diff --git a/src/widgets/dialogs/qdialog.cpp b/src/widgets/dialogs/qdialog.cpp
index 4170df4799..f1a6a294d2 100644
--- a/src/widgets/dialogs/qdialog.cpp
+++ b/src/widgets/dialogs/qdialog.cpp
@@ -754,7 +754,7 @@ void QDialog::setVisible(bool visible)
         }
 
 #ifndef QT_NO_ACCESSIBILITY
-        QAccessible::updateAccessibility(QAccessibleEvent(QAccessible::DialogStart, this, 0));
+        QAccessible::updateAccessibility(QAccessibleEvent(QAccessible::DialogStart, this));
 #endif
 
     } else {
@@ -763,7 +763,7 @@ void QDialog::setVisible(bool visible)
 
 #ifndef QT_NO_ACCESSIBILITY
         if (isVisible())
-            QAccessible::updateAccessibility(QAccessibleEvent(QAccessible::DialogEnd, this, 0));
+            QAccessible::updateAccessibility(QAccessibleEvent(QAccessible::DialogEnd, this));
 #endif
 
         // Reimplemented to exit a modal event loop when the dialog is hidden.
diff --git a/src/widgets/dialogs/qmessagebox.cpp b/src/widgets/dialogs/qmessagebox.cpp
index 3909125fe7..e1b134ee48 100644
--- a/src/widgets/dialogs/qmessagebox.cpp
+++ b/src/widgets/dialogs/qmessagebox.cpp
@@ -1463,7 +1463,7 @@ void QMessageBox::showEvent(QShowEvent *e)
     d->updateSize();
 
 #ifndef QT_NO_ACCESSIBILITY
-    QAccessible::updateAccessibility(QAccessibleEvent(QAccessible::Alert, this, 0));
+    QAccessible::updateAccessibility(QAccessibleEvent(QAccessible::Alert, this));
 #endif
 #ifdef Q_OS_WIN
     if (const HMENU systemMenu = qt_getWindowsSystemMenu(this)) {
diff --git a/src/widgets/graphicsview/qgraphicsscene.cpp b/src/widgets/graphicsview/qgraphicsscene.cpp
index 015cd254d4..830853094a 100644
--- a/src/widgets/graphicsview/qgraphicsscene.cpp
+++ b/src/widgets/graphicsview/qgraphicsscene.cpp
@@ -843,7 +843,7 @@ void QGraphicsScenePrivate::setFocusItemHelper(QGraphicsItem *item,
 #ifndef QT_NO_ACCESSIBILITY
     if (focusItem) {
         if (QGraphicsObject *focusObj = focusItem->toGraphicsObject()) {
-            QAccessible::updateAccessibility(QAccessibleEvent(QAccessible::Focus, focusObj, 0));
+            QAccessible::updateAccessibility(QAccessibleEvent(QAccessible::Focus, focusObj));
         }
     }
 #endif
diff --git a/src/widgets/kernel/qwhatsthis.cpp b/src/widgets/kernel/qwhatsthis.cpp
index 4a6f3518d0..1c20b98139 100644
--- a/src/widgets/kernel/qwhatsthis.cpp
+++ b/src/widgets/kernel/qwhatsthis.cpp
@@ -412,7 +412,7 @@ QWhatsThisPrivate::QWhatsThisPrivate()
 #endif
     }
 #ifndef QT_NO_ACCESSIBILITY
-    QAccessible::updateAccessibility(QAccessibleEvent(QAccessible::ContextHelpStart, this, 0));
+    QAccessible::updateAccessibility(QAccessibleEvent(QAccessible::ContextHelpStart, this));
 #endif
 }
 
@@ -424,7 +424,7 @@ QWhatsThisPrivate::~QWhatsThisPrivate()
     QApplication::restoreOverrideCursor();
 #endif
 #ifndef QT_NO_ACCESSIBILITY
-    QAccessible::updateAccessibility(QAccessibleEvent(QAccessible::ContextHelpEnd, this, 0));
+    QAccessible::updateAccessibility(QAccessibleEvent(QAccessible::ContextHelpEnd, this));
 #endif
     instance = 0;
 }
diff --git a/src/widgets/kernel/qwidget.cpp b/src/widgets/kernel/qwidget.cpp
index bf864503a4..03ada1ac7a 100644
--- a/src/widgets/kernel/qwidget.cpp
+++ b/src/widgets/kernel/qwidget.cpp
@@ -5965,7 +5965,7 @@ void QWidget::setFocus(Qt::FocusReason reason)
         // menus update the focus manually and this would create bogus events
         if (!(f->inherits("QMenuBar") || f->inherits("QMenu") || f->inherits("QMenuItem")))
 # endif
-            QAccessible::updateAccessibility(QAccessibleEvent(QAccessible::Focus, f, 0));
+            QAccessible::updateAccessibility(QAccessibleEvent(QAccessible::Focus, f));
 #endif
 #ifndef QT_NO_GRAPHICSVIEW
         if (QWExtra *topData = window()->d_func()->extra) {
@@ -6045,7 +6045,7 @@ void QWidget::clearFocus()
 #endif
         {
 #ifndef QT_NO_ACCESSIBILITY
-            QAccessible::updateAccessibility(QAccessibleEvent(QAccessible::Focus, this, 0));
+            QAccessible::updateAccessibility(QAccessibleEvent(QAccessible::Focus, this));
 #endif
         }
     }
@@ -7052,7 +7052,7 @@ void QWidgetPrivate::show_helper()
 
 #ifndef QT_NO_ACCESSIBILITY
     if (q->windowType() != Qt::ToolTip)     // Tooltips are read aloud twice in MS narrator.
-        QAccessible::updateAccessibility(QAccessibleEvent(QAccessible::ObjectShow, q, 0));
+        QAccessible::updateAccessibility(QAccessibleEvent(QAccessible::ObjectShow, q));
 #endif
 
     if (QApplicationPrivate::hidden_focus_widget == q) {
@@ -7143,7 +7143,7 @@ void QWidgetPrivate::hide_helper()
 
 #ifndef QT_NO_ACCESSIBILITY
     if (wasVisible)
-        QAccessible::updateAccessibility(QAccessibleEvent(QAccessible::ObjectHide, q, 0));
+        QAccessible::updateAccessibility(QAccessibleEvent(QAccessible::ObjectHide, q));
 #endif
 }
 
@@ -7375,7 +7375,7 @@ void QWidgetPrivate::hideChildren(bool spontaneous)
         qApp->d_func()->sendSyntheticEnterLeave(widget);
 #ifndef QT_NO_ACCESSIBILITY
         if (!spontaneous)
-            QAccessible::updateAccessibility(QAccessibleEvent(QAccessible::ObjectHide, widget, 0));
+            QAccessible::updateAccessibility(QAccessibleEvent(QAccessible::ObjectHide, widget));
 #endif
     }
 }
@@ -10386,7 +10386,7 @@ void QWidget::setAccessibleName(const QString &name)
 {
     Q_D(QWidget);
     d->accessibleName = name;
-    QAccessible::updateAccessibility(QAccessibleEvent(QAccessible::NameChanged, this, 0));
+    QAccessible::updateAccessibility(QAccessibleEvent(QAccessible::NameChanged, this));
 }
 
 QString QWidget::accessibleName() const
@@ -10408,7 +10408,7 @@ void QWidget::setAccessibleDescription(const QString &description)
 {
     Q_D(QWidget);
     d->accessibleDescription = description;
-    QAccessible::updateAccessibility(QAccessibleEvent(QAccessible::DescriptionChanged, this, 0));
+    QAccessible::updateAccessibility(QAccessibleEvent(QAccessible::DescriptionChanged, this));
 }
 
 QString QWidget::accessibleDescription() const
diff --git a/src/widgets/widgets/qabstractbutton.cpp b/src/widgets/widgets/qabstractbutton.cpp
index 80e125947e..f7c8ad7773 100644
--- a/src/widgets/widgets/qabstractbutton.cpp
+++ b/src/widgets/widgets/qabstractbutton.cpp
@@ -647,7 +647,7 @@ void QAbstractButton::setText(const QString &text)
     update();
     updateGeometry();
 #ifndef QT_NO_ACCESSIBILITY
-    QAccessible::updateAccessibility(QAccessibleEvent(QAccessible::NameChanged, this, 0));
+    QAccessible::updateAccessibility(QAccessibleEvent(QAccessible::NameChanged, this));
 #endif
 }
 
diff --git a/src/widgets/widgets/qabstractslider.cpp b/src/widgets/widgets/qabstractslider.cpp
index 6aff2e9077..b0216e5277 100644
--- a/src/widgets/widgets/qabstractslider.cpp
+++ b/src/widgets/widgets/qabstractslider.cpp
@@ -538,7 +538,7 @@ void QAbstractSlider::setValue(int value)
             emit sliderMoved((d->position = value));
     }
 #ifndef QT_NO_ACCESSIBILITY
-    QAccessible::updateAccessibility(QAccessibleEvent(QAccessible::ValueChanged, this, 0));
+    QAccessible::updateAccessibility(QAccessibleEvent(QAccessible::ValueChanged, this));
 #endif
     sliderChange(SliderValueChange);
     emit valueChanged(value);
diff --git a/src/widgets/widgets/qabstractspinbox.cpp b/src/widgets/widgets/qabstractspinbox.cpp
index e9652a9869..c083369136 100644
--- a/src/widgets/widgets/qabstractspinbox.cpp
+++ b/src/widgets/widgets/qabstractspinbox.cpp
@@ -976,7 +976,7 @@ void QAbstractSpinBox::keyPressEvent(QKeyEvent *event)
             }
         }
 #ifndef QT_NO_ACCESSIBILITY
-        QAccessible::updateAccessibility(QAccessibleEvent(QAccessible::ValueChanged, this, 0));
+        QAccessible::updateAccessibility(QAccessibleEvent(QAccessible::ValueChanged, this));
 #endif
         return;
     }
@@ -1595,7 +1595,7 @@ void QAbstractSpinBoxPrivate::updateState(bool up, bool fromKeyboard /* = false
         buttonState = (up ? Up : Down) | (fromKeyboard ? Keyboard : Mouse);
         q->stepBy(up ? 1 : -1);
 #ifndef QT_NO_ACCESSIBILITY
-        QAccessible::updateAccessibility(QAccessibleEvent(QAccessible::ValueChanged, q, 0));
+        QAccessible::updateAccessibility(QAccessibleEvent(QAccessible::ValueChanged, q));
 #endif
     }
 }
diff --git a/src/widgets/widgets/qlineedit_p.cpp b/src/widgets/widgets/qlineedit_p.cpp
index e3404a62de..d06e98e31a 100644
--- a/src/widgets/widgets/qlineedit_p.cpp
+++ b/src/widgets/widgets/qlineedit_p.cpp
@@ -144,7 +144,7 @@ void QLineEditPrivate::_q_selectionChanged()
 
     emit q->selectionChanged();
 #ifndef QT_NO_ACCESSIBILITY
-    QAccessible::updateAccessibility(QAccessibleEvent(QAccessible::TextSelectionChanged, q, 0));
+    QAccessible::updateAccessibility(QAccessibleEvent(QAccessible::TextSelectionChanged, q));
 #endif
 }
 
diff --git a/src/widgets/widgets/qmenu.cpp b/src/widgets/widgets/qmenu.cpp
index fd030a5383..af4a87e282 100644
--- a/src/widgets/widgets/qmenu.cpp
+++ b/src/widgets/widgets/qmenu.cpp
@@ -2091,7 +2091,7 @@ void QMenu::hideEvent(QHideEvent *)
         d->eventLoop->exit();
     d->setCurrentAction(0);
 #ifndef QT_NO_ACCESSIBILITY
-    QAccessible::updateAccessibility(QAccessibleEvent(QAccessible::PopupMenuEnd, this, 0));
+    QAccessible::updateAccessibility(QAccessibleEvent(QAccessible::PopupMenuEnd, this));
 #endif
 #ifndef QT_NO_MENUBAR
     if (QMenuBar *mb = qobject_cast<QMenuBar*>(d->causedPopup.widget))
diff --git a/src/widgets/widgets/qprogressbar.cpp b/src/widgets/widgets/qprogressbar.cpp
index 816b847cf5..c1a34bfb7a 100644
--- a/src/widgets/widgets/qprogressbar.cpp
+++ b/src/widgets/widgets/qprogressbar.cpp
@@ -314,7 +314,7 @@ void QProgressBar::setValue(int value)
     d->value = value;
     emit valueChanged(value);
 #ifndef QT_NO_ACCESSIBILITY
-    QAccessible::updateAccessibility(QAccessibleEvent(QAccessible::ValueChanged, this, 0));
+    QAccessible::updateAccessibility(QAccessibleEvent(QAccessible::ValueChanged, this));
 #endif
     if (d->repaintRequired())
         repaint();
diff --git a/src/widgets/widgets/qwidgetlinecontrol.cpp b/src/widgets/widgets/qwidgetlinecontrol.cpp
index 73c3d14f9b..a04339f864 100644
--- a/src/widgets/widgets/qwidgetlinecontrol.cpp
+++ b/src/widgets/widgets/qwidgetlinecontrol.cpp
@@ -768,7 +768,7 @@ void QWidgetLineControl::internalSetText(const QString &txt, int pos, bool edite
 
 #ifndef QT_NO_ACCESSIBILITY
     if (changed)
-        QAccessible::updateAccessibility(QAccessibleEvent(QAccessible::TextUpdated, parent(), 0));
+        QAccessible::updateAccessibility(QAccessibleEvent(QAccessible::TextUpdated, parent()));
 #endif
 }
 
@@ -1367,7 +1367,7 @@ void QWidgetLineControl::emitCursorPositionChanged()
         m_lastCursorPos = m_cursor;
         cursorPositionChanged(oldLast, m_cursor);
 #ifndef QT_NO_ACCESSIBILITY
-        QAccessible::updateAccessibility(QAccessibleEvent(QAccessible::TextCaretMoved, parent(), 0));
+        QAccessible::updateAccessibility(QAccessibleEvent(QAccessible::TextCaretMoved, parent()));
 #endif
     }
 }
diff --git a/tests/auto/other/qaccessibility/tst_qaccessibility.cpp b/tests/auto/other/qaccessibility/tst_qaccessibility.cpp
index 4c370bebc7..3e3fce2e1c 100644
--- a/tests/auto/other/qaccessibility/tst_qaccessibility.cpp
+++ b/tests/auto/other/qaccessibility/tst_qaccessibility.cpp
@@ -415,7 +415,7 @@ void tst_QAccessibility::eventTest()
     button->setObjectName(QString("Olaf"));
 
     button->show();
-    QVERIFY_EVENT(button, 0, QAccessible::ObjectShow);
+    QVERIFY_EVENT(button, -1, QAccessible::ObjectShow);
     button->setFocus(Qt::MouseFocusReason);
     QTestAccessibility::clearEvents();
     QTest::mouseClick(button, Qt::LeftButton, 0);
@@ -423,12 +423,12 @@ void tst_QAccessibility::eventTest()
     QVERIFY_EVENT(button, 0, QAccessible::StateChanged);
 
     button->setAccessibleName("Olaf the second");
-    QVERIFY_EVENT(button, 0, QAccessible::NameChanged);
+    QVERIFY_EVENT(button, -1, QAccessible::NameChanged);
     button->setAccessibleDescription("This is a button labeled Olaf");
-    QVERIFY_EVENT(button, 0, QAccessible::DescriptionChanged);
+    QVERIFY_EVENT(button, -1, QAccessible::DescriptionChanged);
 
     button->hide();
-    QVERIFY_EVENT(button, 0, QAccessible::ObjectHide);
+    QVERIFY_EVENT(button, -1, QAccessible::ObjectHide);
 
     delete button;
 }
@@ -732,16 +732,16 @@ void tst_QAccessibility::hideShowTest()
     window->show();
     QVERIFY(!state(window).invisible);
     QVERIFY(!state(child).invisible);
-    QVERIFY(QTestAccessibility::events().contains(QTestAccessibilityEvent(window, 0, QAccessible::ObjectShow)));
-    QVERIFY(QTestAccessibility::events().contains(QTestAccessibilityEvent(child, 0, QAccessible::ObjectShow)));
+    QVERIFY(QTestAccessibility::events().contains(QTestAccessibilityEvent(window, -1, QAccessible::ObjectShow)));
+    QVERIFY(QTestAccessibility::events().contains(QTestAccessibilityEvent(child, -1, QAccessible::ObjectShow)));
     QTestAccessibility::clearEvents();
 
     // hide() and veryfy that both window and child are invisible and get ObjectHide events.
     window->hide();
     QVERIFY(state(window).invisible);
     QVERIFY(state(child).invisible);
-    QVERIFY(QTestAccessibility::events().contains(QTestAccessibilityEvent(window, 0, QAccessible::ObjectHide)));
-    QVERIFY(QTestAccessibility::events().contains(QTestAccessibilityEvent(child, 0, QAccessible::ObjectHide)));
+    QVERIFY(QTestAccessibility::events().contains(QTestAccessibilityEvent(window, -1, QAccessible::ObjectHide)));
+    QVERIFY(QTestAccessibility::events().contains(QTestAccessibilityEvent(child, -1, QAccessible::ObjectHide)));
     QTestAccessibility::clearEvents();
 
     delete window;
@@ -822,7 +822,7 @@ void tst_QAccessibility::mainWindowTest()
     QLatin1String name = QLatin1String("I am the main window");
     mw->setWindowTitle(name);
     QTest::qWaitForWindowShown(mw);
-    QVERIFY_EVENT(mw, 0, QAccessible::ObjectShow);
+    QVERIFY_EVENT(mw, -1, QAccessible::ObjectShow);
 
     QAccessibleInterface *interface = QAccessible::queryAccessibleInterface(mw);
     QCOMPARE(interface->text(QAccessible::Name), name);
@@ -1052,12 +1052,12 @@ void tst_QAccessibility::scrollBarTest()
     scrollBar->resize(200, 50);
     scrollBar->show();
     QVERIFY(!scrollBarInterface->state().invisible);
-    QVERIFY(QTestAccessibility::events().contains(QTestAccessibilityEvent(scrollBar, 0, QAccessible::ObjectShow)));
+    QVERIFY(QTestAccessibility::events().contains(QTestAccessibilityEvent(scrollBar, -1, QAccessible::ObjectShow)));
     QTestAccessibility::clearEvents();
 
     scrollBar->hide();
     QVERIFY(scrollBarInterface->state().invisible);
-    QVERIFY(QTestAccessibility::events().contains(QTestAccessibilityEvent(scrollBar, 0, QAccessible::ObjectHide)));
+    QVERIFY(QTestAccessibility::events().contains(QTestAccessibilityEvent(scrollBar, -1, QAccessible::ObjectHide)));
     QTestAccessibility::clearEvents();
 
     // Test that the left/right subcontrols are set to unavailable when the scrollBar is at the minimum/maximum.
@@ -1498,7 +1498,7 @@ void tst_QAccessibility::spinBoxTest()
     QTest::keyPress(spinBox, Qt::Key_Up);
     QTest::qWait(200);
     EventList events = QTestAccessibility::events();
-    QTestAccessibilityEvent expectedEvent(spinBox, 0, (int)QAccessible::ValueChanged);
+    QTestAccessibilityEvent expectedEvent(spinBox, -1, (int)QAccessible::ValueChanged);
     QVERIFY(events.contains(expectedEvent));
     delete spinBox;
     QTestAccessibility::clearEvents();
@@ -1769,7 +1769,7 @@ void tst_QAccessibility::lineEditTest()
     le->setFocus(Qt::TabFocusReason);
     QTestAccessibility::clearEvents();
     le2->setFocus(Qt::TabFocusReason);
-    QTRY_VERIFY(QTestAccessibility::events().contains(QTestAccessibilityEvent(le2, 0, QAccessible::Focus)));
+    QTRY_VERIFY(QTestAccessibility::events().contains(QTestAccessibilityEvent(le2, -1, QAccessible::Focus)));
 
     le->setText(QLatin1String("500"));
     le->setValidator(new QIntValidator());
@@ -1789,7 +1789,7 @@ void tst_QAccessibility::lineEditTest()
     le3->deselect();
     le3->setCursorPosition(3);
     QCOMPARE(textIface->cursorPosition(), 3);
-    QTRY_VERIFY(QTestAccessibility::events().contains(QTestAccessibilityEvent(le3, 0, QAccessible::TextCaretMoved)));
+    QTRY_VERIFY(QTestAccessibility::events().contains(QTestAccessibilityEvent(le3, -1, QAccessible::TextCaretMoved)));
     QCOMPARE(textIface->selectionCount(), 0);
     QTestAccessibility::clearEvents();