhatsThat(
-        text,
-#if 0 /* Used to be included in Qt4 for Q_WS_X11 */ && !defined(QT_NO_CURSOR)
-        QApplication::desktop()->screen(widget ? widget->x11Info().screen() : QCursor::x11Screen()),
-#else
-        0,
-#endif
-        widget
-       );
-
+    QWhatsThat *whatsThat = new QWhatsThat(text, 0, widget);
 
     // okay, now to find a suitable location
-
     int scr = (widget ?
                 QDesktopWidgetPrivate::screenNumber(widget) :
-#if 0 /* Used to be included in Qt4 for Q_WS_X11 */ && !defined(QT_NO_CURSOR)
-                QCursor::x11Screen()
-#else
                 QDesktopWidgetPrivate::screenNumber(QPoint(x,y))
-#endif
                );
     QRect screen = QDesktopWidgetPrivate::screenGeometry(scr);
 
diff --git a/src/widgets/kernel/qwidget.cpp b/src/widgets/kernel/qwidget.cpp
index 113c569591..0a7566614b 100644
--- a/src/widgets/kernel/qwidget.cpp
+++ b/src/widgets/kernel/qwidget.cpp
@@ -61,13 +61,6 @@
 #ifndef QT_NO_ACCESSIBILITY
 # include "qaccessible.h"
 #endif
-#if 0 // Used to be included in Qt4 for Q_WS_MAC
-# include "qt_mac_p.h"
-# include "qt_cocoa_helpers_mac_p.h"
-# include "qmainwindow.h"
-# include "qtoolbar.h"
-# include <private/qmainwindowlayout_p.h>
-#endif
 #include <qpa/qplatformwindow.h>
 #include "private/qwidgetwindow_p.h"
 #include "qpainter.h"
@@ -91,9 +84,6 @@
 #endif
 #include <qbackingstore.h>
 #include <private/qwidgetrepaintmanager_p.h>
-#if 0 // Used to be included in Qt4 for Q_WS_MAC
-# include <private/qpaintengine_mac_p.h>
-#endif
 #include <private/qpaintengine_raster_p.h>
 
 #include "qwidget_p.h"
@@ -129,20 +119,12 @@
 
 QT_BEGIN_NAMESPACE
 
-#if 0 // Used to be included in Qt4 for Q_WS_MAC
-bool qt_mac_clearDirtyOnWidgetInsideDrawWidget = false;
-#endif
-
 static inline bool qRectIntersects(const QRect &r1, const QRect &r2)
 {
     return (qMax(r1.left(), r2.left()) <= qMin(r1.right(), r2.right()) &&
             qMax(r1.top(), r2.top()) <= qMin(r1.bottom(), r2.bottom()));
 }
 
-#if 0 // Used to be included in Qt4 for Q_WS_MAC
-#  define QT_NO_PAINT_DEBUG
-#endif
-
 extern bool qt_sendSpontaneousEvent(QObject*, QEvent*); // qapplication.cpp
 extern QDesktopWidget *qt_desktopWidget; // qapplication.cpp
 
@@ -202,17 +184,6 @@ QWidgetPrivate::QWidgetPrivate(int version)
 #if defined(Q_OS_WIN)
       , noPaintOnScreen(0)
 #endif
-#if 0 // Used to be included in Qt4 for Q_WS_X11
-      , picture(0)
-#elif 0 // Used to be included in Qt4 for Q_WS_WIN
-  #ifndef QT_NO_GESTURES
-      , nativeGesturePanEnabled(0)
-  #endif
-#elif 0 // Used to be included in Qt4 for Q_WS_MAC
-      , needWindowChange(0)
-      , window_event(0)
-      , qd_hd(0)
-#endif
 {
     if (Q_UNLIKELY(!qApp)) {
         qFatal("QWidget: Must construct a QApplication before a QWidget");
@@ -231,16 +202,7 @@ QWidgetPrivate::QWidgetPrivate(int version)
 
     isWidget = true;
     memset(high_attributes, 0, sizeof(high_attributes));
-#if 0 // Used to be included in Qt4 for Q_WS_MAC
-    drawRectOriginalAdded = false;
-    originalDrawMethod = true;
-    changeMethods = false;
-    isInUnifiedToolbar = false;
-    unifiedSurface = 0;
-    toolbar_ancestor = 0;
-    flushRequested = false;
-    touchEventsEnabled = false;
-#endif
+
 #ifdef QWIDGET_EXTRA_DEBUG
     static int count = 0;
     qDebug() << "widgets" << ++count;
@@ -985,17 +947,12 @@ void QWidgetPrivate::adjustFlags(Qt::WindowFlags &flags, QWidget *w)
         // Only enable this on non-Mac platforms. Since the old way of doing this would
         // interpret WindowSystemMenuHint as a close button and we can't change that behavior
         // we can't just add this in.
-#if 1 // Used to be excluded in Qt4 for Q_WS_MAC
         if ((flags & (Qt::WindowMinMaxButtonsHint | Qt::WindowCloseButtonHint | Qt::WindowContextHelpButtonHint))
 #  ifdef Q_OS_WIN
             && type != Qt::Dialog // QTBUG-2027, allow for menu-less dialogs.
 #  endif
            ) {
             flags |= Qt::WindowSystemMenuHint;
-#else
-        if (flags & (Qt::WindowMinMaxButtonsHint | Qt::WindowCloseButtonHint
-                     | Qt::WindowSystemMenuHint)) {
-#endif
             flags |= Qt::WindowTitleHint;
             flags &= ~Qt::FramelessWindowHint;
         }
@@ -1050,13 +1007,6 @@ void QWidgetPrivate::init(QWidget *parentWidget, Qt::WindowFlags f)
     }
 #endif
 
-#if 0 // Used to be included in Qt4 for Q_WS_X11
-    if (desktopWidget) {
-        // make sure the widget is created on the same screen as the
-        // programmer specified desktop widget
-        xinfo = desktopWidget->d_func()->xinfo;
-    }
-#endif
     if (targetScreen >= 0) {
         topData()->initialScreenIndex = targetScreen;
         if (QWindow *window = q->windowHandle())
@@ -1084,9 +1034,6 @@ void QWidgetPrivate::init(QWidget *parentWidget, Qt::WindowFlags f)
         mustHaveWindowHandle = 1;
         q->setAttribute(Qt::WA_NativeWindow);
     }
-//#if 0 // Used to be included in Qt4 for Q_WS_MAC
-//    q->setAttribute(Qt::WA_NativeWindow);
-//#endif
 
     q->setAttribute(Qt::WA_QuitOnClose); // might be cleared in adjustQuitOnCloseAttribute()
     adjustQuitOnCloseAttribute();
@@ -1110,9 +1057,6 @@ void QWidgetPrivate::init(QWidget *parentWidget, Qt::WindowFlags f)
         setOpaque(q->isWindow() && background.style() != Qt::NoBrush && background.isOpaque());
     }
     data.fnt = QFont(data.fnt, q);
-#if 0 // Used to be included in Qt4 for Q_WS_X11
-    data.fnt.x11SetScreen(xinfo.screen());
-#endif
 
     q->setAttribute(Qt::WA_PendingMoveEvent);
     q->setAttribute(Qt::WA_PendingResizeEvent);
@@ -1128,20 +1072,8 @@ void QWidgetPrivate::init(QWidget *parentWidget, Qt::WindowFlags f)
     QCoreApplication::postEvent(q, new QEvent(QEvent::PolishRequest));
 
     extraPaintEngine = 0;
-
-#if 0 // Used to be included in Qt4 for Q_WS_MAC
-    // If we add a child to the unified toolbar, we have to redirect the painting.
-    if (parentWidget && parentWidget->d_func() && parentWidget->d_func()->isInUnifiedToolbar) {
-        if (parentWidget->d_func()->unifiedSurface) {
-            QWidget *toolbar = parentWidget->d_func()->toolbar_ancestor;
-            parentWidget->d_func()->unifiedSurface->recursiveRedirect(toolbar, toolbar, toolbar->d_func()->toolbar_offset);
-        }
-    }
-#endif
 }
 
-
-
 void QWidgetPrivate::createRecursively()
 {
     Q_Q(QWidget);
@@ -1248,15 +1180,6 @@ void QWidget::create(WId window, bool initializeWindow, bool destroyOldWindow)
              << "Alien?" << !testAttribute(Qt::WA_NativeWindow);
 #endif
 
-#if 0 /* Used to be included in Qt4 for Q_WS_WIN */ && QT_CONFIG(draganddrop)
-    // Unregister the dropsite (if already registered) before we
-    // re-create the widget with a native window.
-    if (testAttribute(Qt::WA_WState_Created) && !internalWinId() && testAttribute(Qt::WA_NativeWindow)
-            && d->extra && d->extra->dropTarget) {
-        d->registerDropSite(false);
-    }
-#endif
-
     d->updateIsOpaque();
 
     setAttribute(Qt::WA_WState_Created);                        // set created flag
@@ -1558,14 +1481,7 @@ QWidget::~QWidget()
                 // and if that also doesn't work, then give up
             }
         }
-    }
-
-#if 0 /* Used to be included in Qt4 for Q_WS_WIN */ || 0 /* Used to be included in Qt4 for Q_WS_X11 */|| 0 /* Used to be included in Qt4 for Q_WS_MAC */
-    else if (!internalWinId() && isVisible()) {
-        qApp->d_func()->sendSyntheticEnterLeave(this);
-    }
-#endif
-    else if (isVisible()) {
+    } else if (isVisible()) {
         qApp->d_func()->sendSyntheticEnterLeave(this);
     }
 
@@ -1609,15 +1525,6 @@ QWidget::~QWidget()
 
     d->blockSig = blocked;
 
-#if 0 // Used to be included in Qt4 for Q_WS_MAC
-    // QCocoaView holds a pointer back to this widget. Clear it now
-    // to make sure it's not followed later on. The lifetime of the
-    // QCocoaView might exceed the lifetime of this widget in cases
-    // where Cocoa itself holds references to it.
-    extern void qt_mac_clearCocoaViewQWidgetPointers(QWidget *);
-    qt_mac_clearCocoaViewQWidgetPointers(this);
-#endif
-
     if (!d->children.isEmpty())
         d->deleteChildren();
 
@@ -1664,9 +1571,6 @@ void QWidgetPrivate::setWinId(WId id)                // set widget identifier
     const WId oldWinId = data.winid;
 
     data.winid = id;
-#if 0 // Used to be included in Qt4 for Q_WS_X11
-    hd = id; // X11: hd == ident
-#endif
     if (mapper && id && !userDesktopWidget) {
         mapper->insert(data.winid, q);
     }
@@ -1698,9 +1602,7 @@ void QWidgetPrivate::createTLExtra()
         x->embedded = 0;
         x->window = 0;
         x->initialScreenIndex = -1;
-#if 0 // Used to be included in Qt4 for Q_WS_MAC
-        x->wasMaximized = false;
-#endif
+
 #ifdef QWIDGET_EXTRA_DEBUG
         static int count = 0;
         qDebug() << "tlextra" << ++count;
@@ -2097,11 +1999,6 @@ void QWidgetPrivate::subtractOpaqueSiblings(QRegion &sourceRegion, bool *hasDirt
     if (disableSubtractOpaqueSiblings || q->isWindow())
         return;
 
-#if 0 // Used to be included in Qt4 for Q_WS_MAC
-    if (q->d_func()->isInUnifiedToolbar)
-        return;
-#endif
-
     QRect clipBoundingRect;
     bool dirtyClipBoundingRect = true;
 
@@ -2234,13 +2131,6 @@ void QWidgetPrivate::updateIsOpaque()
 #endif // QT_CONFIG(graphicseffect)
 
     Q_Q(QWidget);
-#if 0 // Used to be included in Qt4 for Q_WS_X11
-    if (q->testAttribute(Qt::WA_X11OpenGLOverlay)) {
-        setOpaque(false);
-        return;
-    }
-#endif
-
     if (q->testAttribute(Qt::WA_OpaquePaintEvent) || q->testAttribute(Qt::WA_PaintOnScreen)) {
         setOpaque(true);
         return;
@@ -2293,20 +2183,9 @@ static inline void fillRegion(QPainter *painter, const QRegion &rgn, const QBrus
     Q_ASSERT(painter);
 
     if (brush.style() == Qt::TexturePattern) {
-#if 0 // Used to be included in Qt4 for Q_WS_MAC
-        // Optimize pattern filling on mac by using HITheme directly
-        // when filling with the standard widget background.
-        // Defined in qmacstyle_mac.cpp
-        extern void qt_mac_fill_background(QPainter *painter, const QRegion &rgn, const QBrush &brush);
-        qt_mac_fill_background(painter, rgn, brush);
-#else
-        {
-            const QRect rect(rgn.boundingRect());
-            painter->setClipRegion(rgn);
-            painter->drawTiledPixmap(rect, brush.texture(), rect.topLeft());
-        }
-#endif
-
+        const QRect rect(rgn.boundingRect());
+        painter->setClipRegion(rgn);
+        painter->drawTiledPixmap(rect, brush.texture(), rect.topLeft());
     } else if (brush.gradient()
                && (brush.gradient()->coordinateMode() == QGradient::ObjectBoundingMode
                    || brush.gradient()->coordinateMode() == QGradient::ObjectMode)) {
@@ -2380,11 +2259,7 @@ void QWidgetPrivate::paintBackground(QPainter *painter, const QRegion &rgn, Draw
   visible widgets.
 */
 
-#if 0 // Used to be included in Qt4 for Q_WS_MAC
-    extern QPointer<QWidget> qt_button_down;
-#else
-    extern QWidget *qt_button_down;
-#endif
+extern QWidget *qt_button_down;
 
 void QWidgetPrivate::deactivateWidgetCleanup()
 {
@@ -3053,15 +2928,6 @@ bool QWidget::isFullScreen() const
 */
 void QWidget::showFullScreen()
 {
-#if 0 // Used to be included in Qt4 for Q_WS_MAC
-    // If the unified toolbar is enabled, we have to disable it before going fullscreen.
-    QMainWindow *mainWindow = qobject_cast<QMainWindow*>(this);
-    if (mainWindow && mainWindow->unifiedTitleAndToolBarOnMac()) {
-        mainWindow->setUnifiedTitleAndToolBarOnMac(false);
-        QMainWindowLayout *mainLayout = qobject_cast<QMainWindowLayout*>(mainWindow->layout());
-        mainLayout->activateUnifiedToolbarAfterFullScreen = true;
-    }
-#endif
     ensurePolished();
 
     setWindowState((windowState() & ~(Qt::WindowMinimized | Qt::WindowMaximized))
@@ -3089,18 +2955,6 @@ void QWidget::showMaximized()
 
     setWindowState((windowState() & ~(Qt::WindowMinimized | Qt::WindowFullScreen))
                    | Qt::WindowMaximized);
-#if 0 // Used to be included in Qt4 for Q_WS_MAC
-    // If the unified toolbar was enabled before going fullscreen, we have to enable it back.
-    QMainWindow *mainWindow = qobject_cast<QMainWindow*>(this);
-    if (mainWindow)
-    {
-        QMainWindowLayout *mainLayout = qobject_cast<QMainWindowLayout*>(mainWindow->layout());
-        if (mainLayout->activateUnifiedToolbarAfterFullScreen) {
-            mainWindow->setUnifiedTitleAndToolBarOnMac(true);
-            mainLayout->activateUnifiedToolbarAfterFullScreen = false;
-        }
-    }
-#endif
     setVisible(true);
 }
 
@@ -3118,18 +2972,6 @@ void QWidget::showNormal()
     setWindowState(windowState() & ~(Qt::WindowMinimized
                                      | Qt::WindowMaximized
                                      | Qt::WindowFullScreen));
-#if 0 // Used to be included in Qt4 for Q_WS_MAC
-    // If the unified toolbar was enabled before going fullscreen, we have to enable it back.
-    QMainWindow *mainWindow = qobject_cast<QMainWindow*>(this);
-    if (mainWindow)
-    {
-        QMainWindowLayout *mainLayout = qobject_cast<QMainWindowLayout*>(mainWindow->layout());
-        if (mainLayout->activateUnifiedToolbarAfterFullScreen) {
-            mainWindow->setUnifiedTitleAndToolBarOnMac(true);
-            mainLayout->activateUnifiedToolbarAfterFullScreen = false;
-        }
-    }
-#endif
     setVisible(true);
 }
 
@@ -3345,13 +3187,6 @@ void QWidgetPrivate::setEnabled_helper(bool enable)
         if (w && !w->testAttribute(attribute))
             w->d_func()->setEnabled_helper(enable);
     }
-#if 0 // Used to be included in Qt4 for Q_WS_X11
-    if (q->testAttribute(Qt::WA_SetCursor) || q->isWindow()) {
-        // enforce the windows behavior of clearing the cursor on
-        // disabled widgets
-        qt_x11_enforce_cursor(q);
-    }
-#endif
 #ifndef QT_NO_CURSOR
     if (q->testAttribute(Qt::WA_SetCursor) || q->isWindow()) {
         // enforce the windows behavior of clearing the cursor on
@@ -3359,9 +3194,6 @@ void QWidgetPrivate::setEnabled_helper(bool enable)
         qt_qpa_set_cursor(q, false);
     }
 #endif
-#if 0 // Used to be included in Qt4 for Q_WS_MAC
-    setEnabled_helper_sys(enable);
-#endif
 #ifndef QT_NO_IM
     if (q->testAttribute(Qt::WA_InputMethodEnabled) && q->hasFocus()) {
         QWidget *focusWidget = effectiveFocusWidget();
@@ -4456,13 +4288,7 @@ const QPalette &QWidget::palette() const
         ) {
         data->pal.setCurrentColorGroup(QPalette::Active);
     } else {
-#if 0 // Used to be included in Qt4 for Q_WS_MAC
-        extern bool qt_mac_can_clickThrough(const QWidget *); //qwidget_mac.cpp
-        if (qt_mac_can_clickThrough(this))
-            data->pal.setCurrentColorGroup(QPalette::Active);
-        else
-#endif
-            data->pal.setCurrentColorGroup(QPalette::Inactive);
+        data->pal.setCurrentColorGroup(QPalette::Inactive);
     }
     return data->pal;
 }
@@ -4725,10 +4551,7 @@ void QWidgetPrivate::updateFont(const QFont &font)
 #endif
 
     data.fnt = QFont(font, q);
-#if 0 // Used to be included in Qt4 for Q_WS_X11
-    // make sure the font set on this widget is associated with the correct screen
-    data.fnt.x11SetScreen(xinfo.screen());
-#endif
+
     // Combine new mask with natural mask and propagate to children.
 #if QT_CONFIG(graphicsview)
     if (!q->parentWidget() && extra && extra->proxyWidget) {
@@ -4902,11 +4725,8 @@ QCursor QWidget::cursor() const
 void QWidget::setCursor(const QCursor &cursor)
 {
     Q_D(QWidget);
-// On Mac we must set the cursor even if it is the ArrowCursor.
-#if 1 // Used to be excluded in Qt4 for Q_WS_MAC
     if (cursor.shape() != Qt::ArrowCursor
         || (d->extra && d->extra->curs))
-#endif
     {
         d->createExtra();
         d->extra->curs = qt_make_unique<QCursor>(cursor);
@@ -5333,11 +5153,9 @@ void QWidgetPrivate::render_helper(QPainter *painter, const QPoint &targetOffset
     Q_ASSERT(!toBePainted.isEmpty());
 
     Q_Q(QWidget);
-#if 1 // Used to be excluded in Qt4 for Q_WS_MAC
     const QTransform originalTransform = painter->worldTransform();
     const bool useDeviceCoordinates = originalTransform.isScaling();
     if (!useDeviceCoordinates) {
-#endif
         // Render via a pixmap.
         const QRect rect = toBePainted.boundingRect();
         const QSize size = rect.size();
@@ -5360,7 +5178,6 @@ void QWidgetPrivate::render_helper(QPainter *painter, const QPoint &targetOffset
         if (restore)
             painter->setRenderHints(QPainter::SmoothPixmapTransform, false);
 
-#if 1 // Used to be excluded in Qt4 for Q_WS_MAC
     } else {
         // Render via a pixmap in device coordinates (to avoid pixmap scaling).
         QTransform transform = originalTransform;
@@ -5391,7 +5208,6 @@ void QWidgetPrivate::render_helper(QPainter *painter, const QPoint &targetOffset
         painter->drawPixmap(deviceRect.topLeft(), pixmap);
         painter->setTransform(originalTransform);
     }
-#endif
 }
 
 void QWidgetPrivate::drawWidget(QPaintDevice *pdev, const QRegion &rgn, const QPoint &offset, DrawWidgetFlags flags,
@@ -5471,15 +5287,6 @@ void QWidgetPrivate::drawWidget(QPaintDevice *pdev, const QRegion &rgn, const QP
             if (paintEngine) {
                 setRedirected(pdev, -offset);
 
-#if 0 // Used to be included in Qt4 for Q_WS_MAC
-                // (Alien support) Special case for Mac when redirecting: If the paint device
-                // is of the Widget type we need to set WA_WState_InPaintEvent since painting
-                // outside the paint event is not supported on QWidgets. The attributeis
-                // restored further down.
-                if (pdev->devType() == QInternal::Widget)
-                    static_cast<QWidget *>(pdev)->setAttribute(Qt::WA_WState_InPaintEvent);
-
-#endif
                 if (sharedPainter)
                     setSystemClip(pdev->paintEngine(), pdev->devicePixelRatioF(), toBePainted);
                 else
@@ -5561,10 +5368,6 @@ void QWidgetPrivate::drawWidget(QPaintDevice *pdev, const QRegion &rgn, const QP
 
             //restore
             if (paintEngine) {
-#if 0 // Used to be included in Qt4 for Q_WS_MAC
-                if (pdev->devType() == QInternal::Widget)
-                    static_cast<QWidget *>(pdev)->setAttribute(Qt::WA_WState_InPaintEvent, false);
-#endif
                 restoreRedirected();
                 if (!sharedPainter)
                     paintEngine->d_func()->systemRect = QRect();
@@ -5635,7 +5438,6 @@ void QWidgetPrivate::render(QPaintDevice *target, const QPoint &targetOffset,
     if (paintRegion.isEmpty())
         return;
 
-#if 1 // Used to be excluded in Qt4 for Q_WS_MAC
     QPainter *oldSharedPainter = inRenderWithPainter ? sharedPainter() : 0;
 
     // Use the target's shared painter if set (typically set when doing
@@ -5648,7 +5450,6 @@ void QWidgetPrivate::render(QPaintDevice *target, const QPoint &targetOffset,
                 setSharedPainter(targetPainter);
         }
     }
-#endif
 
     // Use the target's redirected device if set and adjust offset and paint
     // region accordingly. This is typically the case when people call render
@@ -6440,11 +6241,7 @@ void QWidget::setFocus(Qt::FocusReason reason)
     if (!f)
         f = this;
 
-    if (QApplication::focusWidget() == f
-#if 0 // Used to be included in Qt4 for Q_WS_WIN
-        && GetFocus() == f->internalWinId()
-#endif
-       )
+    if (QApplication::focusWidget() == f)
         return;
 
 #if QT_CONFIG(graphicsview)
@@ -6661,17 +6458,10 @@ void QWidget::clearFocus()
     if (hasFocus()) {
         // Update proxy state
         QApplicationPrivate::setFocusWidget(0, Qt::OtherFocusReason);
-#if 0 // Used to be included in Qt4 for Q_WS_WIN
-        if (!(windowType() == Qt::Popup) && GetFocus() == internalWinId())
-            SetFocus(0);
-        else
-#endif
-        {
 #ifndef QT_NO_ACCESSIBILITY
-            QAccessibleEvent event(this, QAccessible::Focus);
-            QAccessible::updateAccessibility(&event);
+        QAccessibleEvent event(this, QAccessible::Focus);
+        QAccessible::updateAccessibility(&event);
 #endif
-        }
     }
 }
 
@@ -7315,18 +7105,6 @@ void QWidgetPrivate::setGeometry_sys(int x, int y, int w, int h, bool isMove)
 */
 QByteArray QWidget::saveGeometry() const
 {
-#if 0 // Used to be included in Qt4 for Q_WS_MAC
-    // We check if the window was maximized during this invocation. If so, we need to record the
-    // starting position as 0,0.
-    Q_D(const QWidget);
-    QRect newFramePosition = frameGeometry();
-    QRect newNormalPosition = normalGeometry();
-    if(d->topData()->wasMaximized && !(windowState() & Qt::WindowMaximized)) {
-        // Change the starting position
-        newFramePosition.moveTo(0, 0);
-        newNormalPosition.moveTo(0, 0);
-    }
-#endif
     QByteArray array;
     QDataStream stream(&array, QIODevice::WriteOnly);
     stream.setVersion(QDataStream::Qt_4_0);
@@ -7341,13 +7119,8 @@ QByteArray QWidget::saveGeometry() const
     stream << magicNumber
            << majorVersion
            << minorVersion
-#if 0 // Used to be included in Qt4 for Q_WS_MAC
-           << newFramePosition
-           << newNormalPosition
-#else
            << frameGeometry()
            << normalGeometry()
-#endif
            << qint32(screenNumber)
            << quint8(windowState() & Qt::WindowMaximized)
            << quint8(windowState() & Qt::WindowFullScreen)
@@ -7467,11 +7240,6 @@ bool QWidget::restoreGeometry(const QByteArray &geometry)
     // that would make the window "lost". This happens if:
     // - The restored geometry is completely oustside the available geometry
     // - The title bar is outside the available geometry.
-    // - (Mac only) The window is higher than the available geometry. It must
-    //   be possible to bring the size grip on screen by moving the window.
-#if 0 // Used to be included in Qt4 for Q_WS_MAC
-    restoredNormalGeometry.setHeight(qMin(restoredNormalGeometry.height(), availableGeometry.height() - frameHeight));
-#endif
 
     checkRestoredGeometry(availableGeometry, &restoredGeometry, frameHeight);
     checkRestoredGeometry(availableGeometry, &restoredNormalGeometry, frameHeight);
@@ -7991,14 +7759,6 @@ void QWidgetPrivate::show_helper()
     Q_UNUSED(isEmbedded);
 #endif
 
-    // On Windows, show the popup now so that our own focus handling
-    // stores the correct old focus widget even if it's stolen in the
-    // showevent
-#if 0 /* Used to be included in Qt4 for Q_WS_WIN */ || 0 /* Used to be included in Qt4 for Q_WS_MAC */
-    if (!isEmbedded && q->windowType() == Qt::Popup)
-        qApp->d_func()->openPopup(q);
-#endif
-
     // send the show event before showing the window
     QShowEvent showEvent;
     QCoreApplication::sendEvent(q, &showEvent);
@@ -8123,12 +7883,6 @@ void QWidgetPrivate::hide_helper()
     if (!isEmbedded && (q->windowType() == Qt::Popup))
         qApp->d_func()->closePopup(q);
 
-#if 0 // Used to be included in Qt4 for Q_WS_WIN
-    if (q->isWindow() && !(q->windowType() == Qt::Popup) && q->parentWidget()
-        && !q->parentWidget()->isHidden() && q->isActiveWindow())
-        q->parentWidget()->activateWindow();        // Activate parent
-#endif
-
     q->setAttribute(Qt::WA_Mapped, false);
     hide_sys();
 
@@ -8313,16 +8067,6 @@ void QWidgetPrivate::setVisible(bool visible)
         QEvent showToParentEvent(QEvent::ShowToParent);
         QCoreApplication::sendEvent(q, &showToParentEvent);
     } else { // hide
-#if 0 // Used to be included in Qt4 for Q_WS_WIN
-        // reset WS_DISABLED style in a Blocked window
-        if(isWindow() && testAttribute(Qt::WA_WState_Created)
-           && QApplicationPrivate::isBlockedByModal(this))
-        {
-            LONG dwStyle = GetWindowLong(winId(), GWL_STYLE);
-            dwStyle &= ~WS_DISABLED;
-            SetWindowLong(winId(), GWL_STYLE, dwStyle);
-        }
-#endif
         if (QApplicationPrivate::hidden_focus_widget == q)
             QApplicationPrivate::hidden_focus_widget = 0;
 
@@ -8395,23 +8139,7 @@ void QWidgetPrivate::hideChildren(bool spontaneous)
         QWidget *widget = qobject_cast<QWidget*>(childList.at(i));
         if (!widget || widget->isWindow() || widget->testAttribute(Qt::WA_WState_Hidden))
             continue;
-#if 0 // Used to be included in Qt4 for Q_WS_MAC
-        // Before doing anything we need to make sure that we don't leave anything in a non-consistent state.
-        // When hiding a widget we need to make sure that no mouse_down events are active, because
-        // the mouse_up event will never be received by a hidden widget or one of its descendants.
-        // The solution is simple, before going through with this we check if there are any mouse_down events in
-        // progress, if so we check if it is related to this widget or not. If so, we just reset the mouse_down and
-        // then we continue.
-        // In X11 and Windows we send a mouse_release event, however we don't do that here because we were already
-        // ignoring that from before. I.e. Carbon did not send the mouse release event, so we will not send the
-        // mouse release event. There are two ways to interpret this:
-        // 1. If we don't send the mouse release event, the widget might get into an inconsistent state, i.e. it
-        // might be waiting for a release event that will never arrive.
-        // 2. If we send the mouse release event, then the widget might decide to trigger an action that is not
-        // supposed to trigger because it is not visible.
-        if(widget == qt_button_down)
-            qt_button_down = 0;
-#endif
+
         if (spontaneous)
             widget->setAttribute(Qt::WA_Mapped, false);
         else
@@ -8646,11 +8374,9 @@ QSize QWidgetPrivate::adjustedSize() const
             s.setWidth(qMax(s.width(), 200));
         if (exp & Qt::Vertical)
             s.setHeight(qMax(s.height(), 100));
-#if 0 // Used to be included in Qt4 for Q_WS_X11
-        QRect screen = QDesktopWidgetPrivate::screenGeometry(q->x11Info().screen());
-#else // all others
+
         QRect screen = QDesktopWidgetPrivate::screenGeometry(q->pos());
-#endif
+
         s.setWidth(qMin(s.width(), screen.width()*2/3));
         s.setHeight(qMin(s.height(), screen.height()*2/3));
 
@@ -8775,26 +8501,6 @@ bool QWidget::isAncestorOf(const QWidget *child) const
     return false;
 }
 
-#if 0 // Used to be included in Qt4 for Q_WS_WIN
-inline void setDisabledStyle(QWidget *w, bool setStyle)
-{
-    // set/reset WS_DISABLED style.
-    if(w && w->isWindow() && w->isVisible() && w->isEnabled()) {
-        LONG dwStyle = GetWindowLong(w->winId(), GWL_STYLE);
-        LONG newStyle = dwStyle;
-        if (setStyle)
-            newStyle |= WS_DISABLED;
-        else
-            newStyle &= ~WS_DISABLED;
-        if (newStyle != dwStyle) {
-            SetWindowLong(w->winId(), GWL_STYLE, newStyle);
-            // we might need to repaint in some situations (eg. menu)
-            w->repaint();
-        }
-    }
-}
-#endif
-
 /*****************************************************************************
   QWidget event handling
  *****************************************************************************/
@@ -9211,9 +8917,6 @@ bool QWidget::event(QEvent *event)
                 }
             }
         }
-#if 0 // Used to be included in Qt4 for Q_WS_WIN
-            setDisabledStyle(this, (event->type() == QEvent::WindowBlocked));
-#endif
         break;
 #ifndef QT_NO_TOOLTIP
     case QEvent::ToolTip:
@@ -9238,9 +8941,6 @@ bool QWidget::event(QEvent *event)
     case QEvent::EmbeddingControl:
         d->topData()->frameStrut.setCoords(0 ,0, 0, 0);
         data->fstrut_dirty = false;
-#if 0 /* Used to be included in Qt4 for Q_WS_WIN */ || 0 /* Used to be included in Qt4 for Q_WS_X11 */
-        d->topData()->embedded = 1;
-#endif
         break;
 #ifndef QT_NO_ACTION
     case QEvent::ActionAdded:
@@ -9263,11 +8963,6 @@ bool QWidget::event(QEvent *event)
             }
             break;
         }
-#if 0 // Used to be included in Qt4 for Q_WS_MAC
-    case QEvent::MacGLWindowChange:
-        d->needWindowChange = false;
-        break;
-#endif
     case QEvent::TouchBegin:
     case QEvent::TouchUpdate:
     case QEvent::TouchEnd:
@@ -9379,11 +9074,6 @@ void QWidget::changeEvent(QEvent * event)
     case QEvent::MacSizeChange:
         updateGeometry();
         break;
-#elif 0 // Used to be included in Qt4 for Q_WS_MAC
-    case QEvent::ToolTipChange:
-    case QEvent::MouseTrackingChange:
-        qt_mac_update_mouseTracking(this);
-        break;
 #endif
 
     default:
@@ -10695,7 +10385,7 @@ void QWidget::setParent(QWidget *parent, Qt::WindowFlags f)
     // (f & Qt::MSWindowsOwnDC) clause (which is set on QGLWidgets on all
     // platforms).
     if (newParent
-#if 0 /* Used to be included in Qt4 for Q_WS_WIN */ || defined(QT_OPENGL_ES)
+#if defined(QT_OPENGL_ES)
         || (f & Qt::MSWindowsOwnDC)
 #endif
         ) {
@@ -10714,15 +10404,6 @@ void QWidget::setParent(QWidget *parent, Qt::WindowFlags f)
             QCoreApplication::sendEvent(parent, &e);
         }
 
-//### already hidden above ---> must probably do something smart on the mac
-// #if 0 // Used to be included in Qt4 for Q_WS_MAC
-//             extern bool qt_mac_is_macdrawer(const QWidget *); //qwidget_mac.cpp
-//             if(!qt_mac_is_macdrawer(q)) //special case
-//                 q->setAttribute(Qt::WA_WState_Hidden);
-// #else
-//             q->setAttribute(Qt::WA_WState_Hidden);
-//#endif
-
         if (parent && d->sendChildEvents && d->polished) {
             QChildEvent e(QEvent::ChildPolished, this);
             QCoreApplication::sendEvent(parent, &e);
@@ -11204,23 +10885,6 @@ void QWidget::setAttribute(Qt::WidgetAttribute attribute, bool on)
     case Qt::WA_NoChildEventsFromChildren:
         d->receiveChildEvents = !on;
         break;
-#if 0 // Used to be included in Qt4 for Q_WS_MAC
-    case Qt::WA_MacOpaqueSizeGrip:
-        d->macUpdateOpaqueSizeGrip();
-        break;
-    case Qt::WA_MacShowFocusRect:
-        if (hasFocus()) {
-            clearFocus();
-            setFocus();
-        }
-        break;
-    case Qt::WA_Hover:
-        qt_mac_update_mouseTracking(this);
-        break;
-    case Qt::WA_MacAlwaysShowToolWindow:
-        d->macUpdateHideOnSuspend();
-        break;
-#endif
     case Qt::WA_MacNormalSize:
     case Qt::WA_MacSmallSize:
     case Qt::WA_MacMiniSize:
@@ -11298,15 +10962,6 @@ void QWidget::setAttribute(Qt::WidgetAttribute attribute, bool on)
     }
     case Qt::WA_PaintOnScreen:
         d->updateIsOpaque();
-#if 0 /* Used to be included in Qt4 for Q_WS_WIN */ || 0 /* Used to be included in Qt4 for Q_WS_X11 */ || 0 /* Used to be included in Qt4 for Q_WS_MAC */
-        // Recreate the widget if it's already created as an alien widget and
-        // WA_PaintOnScreen is enabled. Paint on screen widgets must have win id.
-        // So must their children.
-        if (on) {
-            setAttribute(Qt::WA_NativeWindow);
-            d->enforceNativeChildren();
-        }
-#endif
         Q_FALLTHROUGH();
     case Qt::WA_OpaquePaintEvent:
         d->updateIsOpaque();
@@ -11318,9 +10973,6 @@ void QWidget::setAttribute(Qt::WidgetAttribute attribute, bool on)
         d->updateSystemBackground();
         break;
     case Qt::WA_TransparentForMouseEvents:
-#if 0 // Used to be included in Qt4 for Q_WS_MAC
-        d->macUpdateIgnoreMouseEvents();
-#endif
         break;
     case Qt::WA_InputMethodEnabled: {
 #ifndef QT_NO_IM
@@ -11337,20 +10989,6 @@ void QWidget::setAttribute(Qt::WidgetAttribute attribute, bool on)
         d->resolveFont();
         d->resolveLocale();
         break;
-#if 0 // Used to be included in Qt4 for Q_WS_X11
-    case Qt::WA_NoX11EventCompression:
-        if (!d->extra)
-            d->createExtra();
-        d->extra->compress_events = on;
-        break;
-    case Qt::WA_X11OpenGLOverlay:
-        d->updateIsOpaque();
-        break;
-    case Qt::WA_X11DoNotAcceptFocus:
-        if (testAttribute(Qt::WA_WState_Created))
-            d->updateX11AcceptFocus();
-        break;
-#endif
     case Qt::WA_DontShowOnScreen: {
         if (on && isVisible()) {
             // Make sure we keep the current state and only hide the widget
@@ -11393,10 +11031,6 @@ void QWidget::setAttribute(Qt::WidgetAttribute attribute, bool on)
 
         break;
     case Qt::WA_AcceptTouchEvents:
-#if 0 /* Used to be included in Qt4 for Q_WS_WIN */ || 0 /* Used to be included in Qt4 for Q_WS_MAC */
-        if (on)
-            d->registerTouchWindow();
-#endif
         break;
     default:
         break;
@@ -12012,10 +11646,8 @@ QRect QWidgetPrivate::frameStrut() const
     }
 
     if (data.fstrut_dirty
-#if 1 // Used to be excluded in Qt4 for Q_WS_WIN
         // ### Fix properly for 4.3
         && q->isVisible()
-#endif
         && q->testAttribute(Qt::WA_WState_Created))
         const_cast<QWidgetPrivate *>(this)->updateFrameStrut();
 
@@ -12942,10 +12574,8 @@ void QWidget::setMask(const QRegion &newMask)
     d->extra->mask = newMask;
     d->extra->hasMask = !newMask.isEmpty();
 
-#if 1 // Used to be excluded in Qt4 for Q_WS_MAC
     if (!testAttribute(Qt::WA_WState_Created))
         return;
-#endif
 
     d->setMask_sys(newMask);
 
diff --git a/src/widgets/kernel/qwidget_p.h b/src/widgets/kernel/qwidget_p.h
index 941f92c062..6fd9c2d273 100644
--- a/src/widgets/kernel/qwidget_p.h
+++ b/src/widgets/kernel/qwidget_p.h
@@ -155,41 +155,6 @@ struct QTLWExtra {
     uint sizeAdjusted : 1;
     uint inTopLevelResize : 1;
     uint embedded : 1;
-
-    // *************************** Platform specific values (bit fields first) **********
-#if 0 /* Used to be included in Qt4 for Q_WS_X11 */ // <----------------------------------------------------------- X11
-    uint spont_unmapped: 1; // window was spontaneously unmapped
-    uint dnd : 1; // DND properties installed
-    uint validWMState : 1; // is WM_STATE valid?
-    uint waitingForMapNotify : 1; // show() has been called, haven't got the MapNotify yet
-    WId parentWinId; // parent window Id (valid after reparenting)
-    WId userTimeWindow; // window id that contains user-time timestamp when WM supports a _NET_WM_USER_TIME_WINDOW atom
-    QPoint fullScreenOffset;
-#ifndef QT_NO_XSYNC
-    WId syncUpdateCounter;
-    ulong syncRequestTimestamp;
-    qint32 newCounterValueHi;
-    quint32 newCounterValueLo;
-#endif
-#elif 0 /* Used to be included in Qt4 for Q_WS_WIN */ // <--------------------------------------------------------- WIN
-    uint hotkeyRegistered: 1; // Hot key from the STARTUPINFO has been registered.
-    HICON winIconBig; // internal big Windows icon
-    HICON winIconSmall; // internal small Windows icon
-#elif 0 /* Used to be included in Qt4 for Q_WS_MAC */ // <--------------------------------------------------------- MAC
-    uint resizer : 4;
-    uint isSetGeometry : 1;
-    uint isMove : 1;
-    quint32 wattr;
-    quint32 wclass;
-    WindowGroupRef group;
-    IconRef windowIcon; // the current window icon, if set with setWindowIcon_sys.
-    quint32 savedWindowAttributesFromMaximized; // Saved attributes from when the calling updateMaximizeButton_sys()
-    // This value is just to make sure we maximize and restore to the right location, yet we allow apps to be maximized and
-    // manually resized.
-    // The name is misleading, since this is set when maximizing the window. It is a hint to saveGeometry(..) to record the
-    // starting position as 0,0 instead of the normal starting position.
-    bool wasMaximized;
-#endif
 };
 
 struct QWExtra {
@@ -228,21 +193,6 @@ struct QWExtra {
     uint inRenderWithPainter : 1;
     uint hasMask : 1;
     uint hasWindowContainer : 1;
-
-    // *************************** Platform specific values (bit fields first) **********
-#if 0 /* Used to be included in Qt4 for Q_WS_WIN */ // <----------------------------------------------------------- WIN
-#if QT_CONFIG(draganddrop)
-    QOleDropTarget *dropTarget; // drop target
-    QList<QPointer<QWidget> > oleDropWidgets;
-#endif
-#elif 0 /* Used to be included in Qt4 for Q_WS_X11 */ // <--------------------------------------------------------- X11
-    uint compress_events : 1;
-    WId xDndProxy; // XDND forwarding to embedded windows
-#elif 0 /* Used to be included in Qt4 for Q_WS_MAC */ // <------------------------------------------------------ MAC
-    // Cocoa Mask stuff
-    QImage maskBits;
-    CGImageRef imageMask;
-#endif
 };
 
 /*!
@@ -770,109 +720,8 @@ public:
     // *************************** Platform specific ************************************
 #if defined(Q_OS_WIN)
     uint noPaintOnScreen : 1; // see qwidget.cpp ::paintEngine()
-#endif
-#if 0 /* Used to be included in Qt4 for Q_WS_X11 */ // <----------------------------------------------------------- X11
-    Qt::HANDLE picture;
-    static QWidget *mouseGrabber;
-    static QWidget *keyboardGrabber;
-
-    void setWindowRole();
-    void sendStartupMessage(const char *message) const;
-    void x11UpdateIsOpaque();
-    bool isBackgroundInherited() const;
-    void updateX11AcceptFocus();
-    QPoint mapToGlobal(const QPoint &pos) const;
-    QPoint mapFromGlobal(const QPoint &pos) const;
-#elif 0 /* Used to be included in Qt4 for Q_WS_WIN */ // <--------------------------------------------------------- WIN
-#ifndef QT_NO_GESTURES
-    uint nativeGesturePanEnabled : 1;
-#endif
-    bool shouldShowMaximizeButton();
-    void winUpdateIsOpaque();
-    void reparentChildren();
-#if QT_CONFIG(draganddrop)
-    QOleDropTarget *registerOleDnd(QWidget *widget);
-    void unregisterOleDnd(QWidget *widget, QOleDropTarget *target);
-#endif
-    void grabMouseWhileInWindow();
-    void registerTouchWindow();
-    void winSetupGestures();
-#elif defined(Q_OS_MAC) // <--------------------------------------------------------- MAC
+#elif defined(Q_OS_MAC)
     void macUpdateSizeAttribute();
-#elif 0 /* Used to be included in Qt4 for Q_WS_MAC */ // <--------------------------------------------------------- MAC (old stuff)
-    // This is new stuff
-    uint needWindowChange : 1;
-
-    // Each wiget keeps a list of all its child and grandchild OpenGL widgets.
-    // This list is used to update the gl context whenever a parent and a granparent
-    // moves, and also to check for intersections with gl widgets within the window
-    // when a widget moves.
-    struct GlWidgetInfo
-    {
-        GlWidgetInfo(QWidget *widget) : widget(widget), lastUpdateWidget(0) { }
-        bool operator==(const GlWidgetInfo &other) const { return (widget == other.widget); }
-        QWidget * widget;
-        QWidget * lastUpdateWidget;
-    };
-
-    // dirtyOnWidget contains the areas in the widget that needs to be repained,
-    // in the same way as dirtyOnScreen does for the window. Areas are added in
-    // dirtyWidget_sys and cleared in the paint event. In scroll_sys we then use
-    // this information repaint invalid areas when widgets are scrolled.
-    QRegion dirtyOnWidget;
-    EventHandlerRef window_event;
-    QList<GlWidgetInfo> glWidgets;
-
-    //these are here just for code compat (HIViews)
-    Qt::HANDLE qd_hd;
-
-    void macUpdateHideOnSuspend();
-    void macUpdateOpaqueSizeGrip();
-    void macUpdateIgnoreMouseEvents();
-    void macUpdateMetalAttribute();
-    void macUpdateIsOpaque();
-    void macSetNeedsDisplay(QRegion region);
-    void setEnabled_helper_sys(bool enable);
-    bool isRealWindow() const;
-    void adjustWithinMaxAndMinSize(int &w, int &h);
-    void applyMaxAndMinSizeOnWindow();
-    void update_sys(const QRect &rect);
-    void update_sys(const QRegion &rgn);
-    void setGeometry_sys_helper(int, int, int, int, bool);
-    void updateMaximizeButton_sys();
-    void createWindow_sys();
-    void recreateMacWindow();
-    void setSubWindowStacking(bool set);
-    void setWindowLevel();
-    void finishCreateWindow_sys_Cocoa(void * /*NSWindow * */ windowRef);
-    void syncCocoaMask();
-    void finishCocoaMaskSetup();
-    // Did we add the drawRectOriginal method?
-    bool drawRectOriginalAdded;
-    // Is the original drawRect method available?
-    bool originalDrawMethod;
-    // Do we need to change the methods?
-    bool changeMethods;
-
-    // Unified toolbar variables
-    bool isInUnifiedToolbar;
-    QUnifiedToolbarSurface *unifiedSurface;
-    QPoint toolbar_offset;
-    QWidget *toolbar_ancestor;
-    bool flushRequested;
-    bool touchEventsEnabled;
-    void determineWindowClass();
-    void transferChildren();
-    bool qt_mac_dnd_event(uint, DragRef);
-    void toggleDrawers(bool);
-    //mac event functions
-    static bool qt_create_root_win();
-    static void qt_clean_root_win();
-    static bool qt_mac_update_sizer(QWidget *, int up = 0);
-    static OSStatus qt_window_event(EventHandlerCallRef er, EventRef event, void *);
-    static OSStatus qt_widget_event(EventHandlerCallRef er, EventRef event, void *);
-    static bool qt_widget_rgn(QWidget *, short, RgnHandle, bool);
-    void registerTouchWindow(bool enable = true);
 #endif
     void setNetWmWindowTypes(bool skipIfMissing = false);