Fixes a crash when destroying and creating QApplication.

Moved the gestureManager pointer to a QApplicationPrivate to make sure if
QApplication object is destroyed, QGestureManager pointer is set to zero.

Task-number: QTBUG-7029
Reviewed-by: Thiago

1 files changed, 6 insertions, 4 deletions

diff --git a/src/gui/graphicsview/qgraphicsscene.cpp b/src/gui/graphicsview/qgraphicsscene.cpp
index e2e5714..034d1f7 100644
--- a/src/gui/graphicsview/qgraphicsscene.cpp
+++ b/src/gui/graphicsview/qgraphicsscene.cpp
@@ -1132,8 +1132,9 @@ bool QGraphicsScenePrivate::filterEvent(QGraphicsItem *item, QEvent *event)
 bool QGraphicsScenePrivate::sendEvent(QGraphicsItem *item, QEvent *event)
 {
     if (QGraphicsObject *object = item->toGraphicsObject()) {
-        if (qt_gestureManager) {
-            if (qt_gestureManager->filterEvent(object, event))
+        QGestureManager *gestureManager = QApplicationPrivate::instance()->gestureManager;
+        if (gestureManager) {
+            if (gestureManager->filterEvent(object, event))
                 return true;
         }
     }
@@ -6152,9 +6153,10 @@ void QGraphicsScenePrivate::cancelGesturesForChildren(QGesture *original, QWidge
         }
     }
 
-    Q_ASSERT(qt_gestureManager); // it would be very odd if we got called without a manager.
+    QGestureManager *gestureManager = QApplicationPrivate::instance()->gestureManager;
+    Q_ASSERT(gestureManager); // it would be very odd if we got called without a manager.
     for (setIter = canceledGestures.begin(); setIter != canceledGestures.end(); ++setIter) {
-        qt_gestureManager->recycle(*setIter);
+        gestureManager->recycle(*setIter);
         gestureTargets.remove(*setIter);
     }
 }