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diff --git a/demos/mainwindow/mainwindow.cpp b/demos/mainwindow/mainwindow.cpp
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+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Qt Software Information (qt-info@nokia.com)
+**
+** This file is part of the demonstration applications 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 either Technology Preview License Agreement or the
+** Beta Release License Agreement.
+**
+** 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 1.0, included in the file LGPL_EXCEPTION.txt in this
+** package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3.0 as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU General Public License version 3.0 requirements will be
+** met: http://www.gnu.org/copyleft/gpl.html.
+**
+** If you are unsure which license is appropriate for your use, please
+** contact the sales department at qt-sales@nokia.com.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "mainwindow.h"
+#include "colorswatch.h"
+#include "toolbar.h"
+
+#include <QAction>
+#include <QLayout>
+#include <QMenu>
+#include <QMenuBar>
+#include <QStatusBar>
+#include <QTextEdit>
+#include <QFile>
+#include <QDataStream>
+#include <QFileDialog>
+#include <QMessageBox>
+#include <QSignalMapper>
+#include <QApplication>
+#include <QPainter>
+#include <QMouseEvent>
+#include <QLineEdit>
+#include <QComboBox>
+#include <QLabel>
+#include <QPushButton>
+#include <qdebug.h>
+
+static const char * const message =
+    "<p><b>Qt Main Window Demo</b></p>"
+
+    "<p>This is a demonstration of the QMainWindow, QToolBar and "
+    "QDockWidget classes.</p>"
+
+    "<p>The tool bar and dock widgets can be dragged around and rearranged "
+    "using the mouse or via the menu.</p>"
+
+    "<p>Each dock widget contains a colored frame and a context "
+    "(right-click) menu.</p>"
+
+#ifdef Q_WS_MAC
+    "<p>On Mac OS X, the \"Black\" dock widget has been created as a "
+    "<em>Drawer</em>, which is a special kind of QDockWidget.</p>"
+#endif
+    ;
+
+MainWindow::MainWindow(const QMap<QString, QSize> &customSizeHints,
+                        QWidget *parent, Qt::WindowFlags flags)
+    : QMainWindow(parent, flags)
+{
+    setObjectName("MainWindow");
+    setWindowTitle("Qt Main Window Demo");
+
+    center = new QTextEdit(this);
+    center->setReadOnly(true);
+    center->setMinimumSize(400, 205);
+    setCentralWidget(center);
+
+    setupToolBar();
+    setupMenuBar();
+    setupDockWidgets(customSizeHints);
+
+    statusBar()->showMessage(tr("Status Bar"));
+}
+
+void MainWindow::actionTriggered(QAction *action)
+{
+    qDebug("action '%s' triggered", action->text().toLocal8Bit().data());
+}
+
+void MainWindow::setupToolBar()
+{
+    for (int i = 0; i < 3; ++i) {
+        ToolBar *tb = new ToolBar(QString::fromLatin1("Tool Bar %1").arg(i + 1), this);
+        toolBars.append(tb);
+        addToolBar(tb);
+    }
+}
+
+void MainWindow::setupMenuBar()
+{
+    QMenu *menu = menuBar()->addMenu(tr("&File"));
+
+    QAction *action = menu->addAction(tr("Save layout..."));
+    connect(action, SIGNAL(triggered()), this, SLOT(saveLayout()));
+
+    action = menu->addAction(tr("Load layout..."));
+    connect(action, SIGNAL(triggered()), this, SLOT(loadLayout()));
+
+    action = menu->addAction(tr("Switch layout direction"));
+    connect(action, SIGNAL(triggered()), this, SLOT(switchLayoutDirection()));
+
+    menu->addSeparator();
+
+    menu->addAction(tr("&Quit"), this, SLOT(close()));
+
+    mainWindowMenu = menuBar()->addMenu(tr("Main window"));
+
+    action = mainWindowMenu->addAction(tr("Animated docks"));
+    action->setCheckable(true);
+    action->setChecked(dockOptions() & AnimatedDocks);
+    connect(action, SIGNAL(toggled(bool)), this, SLOT(setDockOptions()));
+
+    action = mainWindowMenu->addAction(tr("Allow nested docks"));
+    action->setCheckable(true);
+    action->setChecked(dockOptions() & AllowNestedDocks);
+    connect(action, SIGNAL(toggled(bool)), this, SLOT(setDockOptions()));
+
+    action = mainWindowMenu->addAction(tr("Allow tabbed docks"));
+    action->setCheckable(true);
+    action->setChecked(dockOptions() & AllowTabbedDocks);
+    connect(action, SIGNAL(toggled(bool)), this, SLOT(setDockOptions()));
+
+    action = mainWindowMenu->addAction(tr("Force tabbed docks"));
+    action->setCheckable(true);
+    action->setChecked(dockOptions() & ForceTabbedDocks);
+    connect(action, SIGNAL(toggled(bool)), this, SLOT(setDockOptions()));
+
+    action = mainWindowMenu->addAction(tr("Vertical tabs"));
+    action->setCheckable(true);
+    action->setChecked(dockOptions() & VerticalTabs);
+    connect(action, SIGNAL(toggled(bool)), this, SLOT(setDockOptions()));
+
+    QMenu *toolBarMenu = menuBar()->addMenu(tr("Tool bars"));
+    for (int i = 0; i < toolBars.count(); ++i)
+        toolBarMenu->addMenu(toolBars.at(i)->menu);
+
+    dockWidgetMenu = menuBar()->addMenu(tr("&Dock Widgets"));
+}
+
+void MainWindow::setDockOptions()
+{
+    DockOptions opts;
+    QList<QAction*> actions = mainWindowMenu->actions();
+
+    if (actions.at(0)->isChecked())
+        opts |= AnimatedDocks;
+    if (actions.at(1)->isChecked())
+        opts |= AllowNestedDocks;
+    if (actions.at(2)->isChecked())
+        opts |= AllowTabbedDocks;
+    if (actions.at(3)->isChecked())
+        opts |= ForceTabbedDocks;
+    if (actions.at(4)->isChecked())
+        opts |= VerticalTabs;
+
+    QMainWindow::setDockOptions(opts);
+}
+
+void MainWindow::saveLayout()
+{
+    QString fileName
+        = QFileDialog::getSaveFileName(this, tr("Save layout"));
+    if (fileName.isEmpty())
+        return;
+    QFile file(fileName);
+    if (!file.open(QFile::WriteOnly)) {
+        QString msg = tr("Failed to open %1\n%2")
+                        .arg(fileName)
+                        .arg(file.errorString());
+        QMessageBox::warning(this, tr("Error"), msg);
+        return;
+    }
+
+    QByteArray geo_data = saveGeometry();
+    QByteArray layout_data = saveState();
+
+    bool ok = file.putChar((uchar)geo_data.size());
+    if (ok)
+        ok = file.write(geo_data) == geo_data.size();
+    if (ok)
+        ok = file.write(layout_data) == layout_data.size();
+
+    if (!ok) {
+        QString msg = tr("Error writing to %1\n%2")
+                        .arg(fileName)
+                        .arg(file.errorString());
+        QMessageBox::warning(this, tr("Error"), msg);
+        return;
+    }
+}
+
+void MainWindow::loadLayout()
+{
+    QString fileName
+        = QFileDialog::getOpenFileName(this, tr("Load layout"));
+    if (fileName.isEmpty())
+        return;
+    QFile file(fileName);
+    if (!file.open(QFile::ReadOnly)) {
+        QString msg = tr("Failed to open %1\n%2")
+                        .arg(fileName)
+                        .arg(file.errorString());
+        QMessageBox::warning(this, tr("Error"), msg);
+        return;
+    }
+
+    uchar geo_size;
+    QByteArray geo_data;
+    QByteArray layout_data;
+
+    bool ok = file.getChar((char*)&geo_size);
+    if (ok) {
+        geo_data = file.read(geo_size);
+        ok = geo_data.size() == geo_size;
+    }
+    if (ok) {
+        layout_data = file.readAll();
+        ok = layout_data.size() > 0;
+    }
+
+    if (ok)
+        ok = restoreGeometry(geo_data);
+    if (ok)
+        ok = restoreState(layout_data);
+
+    if (!ok) {
+        QString msg = tr("Error reading %1")
+                        .arg(fileName);
+        QMessageBox::warning(this, tr("Error"), msg);
+        return;
+    }
+}
+
+QAction *addAction(QMenu *menu, const QString &text, QActionGroup *group, QSignalMapper *mapper,
+                    int id)
+{
+    bool first = group->actions().isEmpty();
+    QAction *result = menu->addAction(text);
+    result->setCheckable(true);
+    result->setChecked(first);
+    group->addAction(result);
+    QObject::connect(result, SIGNAL(triggered()), mapper, SLOT(map()));
+    mapper->setMapping(result, id);
+    return result;
+}
+
+void MainWindow::setupDockWidgets(const QMap<QString, QSize> &customSizeHints)
+{
+    mapper = new QSignalMapper(this);
+    connect(mapper, SIGNAL(mapped(int)), this, SLOT(setCorner(int)));
+
+    QMenu *corner_menu = dockWidgetMenu->addMenu(tr("Top left corner"));
+    QActionGroup *group = new QActionGroup(this);
+    group->setExclusive(true);
+    ::addAction(corner_menu, tr("Top dock area"), group, mapper, 0);
+    ::addAction(corner_menu, tr("Left dock area"), group, mapper, 1);
+
+    corner_menu = dockWidgetMenu->addMenu(tr("Top right corner"));
+    group = new QActionGroup(this);
+    group->setExclusive(true);
+    ::addAction(corner_menu, tr("Top dock area"), group, mapper, 2);
+    ::addAction(corner_menu, tr("Right dock area"), group, mapper, 3);
+
+    corner_menu = dockWidgetMenu->addMenu(tr("Bottom left corner"));
+    group = new QActionGroup(this);
+    group->setExclusive(true);
+    ::addAction(corner_menu, tr("Bottom dock area"), group, mapper, 4);
+    ::addAction(corner_menu, tr("Left dock area"), group, mapper, 5);
+
+    corner_menu = dockWidgetMenu->addMenu(tr("Bottom right corner"));
+    group = new QActionGroup(this);
+    group->setExclusive(true);
+    ::addAction(corner_menu, tr("Bottom dock area"), group, mapper, 6);
+    ::addAction(corner_menu, tr("Right dock area"), group, mapper, 7);
+
+    dockWidgetMenu->addSeparator();
+
+    static const struct Set {
+        const char * name;
+        uint flags;
+        Qt::DockWidgetArea area;
+    } sets [] = {
+#ifndef Q_WS_MAC
+        { "Black", 0, Qt::LeftDockWidgetArea },
+#else
+        { "Black", Qt::Drawer, Qt::LeftDockWidgetArea },
+#endif
+        { "White", 0, Qt::RightDockWidgetArea },
+        { "Red", 0, Qt::TopDockWidgetArea },
+        { "Green", 0, Qt::TopDockWidgetArea },
+        { "Blue", 0, Qt::BottomDockWidgetArea },
+        { "Yellow", 0, Qt::BottomDockWidgetArea }
+    };
+    const int setCount = sizeof(sets) / sizeof(Set);
+
+    for (int i = 0; i < setCount; ++i) {
+        ColorSwatch *swatch = new ColorSwatch(tr(sets[i].name), this, Qt::WindowFlags(sets[i].flags));
+        if (i%2)
+            swatch->setWindowIcon(QIcon(QPixmap(":/res/qt.png")));
+        if (qstrcmp(sets[i].name, "Blue") == 0) {
+            BlueTitleBar *titlebar = new BlueTitleBar(swatch);
+            swatch->setTitleBarWidget(titlebar);
+            connect(swatch, SIGNAL(topLevelChanged(bool)), titlebar, SLOT(updateMask()));
+            connect(swatch, SIGNAL(featuresChanged(QDockWidget::DockWidgetFeatures)), titlebar, SLOT(updateMask()));
+
+#ifdef Q_WS_QWS
+            QPalette pal = palette();
+            pal.setBrush(backgroundRole(), QColor(0,0,0,0));
+            swatch->setPalette(pal);
+#endif
+        }
+
+        QString name = QString::fromLatin1(sets[i].name);
+        if (customSizeHints.contains(name))
+            swatch->setCustomSizeHint(customSizeHints.value(name));
+
+        addDockWidget(sets[i].area, swatch);
+        dockWidgetMenu->addMenu(swatch->menu);
+    }
+
+    createDockWidgetAction = new QAction(tr("Add dock widget..."), this);
+    connect(createDockWidgetAction, SIGNAL(triggered()), this, SLOT(createDockWidget()));
+    destroyDockWidgetMenu = new QMenu(tr("Destroy dock widget"), this);
+    destroyDockWidgetMenu->setEnabled(false);
+    connect(destroyDockWidgetMenu, SIGNAL(triggered(QAction*)), this, SLOT(destroyDockWidget(QAction*)));
+
+    dockWidgetMenu->addSeparator();
+    dockWidgetMenu->addAction(createDockWidgetAction);
+    dockWidgetMenu->addMenu(destroyDockWidgetMenu);
+}
+
+void MainWindow::setCorner(int id)
+{
+    switch (id) {
+        case 0:
+            QMainWindow::setCorner(Qt::TopLeftCorner, Qt::TopDockWidgetArea);
+            break;
+        case 1:
+            QMainWindow::setCorner(Qt::TopLeftCorner, Qt::LeftDockWidgetArea);
+            break;
+        case 2:
+            QMainWindow::setCorner(Qt::TopRightCorner, Qt::TopDockWidgetArea);
+            break;
+        case 3:
+            QMainWindow::setCorner(Qt::TopRightCorner, Qt::RightDockWidgetArea);
+            break;
+        case 4:
+            QMainWindow::setCorner(Qt::BottomLeftCorner, Qt::BottomDockWidgetArea);
+            break;
+        case 5:
+            QMainWindow::setCorner(Qt::BottomLeftCorner, Qt::LeftDockWidgetArea);
+            break;
+        case 6:
+            QMainWindow::setCorner(Qt::BottomRightCorner, Qt::BottomDockWidgetArea);
+            break;
+        case 7:
+            QMainWindow::setCorner(Qt::BottomRightCorner, Qt::RightDockWidgetArea);
+            break;
+    }
+}
+
+void MainWindow::showEvent(QShowEvent *event)
+{
+    QMainWindow::showEvent(event);
+}
+
+void MainWindow::switchLayoutDirection()
+{
+    if (layoutDirection() == Qt::LeftToRight)
+        qApp->setLayoutDirection(Qt::RightToLeft);
+    else
+        qApp->setLayoutDirection(Qt::LeftToRight);
+}
+
+class CreateDockWidgetDialog : public QDialog
+{
+public:
+    CreateDockWidgetDialog(QWidget *parent = 0);
+
+    QString objectName() const;
+    Qt::DockWidgetArea location() const;
+
+private:
+    QLineEdit *m_objectName;
+    QComboBox *m_location;
+};
+
+CreateDockWidgetDialog::CreateDockWidgetDialog(QWidget *parent)
+    : QDialog(parent)
+{
+    QGridLayout *layout = new QGridLayout(this);
+
+    layout->addWidget(new QLabel(tr("Object name:")), 0, 0);
+    m_objectName = new QLineEdit;
+    layout->addWidget(m_objectName, 0, 1);
+
+    layout->addWidget(new QLabel(tr("Location:")), 1, 0);
+    m_location = new QComboBox;
+    m_location->setEditable(false);
+    m_location->addItem(tr("Top"));
+    m_location->addItem(tr("Left"));
+    m_location->addItem(tr("Right"));
+    m_location->addItem(tr("Bottom"));
+    m_location->addItem(tr("Restore"));
+    layout->addWidget(m_location, 1, 1);
+
+    QHBoxLayout *buttonLayout = new QHBoxLayout;
+    layout->addLayout(buttonLayout, 2, 0, 1, 2);
+    buttonLayout->addStretch();
+
+    QPushButton *cancelButton = new QPushButton(tr("Cancel"));
+    connect(cancelButton, SIGNAL(clicked()), this, SLOT(reject()));
+    buttonLayout->addWidget(cancelButton);
+    QPushButton *okButton = new QPushButton(tr("Ok"));
+    connect(okButton, SIGNAL(clicked()), this, SLOT(accept()));
+    buttonLayout->addWidget(okButton);
+
+    okButton->setDefault(true);
+}
+
+QString CreateDockWidgetDialog::objectName() const
+{
+    return m_objectName->text();
+}
+
+Qt::DockWidgetArea CreateDockWidgetDialog::location() const
+{
+    switch (m_location->currentIndex()) {
+        case 0: return Qt::TopDockWidgetArea;
+        case 1: return Qt::LeftDockWidgetArea;
+        case 2: return Qt::RightDockWidgetArea;
+        case 3: return Qt::BottomDockWidgetArea;
+        default:
+            break;
+    }
+    return Qt::NoDockWidgetArea;
+}
+
+void MainWindow::createDockWidget()
+{
+    CreateDockWidgetDialog dialog(this);
+    int ret = dialog.exec();
+    if (ret == QDialog::Rejected)
+        return;
+
+    QDockWidget *dw = new QDockWidget;
+    dw->setObjectName(dialog.objectName());
+    dw->setWindowTitle(dialog.objectName());
+    dw->setWidget(new QTextEdit);
+
+    Qt::DockWidgetArea area = dialog.location();
+    switch (area) {
+        case Qt::LeftDockWidgetArea:
+        case Qt::RightDockWidgetArea:
+        case Qt::TopDockWidgetArea:
+        case Qt::BottomDockWidgetArea:
+            addDockWidget(area, dw);
+            break;
+        default:
+            if (!restoreDockWidget(dw)) {
+                QMessageBox::warning(this, QString(), tr("Failed to restore dock widget"));
+                delete dw;
+                return;
+            }
+            break;
+    }
+
+    extraDockWidgets.append(dw);
+    destroyDockWidgetMenu->setEnabled(true);
+    destroyDockWidgetMenu->addAction(new QAction(dialog.objectName(), this));
+}
+
+void MainWindow::destroyDockWidget(QAction *action)
+{
+    int index = destroyDockWidgetMenu->actions().indexOf(action);
+    delete extraDockWidgets.takeAt(index);
+    destroyDockWidgetMenu->removeAction(action);
+    action->deleteLater();
+
+    if (destroyDockWidgetMenu->isEmpty())
+        destroyDockWidgetMenu->setEnabled(false);
+}