4 files changed, 15 insertions, 13 deletions
diff --git a/src/gui/kernel/qapplication.cpp b/src/gui/kernel/qapplication.cpp
index aaf479f..5c333b0 100644
--- a/src/gui/kernel/qapplication.cpp
+++ b/src/gui/kernel/qapplication.cpp
@@ -5791,10 +5791,12 @@ Q_GUI_EXPORT void qt_translateRawTouchEvent(QWidget *window,
 #ifndef QT_NO_GESTURES
 QGestureManager* QGestureManager::instance()
 {
-    QApplicationPrivate *qAppPriv = QApplicationPrivate::instance();
-    if (!qAppPriv->gestureManager)
-        qAppPriv->gestureManager = new QGestureManager(qApp);
-    return qAppPriv->gestureManager;
+    if (QApplicationPrivate *qAppPriv = QApplicationPrivate::instance()) {
+        if (!qAppPriv->gestureManager)
+            qAppPriv->gestureManager = new QGestureManager(qApp);
+        return qAppPriv->gestureManager;
+    }
+    return 0;
 }
 #endif // QT_NO_GESTURES
 
diff --git a/src/gui/kernel/qevent.cpp b/src/gui/kernel/qevent.cpp
index 92eed33..bbc9e0b 100644
--- a/src/gui/kernel/qevent.cpp
+++ b/src/gui/kernel/qevent.cpp
@@ -3627,7 +3627,7 @@ QMenubarUpdatedEvent::QMenubarUpdatedEvent(QMenuBar * const menuBar)
     \brief The QTouchEvent class contains parameters that describe a touch event.
     \since 4.6
     \ingroup events
-    \ingroup multitouch
+    \ingroup touch
 
     \section1 Enabling Touch Events
 
@@ -3641,7 +3641,7 @@ QMenubarUpdatedEvent::QMenubarUpdatedEvent(QMenuBar * const menuBar)
 
     Similarly to QMouseEvent, Qt automatically grabs each touch point on the first press inside a
     widget, and the widget will receive all updates for the touch point until it is released.
-    Note that it is possible for a widget to receive events for multiple touch points, and that
+    Note that it is possible for a widget to receive events for numerous touch points, and that
     multiple widgets may be receiving touch events at the same time.
 
     \section1 Event Handling
@@ -3717,7 +3717,7 @@ QMenubarUpdatedEvent::QMenubarUpdatedEvent(QMenuBar * const menuBar)
 
     \i As mentioned above, enabling touch events means multiple widgets can be receiving touch
     events simultaneously. Combined with the default QWidget::event() handling for QTouchEvents,
-    this gives you great flexibility in designing multi-touch user interfaces. Be aware of the
+    this gives you great flexibility in designing touch user interfaces. Be aware of the
     implications. For example, it is possible that the user is moving a QSlider with one finger and
     pressing a QPushButton with another. The signals emitted by these widgets will be
     interleaved.
@@ -3729,7 +3729,7 @@ QMenubarUpdatedEvent::QMenubarUpdatedEvent(QMenuBar * const menuBar)
 
     \i QTouchEvents are not affected by a \l{QWidget::grabMouse()}{mouse grab} or an
     \l{QApplication::activePopupWidget()}{active pop-up widget}. The behavior of QTouchEvents is
-    undefined when opening a pop-up or grabbing the mouse while there are multiple active touch
+    undefined when opening a pop-up or grabbing the mouse while there are more than one active touch
     points.
 
     \endlist
diff --git a/src/gui/kernel/qgesture.cpp b/src/gui/kernel/qgesture.cpp
index 6359ecf..4a4452a 100644
--- a/src/gui/kernel/qgesture.cpp
+++ b/src/gui/kernel/qgesture.cpp
@@ -306,10 +306,10 @@ void QPanGesture::setAcceleration(qreal value)
     \class QPinchGesture
     \since 4.6
     \brief The QPinchGesture class describes a pinch gesture made my the user.
-    \ingroup multitouch
+    \ingroup touch
     \ingroup gestures
 
-    A pinch gesture is a form of multitouch user input in which the user typically
+    A pinch gesture is a form of touch user input in which the user typically
     touches two points on the input device with a thumb and finger, before moving
     them closer together or further apart to change the scale factor, zoom, or level
     of detail of the user interface.
@@ -389,7 +389,7 @@ void QPanGesture::setAcceleration(qreal value)
     \brief the current scale factor
 
     The scale factor measures the scale factor associated with the distance
-    between two of the user's inputs on a multitouch device.
+    between two of the user's inputs on a touch device.
 
     \sa totalScaleFactor, lastScaleFactor
 */
diff --git a/src/gui/kernel/qwidget.cpp b/src/gui/kernel/qwidget.cpp
index fed8d0a..aaa29a1 100644
--- a/src/gui/kernel/qwidget.cpp
+++ b/src/gui/kernel/qwidget.cpp
@@ -12049,8 +12049,8 @@ void QWidget::ungrabGesture(Qt::GestureType gesture)
 {
     Q_D(QWidget);
     if (d->gestureContext.remove(gesture)) {
-        QGestureManager *manager = QGestureManager::instance();
-        manager->cleanupCachedGestures(this, gesture);
+        if (QGestureManager *manager = QGestureManager::instance())
+            manager->cleanupCachedGestures(this, gesture);
     }
 }
 #endif // QT_NO_GESTURES