1 files changed, 37 insertions, 54 deletions

diff --git a/src/widgets/doc/snippets/dialogs/dialogs.cpp b/src/widgets/doc/snippets/dialogs/dialogs.cpp
index cca3ac8d75..0990d7d7c4 100644
--- a/src/widgets/doc/snippets/dialogs/dialogs.cpp
+++ b/src/widgets/doc/snippets/dialogs/dialogs.cpp
@@ -1,54 +1,7 @@
-/****************************************************************************
-**
-** 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."
-**
-** $QT_END_LICENSE$
-**
-****************************************************************************/
-
-#include <QtGui>
+// Copyright (C) 2016 The Qt Company Ltd.
+// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
+
+#include <QtWidgets>
 
 typedef QDialog WordCountDialog;
 typedef QDialog FindDialog;
@@ -76,7 +29,8 @@ 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 +203,9 @@ 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]
@@ -273,6 +227,35 @@ void Operation::cancel()
 }
 //! [6]
 
+void extension()
+{
+    using ExtendedControls = QWidget;
+    QPushButton *findButton;
+    QPushButton *moreButton;
+    QWidget *extension;
+    QVBoxLayout *mainLayout;
+
+//! [extension]
+    mainLayout->setSizeConstraint(QLayout::SetFixedSize);
+
+    findButton = new QPushButton(tr("&Find"));
+    moreButton = new QPushButton(tr("&More..."));
+    moreButton->setCheckable(true);
+
+    extension = new ExtendedControls;
+    mainLayout->addWidget(extension);
+    extension->hide();
+
+    connect(moreButton, &QAbstractButton::toggled, extension, &QWidget::setVisible);
+//! [extension]
+
+//! [buttonbox]
+    QDialogButtonBox *buttonBox = new QDialogButtonBox(Qt::Vertical);
+    buttonBox->addButton(findButton, QDialogButtonBox::ActionRole);
+    buttonBox->addButton(moreButton, QDialogButtonBox::ActionRole);
+//! [buttonbox]
+}
+
 int main()
 {
 }