Merge commit 'dev' into 'wip/cmake-merge'

Change-Id: I176c40d031be26a1dd1cf08843e448a660598783

32 files changed, 307 insertions, 183 deletions

diff --git a/src/widgets/doc/images/gridlayout.png b/src/widgets/doc/images/qgridlayout.png
index ae76c0487b..ae76c0487b 100644
--- a/src/widgets/doc/images/gridlayout.png
+++ b/src/widgets/doc/images/qgridlayout.png
diff --git a/src/widgets/doc/qtwidgets.qdocconf b/src/widgets/doc/qtwidgets.qdocconf
index 4700ee29bf..5d7262fca1 100644
--- a/src/widgets/doc/qtwidgets.qdocconf
+++ b/src/widgets/doc/qtwidgets.qdocconf
@@ -40,6 +40,9 @@ exampledirs += ../../../examples/widgets \
 
 excludedirs += snippets
 
+# Included in qttestlib.qdocconf instead
+excludefiles += ../kernel/qtestsupport_widgets.cpp
+
 imagedirs   += images \
                ../../../doc/src/images \
                ../../../examples/widgets/doc/images \
diff --git a/src/widgets/doc/snippets/code/doc_src_examples_dropsite.qdoc b/src/widgets/doc/snippets/code/doc_src_examples_dropsite.qdoc
deleted file mode 100644
index a91933cdce..0000000000
--- a/src/widgets/doc/snippets/code/doc_src_examples_dropsite.qdoc
+++ /dev/null
@@ -1,55 +0,0 @@
-/****************************************************************************
-**
-** Copyright (C) 2016 The Qt Company Ltd.
-** Contact: https://www.qt.io/licensing/
-**
-** This file is part of the documentation of the Qt Toolkit.
-**
-** $QT_BEGIN_LICENSE:BSD$
-** Commercial License Usage
-** Licensees holding valid commercial Qt licenses may use this file in
-** accordance with the commercial license agreement provided with the
-** Software or, alternatively, in accordance with the terms contained in
-** a written agreement between you and The Qt Company. For licensing terms
-** and conditions see https://www.qt.io/terms-conditions. For further
-** information use the contact form at https://www.qt.io/contact-us.
-**
-** BSD License Usage
-** Alternatively, you may use this file under the terms of the BSD license
-** as follows:
-**
-** "Redistribution and use in source and binary forms, with or without
-** modification, are permitted provided that the following conditions are
-** met:
-**   * Redistributions of source code must retain the above copyright
-**     notice, this list of conditions and the following disclaimer.
-**   * Redistributions in binary form must reproduce the above copyright
-**     notice, this list of conditions and the following disclaimer in
-**     the documentation and/or other materials provided with the
-**     distribution.
-**   * Neither the name of The Qt Company Ltd nor the names of its
-**     contributors may be used to endorse or promote products derived
-**     from this software without specific prior written permission.
-**
-**
-** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
-**
-** $QT_END_LICENSE$
-**
-****************************************************************************/
-
-//! [0]
-\code
-foreach(variable, container)
-\endcode
-//! [0]
diff --git a/src/widgets/doc/snippets/code/doc_src_stylesheet.qdoc b/src/widgets/doc/snippets/code/doc_src_stylesheet.qdoc
index 48d8954e60..098eaf4717 100644
--- a/src/widgets/doc/snippets/code/doc_src_stylesheet.qdoc
+++ b/src/widgets/doc/snippets/code/doc_src_stylesheet.qdoc
@@ -956,6 +956,7 @@ QLineEdit[echoMode="2"] {
 //! [119]
 QLineEdit:read-only {
     background: lightblue;
+}
 //! [119]
 
 
diff --git a/src/widgets/doc/snippets/code/src_gui_dialogs_qfiledialog.cpp b/src/widgets/doc/snippets/code/src_gui_dialogs_qfiledialog.cpp
index 58f0ae560f..1e9daf824b 100644
--- a/src/widgets/doc/snippets/code/src_gui_dialogs_qfiledialog.cpp
+++ b/src/widgets/doc/snippets/code/src_gui_dialogs_qfiledialog.cpp
@@ -140,3 +140,18 @@ QFileDialog dialog(this);
 dialog.setMimeTypeFilters(mimeTypeFilters);
 dialog.exec();
 //! [13]
+
+//! [14]
+"Images (*.png *.xpm *.jpg);;Text files (*.txt);;XML files (*.xml)"
+//! [14]
+
+//! [14]
+auto fileOpenCompleted = [](const QSting &fileName, const QByteArray &fileContent) {
+    if (fileName.isEmpty()) {
+        // No file was selected
+    } else {
+        // Use fileName and fileContent
+    }
+}
+QFileDialog::getOpenFileContent("Images (*.png *.xpm *.jpg)",  fileContentReady);
+//! [14]
diff --git a/src/widgets/doc/snippets/code/src_gui_graphicsview_qgraphicsitem.cpp b/src/widgets/doc/snippets/code/src_gui_graphicsview_qgraphicsitem.cpp
index 8d8c63db9e..ebca9d5368 100644
--- a/src/widgets/doc/snippets/code/src_gui_graphicsview_qgraphicsitem.cpp
+++ b/src/widgets/doc/snippets/code/src_gui_graphicsview_qgraphicsitem.cpp
@@ -271,3 +271,18 @@ QRect deviceRect = xform.mapRect(rect).toAlignedRect();
 view->viewport()->scroll(dx, dy, deviceRect);
 //! [19]
 
+//! [20]
+item->setTransform(QTransform().rotate(angle), true);
+//! [20]
+
+//! [21]
+setTransform(QTransform::fromScale(sx, sy), true);
+//! [21]
+
+//! [22]
+setTransform(QTransform().shear(sh, sv), true);
+//! [22]
+
+//! [23]
+setTransform(QTransform::fromTranslate(dx, dy), true);
+//! [23]
diff --git a/src/widgets/doc/snippets/code/src_gui_itemviews_qdatawidgetmapper.cpp b/src/widgets/doc/snippets/code/src_gui_itemviews_qdatawidgetmapper.cpp
index 4dad563660..cc1568cb9d 100644
--- a/src/widgets/doc/snippets/code/src_gui_itemviews_qdatawidgetmapper.cpp
+++ b/src/widgets/doc/snippets/code/src_gui_itemviews_qdatawidgetmapper.cpp
@@ -59,7 +59,7 @@ mapper->toFirst();
 
 
 //! [1]
-QDataWidgetMapper *mapper = new QDataWidgetMapper();
+QDataWidgetMapper *mapper = new QDataWidgetMapper;
 mapper->setModel(myModel);
 mapper->addMapping(nameLineEdit, 0);
 mapper->addMapping(ageSpinBox, 1);
@@ -67,7 +67,7 @@ mapper->addMapping(ageSpinBox, 1);
 
 
 //! [2]
-QDataWidgetMapper *mapper = new QDataWidgetMapper();
-connect(myTableView->selectionModel(), SIGNAL(currentRowChanged(QModelIndex,QModelIndex)),
-        mapper, SLOT(setCurrentModelIndex(QModelIndex)));
+QDataWidgetMapper *mapper = new QDataWidgetMapper;
+connect(myTableView->selectionModel(), &QItemSelectionModel::currentRowChanged,
+        mapper, &QDataWidgetMapper::setCurrentModelIndex);
 //! [2]
diff --git a/src/widgets/doc/snippets/code/src_gui_kernel_qapplication.cpp b/src/widgets/doc/snippets/code/src_gui_kernel_qapplication.cpp
index a907a0421f..0a70c1d32a 100644
--- a/src/widgets/doc/snippets/code/src_gui_kernel_qapplication.cpp
+++ b/src/widgets/doc/snippets/code/src_gui_kernel_qapplication.cpp
@@ -100,7 +100,8 @@ QSize MyWidget::sizeHint() const
 //! [4]
 void showAllHiddenTopLevelWidgets()
 {
-    foreach (QWidget *widget, QApplication::topLevelWidgets()) {
+    const QWidgetList topLevelWidgets = QApplication::topLevelWidgets();
+    for (QWidget *widget : topLevelWidgets) {
         if (widget->isHidden())
             widget->show();
     }
@@ -111,7 +112,8 @@ void showAllHiddenTopLevelWidgets()
 //! [5]
 void updateAllWidgets()
 {
-    foreach (QWidget *widget, QApplication::allWidgets())
+    const QWidgetList allWidgets = QApplication::allWidgets();
+    for (QWidget *widget : allWidgets)
         widget->update();
 }
 //! [5]
@@ -171,13 +173,15 @@ appname -session id
 
 
 //! [10]
-foreach (const QString &command, mySession.restartCommand())
+const QStringList commands = mySession.restartCommand();
+for (const QString &command : commands)
     do_something(command);
 //! [10]
 
 
 //! [11]
-foreach (const QString &command, mySession.discardCommand())
+const QStringList commands = mySession.discardCommand();
+for (const QString &command : commands)
     do_something(command);
 //! [11]
 
diff --git a/src/widgets/doc/snippets/code/src_gui_kernel_qformlayout.cpp b/src/widgets/doc/snippets/code/src_gui_kernel_qformlayout.cpp
index eadf753ded..a2ac780a82 100644
--- a/src/widgets/doc/snippets/code/src_gui_kernel_qformlayout.cpp
+++ b/src/widgets/doc/snippets/code/src_gui_kernel_qformlayout.cpp
@@ -84,3 +84,51 @@ formLayout->setFieldGrowthPolicy(QFormLayout::FieldsStayAtSizeHint);
 formLayout->setFormAlignment(Qt::AlignHCenter | Qt::AlignTop);
 formLayout->setLabelAlignment(Qt::AlignLeft);
 //! [2]
+
+//! [3]
+QFormLayout *flay = ...;
+QPointer<QLineEdit> le = new QLineEdit;
+flay->insertRow(2, "User:", le);
+// later:
+flay->removeRow(2); // le == nullptr at this point
+//! [3]
+
+//! [4]
+QFormLayout *flay = ...;
+QPointer<QLineEdit> le = new QLineEdit;
+flay->insertRow(2, "User:", le);
+// later:
+flay->removeRow(le); // le == nullptr at this point
+//! [4]
+
+//! [5]
+QFormLayout *flay = ...;
+QPointer<QVBoxLayout> vbl = new QVBoxLayout;
+flay->insertRow(2, "User:", vbl);
+// later:
+flay->removeRow(layout); // vbl == nullptr at this point
+//! [5]
+
+//! [6]
+QFormLayout *flay = ...;
+QPointer<QLineEdit> le = new QLineEdit;
+flay->insertRow(2, "User:", le);
+// later:
+QFormLayout::TakeRowResult result = flay->takeRow(2);
+//! [6]
+
+//! [7]
+QFormLayout *flay = ...;
+QPointer<QLineEdit> le = new QLineEdit;
+flay->insertRow(2, "User:", le);
+// later:
+QFormLayout::TakeRowResult result = flay->takeRow(widget);
+//! [7]
+
+//! [8]
+QFormLayout *flay = ...;
+QPointer<QVBoxLayout> vbl = new QVBoxLayout;
+flay->insertRow(2, "User:", vbl);
+// later:
+QFormLayout::TakeRowResult result = flay->takeRow(widget);
+//! [8]
diff --git a/src/widgets/doc/snippets/code/src_gui_widgets_qmenu.cpp b/src/widgets/doc/snippets/code/src_gui_widgets_qmenu.cpp
index 4b1c4cd645..da3fd28056 100644
--- a/src/widgets/doc/snippets/code/src_gui_widgets_qmenu.cpp
+++ b/src/widgets/doc/snippets/code/src_gui_widgets_qmenu.cpp
@@ -81,7 +81,7 @@ exec(e->globalPos());
 //! [6]
 QMenu menu;
 QAction *at = actions[0]; // Assumes actions is not empty
-foreach (QAction *a, actions)
+for (QAction *a : qAsConst(actions))
     menu.addAction(a);
 menu.exec(pos, at);
 //! [6]
diff --git a/src/widgets/doc/snippets/code/src_widgets_util_qscroller.cpp b/src/widgets/doc/snippets/code/src_widgets_util_qscroller.cpp
new file mode 100644
index 0000000000..2b3d825266
--- /dev/null
+++ b/src/widgets/doc/snippets/code/src_widgets_util_qscroller.cpp
@@ -0,0 +1,49 @@
+/****************************************************************************
+**
+** Copyright (C) 2018 The Qt Company Ltd.
+** Contact: https://www.qt.io/licensing/
+**
+** This file is part of the QtWidgets module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and The Qt Company. For licensing terms
+** and conditions see https://www.qt.io/terms-conditions. For further
+** information use the contact form at https://www.qt.io/contact-us.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 3 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL3 included in the
+** packaging of this file. Please review the following information to
+** ensure the GNU Lesser General Public License version 3 requirements
+** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 2.0 or (at your option) the GNU General
+** Public license version 3 or any later version approved by the KDE Free
+** Qt Foundation. The licenses are as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3
+** included in the packaging of this file. Please review the following
+** information to ensure the GNU General Public License requirements will
+** be met: https://www.gnu.org/licenses/gpl-2.0.html and
+** https://www.gnu.org/licenses/gpl-3.0.html.
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+//! [0]
+    QWidget *w = ...;
+    QScroller::grabGesture(w, QScroller::LeftMouseButtonGesture);
+//! [0]
+
+//! [1]
+    QWidget *w = ...;
+    QScroller *scroller = QScroller::scroller(w);
+    scroller->scrollTo(QPointF(100, 100));
+//! [1]
diff --git a/src/widgets/doc/snippets/code/src_widgets_widgets_qmainwindow.cpp b/src/widgets/doc/snippets/code/src_widgets_widgets_qmainwindow.cpp
new file mode 100644
index 0000000000..8ebaaf3991
--- /dev/null
+++ b/src/widgets/doc/snippets/code/src_widgets_widgets_qmainwindow.cpp
@@ -0,0 +1,58 @@
+/****************************************************************************
+**
+** Copyright (C) 2018 The Qt Company Ltd.
+** Contact: https://www.qt.io/licensing/
+**
+** This file is part of the QtWidgets module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and The Qt Company. For licensing terms
+** and conditions see https://www.qt.io/terms-conditions. For further
+** information use the contact form at https://www.qt.io/contact-us.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 3 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL3 included in the
+** packaging of this file. Please review the following information to
+** ensure the GNU Lesser General Public License version 3 requirements
+** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 2.0 or (at your option) the GNU General
+** Public license version 3 or any later version approved by the KDE Free
+** Qt Foundation. The licenses are as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3
+** included in the packaging of this file. Please review the following
+** information to ensure the GNU General Public License requirements will
+** be met: https://www.gnu.org/licenses/gpl-2.0.html and
+** https://www.gnu.org/licenses/gpl-3.0.html.
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+//! [0]
+    void MainWindow::createMenus()
+    {
+        fileMenu = menuBar()->addMenu(tr("&File"));
+        fileMenu->addAction(newAct);
+        fileMenu->addAction(openAct);
+        fileMenu->addAction(saveAct);
+//! [0]
+
+//! [1]
+    void MainWindow::createToolBars()
+    {
+        fileToolBar = addToolBar(tr("File"));
+        fileToolBar->addAction(newAct);
+//! [1]
+
+//! [2]
+    resizeDocks({blueWidget, yellowWidget}, {20 , 40}, Qt::Horizontal);
+//! [2]
diff --git a/src/widgets/doc/snippets/dialogs/dialogs.cpp b/src/widgets/doc/snippets/dialogs/dialogs.cpp
index cca3ac8d75..7fa793c70f 100644
--- a/src/widgets/doc/snippets/dialogs/dialogs.cpp
+++ b/src/widgets/doc/snippets/dialogs/dialogs.cpp
@@ -48,7 +48,7 @@
 **
 ****************************************************************************/
 
-#include <QtGui>
+#include <QtWidgets>
 
 typedef QDialog WordCountDialog;
 typedef QDialog FindDialog;
@@ -76,7 +76,8 @@ void EditorWindow::find()
 {
     if (!findDialog) {
         findDialog = new FindDialog(this);
-        connect(findDialog, SIGNAL(findNext()), this, SLOT(findNext()));
+        connect(findDialog, &FindDialog::findNext,
+                this, &EditorWindow::findNext);
     }
 
     findDialog->show();
@@ -249,9 +250,9 @@ Operation::Operation(QObject *parent)
     : QObject(parent), steps(0)
 {
     pd = new QProgressDialog("Operation in progress.", "Cancel", 0, 100);
-    connect(pd, SIGNAL(canceled()), this, SLOT(cancel()));
+    connect(pd, &QProgressDialog::canceled, this, &Operation::cancel);
     t = new QTimer(this);
-    connect(t, SIGNAL(timeout()), this, SLOT(perform()));
+    connect(t, &QTimer::timeout, this, &Operation::perform);
     t->start(0);
 }
 //! [4] //! [5]
diff --git a/src/widgets/doc/snippets/dockwidgets/mainwindow.cpp b/src/widgets/doc/snippets/dockwidgets/mainwindow.cpp
index f6959cc12b..53f91589bf 100644
--- a/src/widgets/doc/snippets/dockwidgets/mainwindow.cpp
+++ b/src/widgets/doc/snippets/dockwidgets/mainwindow.cpp
@@ -48,7 +48,7 @@
 **
 ****************************************************************************/
 
-#include <QtGui>
+#include <QtWidgets>
 
 #include "mainwindow.h"
 
@@ -63,8 +63,8 @@ MainWindow::MainWindow(QWidget *parent)
 
     textBrowser = new QTextBrowser(this);
 
-    connect(headingList, SIGNAL(itemClicked(QListWidgetItem*)),
-            this, SLOT(updateText(QListWidgetItem*)));
+    connect(headingList, &QListWidget::itemClicked,
+            this, &MainWindow::updateText);
 
     updateText(headingList->item(0));
     headingList->setCurrentRow(0);
@@ -119,7 +119,7 @@ void MainWindow::setupMenus()
     QAction *exitAct = new QAction(tr("E&xit"), this);
     exitAct->setShortcut(tr("Ctrl+Q"));
     exitAct->setStatusTip(tr("Exit the application"));
-    connect(exitAct, SIGNAL(triggered()), qApp, SLOT(closeAllWindows()));
+    connect(exitAct, &QAction::triggered, qApp, &QApplication::closeAllWindows);
 
     QMenu *fileMenu = menuBar()->addMenu(tr("&File"));
     fileMenu->addAction(exitAct);
diff --git a/src/widgets/doc/snippets/mdiareasnippets.cpp b/src/widgets/doc/snippets/mdiareasnippets.cpp
index b9d6f05daf..dec7aaa1e7 100644
--- a/src/widgets/doc/snippets/mdiareasnippets.cpp
+++ b/src/widgets/doc/snippets/mdiareasnippets.cpp
@@ -48,7 +48,7 @@
 **
 ****************************************************************************/
 
-#include <QtGui>
+#include <QtWidgets>
 
 void mainWindowExample()
 {
@@ -95,7 +95,7 @@ int main(int argv, char **args)
    QAction *act = new QAction(qApp);
    act->setShortcut(Qt::ALT + Qt::Key_S);
    act->setShortcutContext( Qt::ApplicationShortcut );
-   QObject::connect(act, SIGNAL(triggered()), qApp, SLOT(aboutQt()));
+   QObject::connect(act, &QAction::triggered, qApp, &QApplication::aboutQt);
 
     QWidget widget5;
     widget5.show();
diff --git a/src/widgets/doc/snippets/qlistview-dnd/mainwindow.cpp b/src/widgets/doc/snippets/qlistview-dnd/mainwindow.cpp
index c2af9c4cf1..45f1eb7aa3 100644
--- a/src/widgets/doc/snippets/qlistview-dnd/mainwindow.cpp
+++ b/src/widgets/doc/snippets/qlistview-dnd/mainwindow.cpp
@@ -73,7 +73,8 @@ listView->setDropIndicatorShown(true);
 
     this->listView = listView;
 
-    connect(quitAction, SIGNAL(triggered()), this, SLOT(close()));
+    connect(quitAction, &QAction::triggered,
+            this, &QWidget::close);
 
     setupListItems();
 
diff --git a/src/widgets/doc/snippets/qlistview-dnd/model.cpp b/src/widgets/doc/snippets/qlistview-dnd/model.cpp
index 710bbb2964..6835479e7a 100644
--- a/src/widgets/doc/snippets/qlistview-dnd/model.cpp
+++ b/src/widgets/doc/snippets/qlistview-dnd/model.cpp
@@ -54,7 +54,7 @@
   A simple model that uses a QStringList as its data source.
 */
 
-#include <QtGui>
+#include <QtWidgets>
 
 #include "model.h"
 
@@ -121,7 +121,7 @@ bool DragDropListModel::dropMimeData(const QMimeData *data,
 
 //! [6]
     insertRows(beginRow, rows, QModelIndex());
-    foreach (const QString &text, newItems) {
+    for (const QString &text : qAsConst(newItems)) {
         QModelIndex idx = index(beginRow, 0, QModelIndex());
         setData(idx, text);
         beginRow++;
@@ -146,12 +146,12 @@ Qt::ItemFlags DragDropListModel::flags(const QModelIndex &index) const
 //! [8]
 QMimeData *DragDropListModel::mimeData(const QModelIndexList &indexes) const
 {
-    QMimeData *mimeData = new QMimeData();
+    QMimeData *mimeData = new QMimeData;
     QByteArray encodedData;
 
     QDataStream stream(&encodedData, QIODevice::WriteOnly);
 
-    foreach (const QModelIndex &index, indexes) {
+    for (const QModelIndex &index : indexes) {
         if (index.isValid()) {
             QString text = data(index, Qt::DisplayRole).toString();
             stream << text;
diff --git a/src/widgets/doc/snippets/qlistwidget-dnd/mainwindow.cpp b/src/widgets/doc/snippets/qlistwidget-dnd/mainwindow.cpp
index 1153250b17..70df2b112e 100644
--- a/src/widgets/doc/snippets/qlistwidget-dnd/mainwindow.cpp
+++ b/src/widgets/doc/snippets/qlistwidget-dnd/mainwindow.cpp
@@ -48,7 +48,7 @@
 **
 ****************************************************************************/
 
-#include <QtGui>
+#include <QtWidgets>
 
 #include "mainwindow.h"
 
@@ -74,7 +74,7 @@ listWidget->setDragDropMode(QAbstractItemView::InternalMove);
 
     this->listWidget = listWidget;
 
-    connect(quitAction, SIGNAL(triggered()), this, SLOT(close()));
+    connect(quitAction, &QAction::triggered, this, &QWidget::close);
 
     setupListItems();
 
diff --git a/src/widgets/doc/snippets/qlistwidget-using/mainwindow.cpp b/src/widgets/doc/snippets/qlistwidget-using/mainwindow.cpp
index ff69fd2efd..13b20bb856 100644
--- a/src/widgets/doc/snippets/qlistwidget-using/mainwindow.cpp
+++ b/src/widgets/doc/snippets/qlistwidget-using/mainwindow.cpp
@@ -48,7 +48,7 @@
 **
 ****************************************************************************/
 
-#include <QtGui>
+#include <QtWidgets>
 
 #include "mainwindow.h"
 
@@ -77,14 +77,13 @@ MainWindow::MainWindow()
     listWidget = new QListWidget(this);
     listWidget->setSelectionMode(QAbstractItemView::SingleSelection);
 
-    connect(quitAction, SIGNAL(triggered()), this, SLOT(close()));
-    connect(ascendingAction, SIGNAL(triggered()), this, SLOT(sortAscending()));
-    connect(descendingAction, SIGNAL(triggered()), this, SLOT(sortDescending()));
-    connect(insertAction, SIGNAL(triggered()), this, SLOT(insertItem()));
-    connect(removeAction, SIGNAL(triggered()), this, SLOT(removeItem()));
-    connect(listWidget,
-            SIGNAL(currentItemChanged(QListWidgetItem*,QListWidgetItem*)),
-            this, SLOT(updateMenus(QListWidgetItem*)));
+    connect(quitAction, &QAction::triggered, this, &QWidget::close);
+    connect(ascendingAction, &QAction::triggered, this, &MainWindow::sortAscending);
+    connect(descendingAction, &QAction::triggered, this, &MainWindow::sortDescending);
+    connect(insertAction, &QAction::triggered, this, &MainWindow::insertItem);
+    connect(removeAction, &QAction::triggered, this, &MainWindow::removeItem);
+    connect(listWidget, &QListWidget::currentItemChanged,
+            this, &MainWindow::updateMenus);
 
     setupListItems();
     updateMenus(listWidget->currentItem());
diff --git a/src/widgets/doc/snippets/qsortfilterproxymodel/main.cpp b/src/widgets/doc/snippets/qsortfilterproxymodel/main.cpp
index a6284bd578..2d4b1023f1 100644
--- a/src/widgets/doc/snippets/qsortfilterproxymodel/main.cpp
+++ b/src/widgets/doc/snippets/qsortfilterproxymodel/main.cpp
@@ -48,7 +48,7 @@
 **
 ****************************************************************************/
 
-#include <QtGui>
+#include <QtWidgets>
 
 int main(int argc, char *argv[])
 {
@@ -74,9 +74,8 @@ int main(int argc, char *argv[])
     filteredView->setWindowTitle("Filtered view onto a string list model");
 
     QLineEdit *patternEditor = new QLineEdit;
-    QObject::
-    connect(patternEditor, SIGNAL(textChanged(QString)),
-            filterModel, SLOT(setFilterRegExp(QString)));
+    QObject::connect(patternEditor, &QLineEdit::textChanged,
+                     filterModel, &QSortFilterProxyModel::setFilterWildcard);
 
     QVBoxLayout *layout = new QVBoxLayout(window);
     layout->addWidget(filteredView);
diff --git a/src/widgets/doc/snippets/qstackedlayout/main.cpp b/src/widgets/doc/snippets/qstackedlayout/main.cpp
index 765608848c..9c61939dee 100644
--- a/src/widgets/doc/snippets/qstackedlayout/main.cpp
+++ b/src/widgets/doc/snippets/qstackedlayout/main.cpp
@@ -48,13 +48,12 @@
 **
 ****************************************************************************/
 
-#include <QtGui>
-#include <QApplication>
+#include <QtWidgets>
 
 class Widget : public QWidget
 {
 public:
-    Widget(QWidget *parent = 0);
+    Widget(QWidget *parent = nullptr);
 };
 
 Widget::Widget(QWidget *parent)
@@ -75,8 +74,8 @@ Widget::Widget(QWidget *parent)
     pageComboBox->addItem(tr("Page 1"));
     pageComboBox->addItem(tr("Page 2"));
     pageComboBox->addItem(tr("Page 3"));
-    connect(pageComboBox, SIGNAL(activated(int)),
-            stackedLayout, SLOT(setCurrentIndex(int)));
+    connect(pageComboBox, QOverload<int>::of(&QComboBox::activated),
+            stackedLayout, &QStackedLayout::setCurrentIndex);
 //! [1]
 
 //! [2]
diff --git a/src/widgets/doc/snippets/qstackedwidget/main.cpp b/src/widgets/doc/snippets/qstackedwidget/main.cpp
index a6c9c7afe3..077c281830 100644
--- a/src/widgets/doc/snippets/qstackedwidget/main.cpp
+++ b/src/widgets/doc/snippets/qstackedwidget/main.cpp
@@ -48,8 +48,7 @@
 **
 ****************************************************************************/
 
-#include <QtGui>
-#include <QApplication>
+#include <QtWidgets>
 
 class Widget : public QWidget
 {
@@ -75,8 +74,8 @@ Widget::Widget(QWidget *parent)
     pageComboBox->addItem(tr("Page 1"));
     pageComboBox->addItem(tr("Page 2"));
     pageComboBox->addItem(tr("Page 3"));
-    connect(pageComboBox, SIGNAL(activated(int)),
-            stackedWidget, SLOT(setCurrentIndex(int)));
+    connect(pageComboBox, QOverload<int>::of(&QComboBox::activated),
+            stackedWidget, &QStackedWidget::setCurrentIndex);
 
 //! [1] //! [2]
     QVBoxLayout *layout = new QVBoxLayout;
diff --git a/src/widgets/doc/snippets/qtablewidget-resizing/mainwindow.cpp b/src/widgets/doc/snippets/qtablewidget-resizing/mainwindow.cpp
index 95113153e1..d2c50336f6 100644
--- a/src/widgets/doc/snippets/qtablewidget-resizing/mainwindow.cpp
+++ b/src/widgets/doc/snippets/qtablewidget-resizing/mainwindow.cpp
@@ -48,7 +48,7 @@
 **
 ****************************************************************************/
 
-#include <QtGui>
+#include <QtWidgets>
 
 #include "mainwindow.h"
 
@@ -72,9 +72,9 @@ MainWindow::MainWindow()
 //! [0]
     tableWidget->setSelectionMode(QAbstractItemView::ExtendedSelection);
 
-    connect(quitAction, SIGNAL(triggered()), this, SLOT(close()));
-    connect(tableWidthAction, SIGNAL(triggered()), this, SLOT(changeWidth()));
-    connect(tableHeightAction, SIGNAL(triggered()), this, SLOT(changeHeight()));
+    connect(quitAction, &QAction::triggered, this, &QWidget::close);
+    connect(tableWidthAction, &QAction::triggered, this, &MainWindow::changeWidth);
+    connect(tableHeightAction, &QAction::triggered, this, &MainWindow::changeHeight);
 
     setupTableItems();
 
diff --git a/src/widgets/doc/snippets/qtablewidget-using/mainwindow.cpp b/src/widgets/doc/snippets/qtablewidget-using/mainwindow.cpp
index 15b9457dd5..47b63b2b3f 100644
--- a/src/widgets/doc/snippets/qtablewidget-using/mainwindow.cpp
+++ b/src/widgets/doc/snippets/qtablewidget-using/mainwindow.cpp
@@ -48,8 +48,8 @@
 **
 ****************************************************************************/
 
-#include <QtGui>
-#include "math.h"
+#include <QtWidgets>
+#include <math.h>
 
 #include "mainwindow.h"
 
@@ -89,9 +89,9 @@ MainWindow::MainWindow()
     tableWidget->setHorizontalHeaderItem(1, squaresHeaderItem);
     tableWidget->setHorizontalHeaderItem(2, cubesHeaderItem);
 
-    connect(quitAction, SIGNAL(triggered()), this, SLOT(close()));
-    connect(sumItemsAction, SIGNAL(triggered()), this, SLOT(sumItems()));
-    connect(averageItemsAction, SIGNAL(triggered()), this, SLOT(averageItems()));
+    connect(quitAction, &QAction::triggered, this, &QWidget::close);
+    connect(sumItemsAction, &QAction::triggered, this, &MainWindow::sumItems);
+    connect(averageItemsAction, &QAction::triggered, this, &MainWindow::averageItems);
 
     setupTableItems();
 
@@ -119,12 +119,11 @@ void MainWindow::setupTableItems()
 
 void MainWindow::averageItems()
 {
-    QList<QTableWidgetItem *> selected = tableWidget->selectedItems();
-    QTableWidgetItem *item;
+    const QList<QTableWidgetItem *> selected = tableWidget->selectedItems();
     int number = 0;
     double total = 0;
 
-    foreach (item, selected) {
+    for (QTableWidgetItem *item : selected) {
         bool ok;
         double value = item->text().toDouble(&ok);
 
@@ -140,12 +139,11 @@ void MainWindow::averageItems()
 void MainWindow::sumItems()
 {
 //! [4]
-    QList<QTableWidgetItem *> selected = tableWidget->selectedItems();
-    QTableWidgetItem *item;
+    const QList<QTableWidgetItem *> selected = tableWidget->selectedItems();
     int number = 0;
     double total = 0;
 
-    foreach (item, selected) {
+    for (QTableWidgetItem *item : selected) {
         bool ok;
         double value = item->text().toDouble(&ok);
 
diff --git a/src/widgets/doc/snippets/qtreewidget-using/mainwindow.cpp b/src/widgets/doc/snippets/qtreewidget-using/mainwindow.cpp
index ee7e028a13..b9e258cb03 100644
--- a/src/widgets/doc/snippets/qtreewidget-using/mainwindow.cpp
+++ b/src/widgets/doc/snippets/qtreewidget-using/mainwindow.cpp
@@ -48,7 +48,7 @@
 **
 ****************************************************************************/
 
-#include <QtGui>
+#include <QtWidgets>
 
 #include "mainwindow.h"
 
@@ -90,16 +90,15 @@ MainWindow::MainWindow()
     treeWidget->setHeaderLabels(headers);
 //! [2]
 
-    connect(quitAction, SIGNAL(triggered()), this, SLOT(close()));
-    connect(ascendingAction, SIGNAL(triggered()), this, SLOT(sortAscending()));
-    connect(autoSortAction, SIGNAL(triggered()), this, SLOT(updateSortItems()));
-    connect(descendingAction, SIGNAL(triggered()), this, SLOT(sortDescending()));
-    connect(findItemsAction, SIGNAL(triggered()), this, SLOT(findItems()));
-    connect(insertAction, SIGNAL(triggered()), this, SLOT(insertItem()));
-    connect(removeAction, SIGNAL(triggered()), this, SLOT(removeItem()));
-    connect(treeWidget,
-            SIGNAL(currentItemChanged(QTreeWidgetItem*,QTreeWidgetItem*)),
-            this, SLOT(updateMenus(QTreeWidgetItem*)));
+    connect(quitAction, &QAction::triggered, this, &QWidget::close);
+    connect(ascendingAction, &QAction::triggered, this, &MainWindow::sortAscending);
+    connect(autoSortAction, &QAction::triggered, this, &MainWindow::updateSortItems);
+    connect(descendingAction, &QAction::triggered, this, &MainWindow::sortDescending);
+    connect(findItemsAction, &QAction::triggered, this, &MainWindow::findItems);
+    connect(insertAction, &QAction::triggered, this, &MainWindow::insertItem);
+    connect(removeAction, &QAction::triggered, this, &MainWindow::removeItem);
+    connect(treeWidget, &QTreeWidget::currentItemChanged,
+            this, &MainWindow::updateMenus);
 
     setupTreeItems();
     updateMenus(treeWidget->currentItem());
@@ -150,18 +149,16 @@ void MainWindow::findItems()
     if (itemText.isEmpty())
         return;
 
-//! [6]
-    QTreeWidgetItem *item;
-//! [6]
-    foreach (item, treeWidget->selectedItems())
-        treeWidget->setItemSelected(item, false);
+    const QList<QTreeWidgetItem *> items = treeWidget->selectedItems();
+    for (QTreeWidgetItem *item : items)
+        item->setSelected(false);
 
 //! [7]
-    QList<QTreeWidgetItem *> found = treeWidget->findItems(
+    const QList<QTreeWidgetItem *> found = treeWidget->findItems(
         itemText, Qt::MatchWildcard);
 
-    foreach (item, found) {
-        treeWidget->setItemSelected(item, true);
+    for (QTreeWidgetItem *item : found) {
+        item->setSelected(true);
         // Show the item->text(0) for each item.
     }
 //! [7]
diff --git a/src/widgets/doc/snippets/qtreewidgetitemiterator-using/mainwindow.cpp b/src/widgets/doc/snippets/qtreewidgetitemiterator-using/mainwindow.cpp
index 5f1f606185..bfe099bbb4 100644
--- a/src/widgets/doc/snippets/qtreewidgetitemiterator-using/mainwindow.cpp
+++ b/src/widgets/doc/snippets/qtreewidgetitemiterator-using/mainwindow.cpp
@@ -48,7 +48,7 @@
 **
 ****************************************************************************/
 
-#include <QtGui>
+#include <QtWidgets>
 
 #include "mainwindow.h"
 
@@ -85,16 +85,15 @@ MainWindow::MainWindow()
     headers << tr("Subject") << tr("Default");
     treeWidget->setHeaderLabels(headers);
 
-    connect(quitAction, SIGNAL(triggered()), this, SLOT(close()));
-    connect(ascendingAction, SIGNAL(triggered()), this, SLOT(sortAscending()));
-    connect(autoSortAction, SIGNAL(triggered()), this, SLOT(updateSortItems()));
-    connect(descendingAction, SIGNAL(triggered()), this, SLOT(sortDescending()));
-    connect(findItemsAction, SIGNAL(triggered()), this, SLOT(findItems()));
-    connect(insertAction, SIGNAL(triggered()), this, SLOT(insertItem()));
-    connect(removeAction, SIGNAL(triggered()), this, SLOT(removeItem()));
-    connect(treeWidget,
-            SIGNAL(currentItemChanged(QTreeWidgetItem*,QTreeWidgetItem*)),
-            this, SLOT(updateMenus(QTreeWidgetItem*)));
+    connect(quitAction, &QAction::triggered, this, &QWidget::close);
+    connect(ascendingAction, &QAction::triggered, this, &MainWindow::sortAscending);
+    connect(autoSortAction, &QAction::triggered, this, &MainWindow::updateSortItems);
+    connect(descendingAction, &QAction::triggered, this, &MainWindow::sortDescending);
+    connect(findItemsAction, &QAction::triggered, this, &MainWindow::findItems);
+    connect(insertAction, &QAction::triggered, this, &MainWindow::insertItem);
+    connect(removeAction, &QAction::triggered, this, &MainWindow::removeItem);
+    connect(treeWidget, &QTreeWidget::currentItemChanged,
+            this, &MainWindow::updateMenus);
 
     setupTreeItems();
     updateMenus(treeWidget->currentItem());
diff --git a/src/widgets/doc/snippets/reading-selections/window.cpp b/src/widgets/doc/snippets/reading-selections/window.cpp
index 08805fe4b3..045d66a199 100644
--- a/src/widgets/doc/snippets/reading-selections/window.cpp
+++ b/src/widgets/doc/snippets/reading-selections/window.cpp
@@ -81,9 +81,9 @@ MainWindow::MainWindow(QWidget *parent)
     QAction *selectAllAction = actionMenu->addAction(tr("&Select All"));
     menuBar()->addMenu(actionMenu);
 
-    connect(fillAction, SIGNAL(triggered()), this, SLOT(fillSelection()));
-    connect(clearAction, SIGNAL(triggered()), this, SLOT(clearSelection()));
-    connect(selectAllAction, SIGNAL(triggered()), this, SLOT(selectAll()));
+    connect(fillAction, &QAction::triggered, this, &MainWindow::fillSelection);
+    connect(clearAction, &QAction::triggered, this, &MainWindow::clearSelection);
+    connect(selectAllAction, &QAction::triggered, this, &MainWindow::selectAll);
 
     selectionModel = table->selectionModel();
 
@@ -94,10 +94,9 @@ MainWindow::MainWindow(QWidget *parent)
 void MainWindow::fillSelection()
 {
 //! [0]
-    QModelIndexList indexes = selectionModel->selectedIndexes();
-    QModelIndex index;
+    const QModelIndexList indexes = selectionModel->selectedIndexes();
 
-    foreach(index, indexes) {
+    for (const QModelIndex &index : indexes) {
         QString text = QString("(%1,%2)").arg(index.row()).arg(index.column());
         model->setData(index, text);
     }
@@ -106,11 +105,10 @@ void MainWindow::fillSelection()
 
 void MainWindow::clearSelection()
 {
-    QModelIndexList indexes = selectionModel->selectedIndexes();
-    QModelIndex index;
+    const QModelIndexList indexes = selectionModel->selectedIndexes();
 
-    foreach(index, indexes)
-        model->setData(index, "");
+    for (const QModelIndex &index : indexes)
+        model->setData(index, QString());
 }
 
 void MainWindow::selectAll()
diff --git a/src/widgets/doc/snippets/timeline/main.cpp b/src/widgets/doc/snippets/timeline/main.cpp
index 74aa749254..4dfa2400d0 100644
--- a/src/widgets/doc/snippets/timeline/main.cpp
+++ b/src/widgets/doc/snippets/timeline/main.cpp
@@ -48,7 +48,7 @@
 **
 ****************************************************************************/
 
-#include <QtGui>
+#include <QtWidgets>
 #include <math.h>
 
 int main(int argv, char *args[])
@@ -68,7 +68,7 @@ int main(int argv, char *args[])
     for (int i = 0; i < 200; ++i)
         animation->setPosAt(i / 200.0, QPointF(i, i));
 
-    QGraphicsScene *scene = new QGraphicsScene();
+    QGraphicsScene *scene = new QGraphicsScene;
     scene->setSceneRect(0, 0, 250, 250);
     scene->addItem(ball);
 
diff --git a/src/widgets/doc/snippets/updating-selections/window.cpp b/src/widgets/doc/snippets/updating-selections/window.cpp
index 0bdcf8a64d..26e9b56ae4 100644
--- a/src/widgets/doc/snippets/updating-selections/window.cpp
+++ b/src/widgets/doc/snippets/updating-selections/window.cpp
@@ -74,12 +74,10 @@ MainWindow::MainWindow(QWidget *parent)
     table->setModel(model);
 
     selectionModel = table->selectionModel();
-    connect(selectionModel,
-        SIGNAL(selectionChanged(QItemSelection,QItemSelection)),
-        this, SLOT(updateSelection(QItemSelection,QItemSelection)));
-    connect(selectionModel,
-        SIGNAL(currentChanged(QModelIndex,QModelIndex)),
-        this, SLOT(changeCurrent(QModelIndex,QModelIndex)));
+    connect(selectionModel, &QItemSelectionModel::selectionChanged,
+            this, &MainWindow::updateSelection);
+    connect(selectionModel, &QItemSelectionModel::currentChanged,
+            this, &MainWindow::changeCurrent);
 
     statusBar();
     setCentralWidget(table);
@@ -89,10 +87,9 @@ MainWindow::MainWindow(QWidget *parent)
 void MainWindow::updateSelection(const QItemSelection &selected,
     const QItemSelection &deselected)
 {
-    QModelIndex index;
     QModelIndexList items = selected.indexes();
 
-    foreach (index, items) {
+    for (const QModelIndex &index : qAsConst(items)) {
         QString text = QString("(%1,%2)").arg(index.row()).arg(index.column());
         model->setData(index, text);
 //! [0] //! [1]
@@ -102,8 +99,8 @@ void MainWindow::updateSelection(const QItemSelection &selected,
 //! [2]
     items = deselected.indexes();
 
-    foreach (index, items)
-        model->setData(index, "");
+    for (const QModelIndex &index : qAsConst(items)) {
+        model->setData(index, QString());
 }
 //! [2]
 
diff --git a/src/widgets/doc/src/model-view-programming.qdoc b/src/widgets/doc/src/model-view-programming.qdoc
index f6b7c80656..9335ff78c9 100644
--- a/src/widgets/doc/src/model-view-programming.qdoc
+++ b/src/widgets/doc/src/model-view-programming.qdoc
@@ -693,9 +693,9 @@
     \l QAbstractItemDelegate class.
 
     Delegates are expected to be able to render their contents themselves
-    by implementing the \l{QItemDelegate::paint()}{paint()}
-    and \l{QItemDelegate::sizeHint()}{sizeHint()} functions.
-    However, simple widget-based delegates can subclass \l QItemDelegate
+    by implementing the \l{QStyledItemDelegate::paint()}{paint()}
+    and \l{QStyledItemDelegate::sizeHint()}{sizeHint()} functions.
+    However, simple widget-based delegates can subclass \l QStyledItemDelegate
     instead of \l QAbstractItemDelegate, and take advantage of the default
     implementations of these functions.
 
@@ -709,14 +709,14 @@
 
     \section2 Using an existing delegate
 
-    The standard views provided with Qt use instances of \l QItemDelegate
+    The standard views provided with Qt use instances of \l QStyledItemDelegate
     to provide editing facilities. This default implementation of the
     delegate interface renders items in the usual style for each of the
     standard views: \l QListView, \l QTableView, and \l QTreeView.
 
     All the standard roles are handled by the default delegate used by
     the standard views. The way these are interpreted is described in the
-    QItemDelegate documentation.
+    QStyledItemDelegate documentation.
 
     The delegate used by a view is returned by the
     \l{QAbstractItemView::itemDelegate()}{itemDelegate()} function.
@@ -799,7 +799,7 @@
     In this case, we ensure that the spin box is up-to-date, and update
     the model with the value it contains using the index specified.
 
-    The standard \l QItemDelegate class informs the view when it has
+    The standard \l QStyledItemDelegate class informs the view when it has
     finished editing by emitting the
     \l{QAbstractItemDelegate::closeEditor()}{closeEditor()} signal.
     The view ensures that the editor widget is closed and destroyed. In
@@ -838,11 +838,11 @@
     assist any subsequent editing operations. This is achieved by
     emitting the \l{QAbstractItemDelegate::closeEditor()}{closeEditor()}
     signal with a suitable hint. This is taken care of by the default
-    QItemDelegate event filter which we installed on the spin box when
+    QStyledItemDelegate event filter which we installed on the spin box when
     it was constructed.
 
     The behavior of the spin box could be adjusted to make it more user
-    friendly. In the default event filter supplied by QItemDelegate, if
+    friendly. In the default event filter supplied by QStyledItemDelegate, if
     the user hits \uicontrol Return to confirm their choice in the spin box,
     the delegate commits the value to the model and closes the spin box.
     We can change this behavior by installing our own event filter on the
@@ -1003,8 +1003,8 @@
 
     \snippet reading-selections/window.cpp 0
 
-    The above code uses Qt's convenient \l{Container Classes}{foreach
-    keyword} to iterate over, and modify, the items corresponding to the
+    The above code uses a range-based for-loop to iterate over,
+    and modify, the items corresponding to the
     indexes returned by the selection model.
 
     The selection model emits signals to indicate changes in the
@@ -1611,7 +1611,6 @@
     We can obtain a list of matching items with the \c findItems()
     function:
 
-    \snippet qtreewidget-using/mainwindow.cpp 6
     \snippet qtreewidget-using/mainwindow.cpp 7
 
     The above code causes items in a tree widget to be selected if they
diff --git a/src/widgets/doc/src/widgets-and-layouts/styles.qdoc b/src/widgets/doc/src/widgets-and-layouts/styles.qdoc
index a9d95bc02c..645da5bca2 100644
--- a/src/widgets/doc/src/widgets-and-layouts/styles.qdoc
+++ b/src/widgets/doc/src/widgets-and-layouts/styles.qdoc
@@ -286,7 +286,7 @@
     QStyleOption to a subclass (e.g., QStyleOptionFocusRect). For
     safety, you can use qstyleoption_cast() to ensure that the
     pointer type is correct. If the object isn't of the right type,
-    qstyleoption_cast() returns 0. For example:
+    qstyleoption_cast() returns \nullptr. For example:
 
     \snippet code/doc_src_qt4-styles.cpp 0
 
diff --git a/src/widgets/doc/src/widgets-and-layouts/stylesheet.qdoc b/src/widgets/doc/src/widgets-and-layouts/stylesheet.qdoc
index 623d770f2f..00323eace6 100644
--- a/src/widgets/doc/src/widgets-and-layouts/stylesheet.qdoc
+++ b/src/widgets/doc/src/widgets-and-layouts/stylesheet.qdoc
@@ -520,7 +520,7 @@
     user had manually called the corresponding QWidget::setPalette() and
     QWidget::setFont() methods on all of the QWidgets targeted by the style
     sheet.  If this would have caused propagation in C++, it will cause
-    propagation in style sheets and visa versa.
+    propagation in style sheets and vice versa.
 
     \section1 Widgets Inside C++ Namespaces