diff -r dee5afe5301f -r 3f74d0d4af4c doc/src/snippets/dockwidgets/mainwindow.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/doc/src/snippets/dockwidgets/mainwindow.cpp	Thu Apr 08 14:19:33 2010 +0300
@@ -0,0 +1,123 @@
+/****************************************************************************
+**
+** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the documentation of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include <QtGui>
+
+#include "mainwindow.h"
+
+MainWindow::MainWindow(QWidget *parent)
+    : QMainWindow(parent)
+{
+    setWindowTitle("Dock Widgets");
+
+    setupDockWindow();
+    setupContents();
+    setupMenus();
+
+    textBrowser = new QTextBrowser(this);
+
+    connect(headingList, SIGNAL(itemClicked(QListWidgetItem *)),
+            this, SLOT(updateText(QListWidgetItem *)));
+
+    updateText(headingList->item(0));
+    headingList->setCurrentRow(0);
+    setCentralWidget(textBrowser);
+}
+
+void MainWindow::setupContents()
+{
+    QFile titlesFile(":/Resources/titles.txt");
+    titlesFile.open(QFile::ReadOnly);
+    int chapter = 0;
+
+    do {
+        QString line = titlesFile.readLine().trimmed();
+        QStringList parts = line.split("\t", QString::SkipEmptyParts);
+        if (parts.size() != 2)
+            break;
+
+        QString chapterTitle = parts[0];
+        QString fileName = parts[1];
+
+        QFile chapterFile(fileName);
+
+        chapterFile.open(QFile::ReadOnly);
+        QListWidgetItem *item = new QListWidgetItem(chapterTitle, headingList);
+        item->setData(Qt::DisplayRole, chapterTitle);
+        item->setData(Qt::UserRole, chapterFile.readAll());
+        item->setFlags(Qt::ItemIsEnabled | Qt::ItemIsSelectable);
+        chapterFile.close();
+
+        chapter++;
+    } while (titlesFile.isOpen());
+
+    titlesFile.close();
+}
+
+void MainWindow::setupDockWindow()
+{
+//! [0]
+    contentsWindow = new QDockWidget(tr("Table of Contents"), this);
+    contentsWindow->setAllowedAreas(Qt::LeftDockWidgetArea
+                                  | Qt::RightDockWidgetArea);
+    addDockWidget(Qt::LeftDockWidgetArea, contentsWindow);
+
+    headingList = new QListWidget(contentsWindow);
+    contentsWindow->setWidget(headingList);
+//! [0]
+}
+
+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()));
+
+    QMenu *fileMenu = menuBar()->addMenu(tr("&File"));
+    fileMenu->addAction(exitAct);
+}
+
+void MainWindow::updateText(QListWidgetItem *item)
+{
+    QString text = item->data(Qt::UserRole).toString();
+    textBrowser->setHtml(text);
+}