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diff --git a/examples/xmlpatterns/filetree/mainwindow.cpp b/examples/xmlpatterns/filetree/mainwindow.cpp
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+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the examples of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:BSD$
+** 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 Nokia Corporation and its Subsidiary(-ies) 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>
+#include <QLibraryInfo>
+#include <QtXmlPatterns>
+
+#include "mainwindow.h"
+#include "xmlsyntaxhighlighter.h"
+
+//! [0]
+MainWindow::MainWindow() : m_fileTree(m_namePool)
+{
+    setupUi(this);
+
+    new XmlSyntaxHighlighter(fileTree->document());
+
+    // Set up the font.
+    {
+        QFont font("Courier",10);
+        font.setFixedPitch(true);
+
+        fileTree->setFont(font);
+        queryEdit->setFont(font);
+        output->setFont(font);
+    }
+
+    const QString dir(QLibraryInfo::location(QLibraryInfo::ExamplesPath) + "/xmlpatterns/filetree");
+    qDebug() << dir;
+
+    if (QDir(dir).exists())
+        loadDirectory(dir);
+    else
+        fileTree->setPlainText(tr("Use the Open menu entry to select a directory."));
+
+    const QStringList queries(QDir(":/queries/", "*.xq").entryList());
+    int len = queries.count();
+
+    for (int i = 0; i < len; ++i)
+        queryBox->addItem(queries.at(i));
+
+}
+//! [0]
+
+//! [2]
+void MainWindow::on_queryBox_currentIndexChanged()
+{
+    QFile queryFile(":/queries/" + queryBox->currentText());
+    queryFile.open(QIODevice::ReadOnly);
+
+    queryEdit->setPlainText(QString::fromLatin1(queryFile.readAll()));
+    evaluateResult();
+}
+//! [2]
+
+//! [3]
+void MainWindow::evaluateResult()
+{
+    if (queryBox->currentText().isEmpty())
+        return;
+
+    QXmlQuery query(m_namePool);
+    query.bindVariable("fileTree", m_fileNode);
+    query.setQuery(QUrl("qrc:/queries/" + queryBox->currentText()));
+
+    QByteArray formatterOutput;
+    QBuffer buffer(&formatterOutput);
+    buffer.open(QIODevice::WriteOnly);
+
+    QXmlFormatter formatter(query, &buffer);
+    query.evaluateTo(&formatter);
+
+    output->setText(QString::fromLatin1(formatterOutput.constData()));
+}
+//! [3]
+
+//! [1]
+void MainWindow::on_actionOpenDirectory_triggered()
+{
+    const QString directoryName = QFileDialog::getExistingDirectory(this);
+    if (!directoryName.isEmpty())
+        loadDirectory(directoryName);
+}
+//! [1]
+
+//! [4]
+//! [5]
+void MainWindow::loadDirectory(const QString &directory)
+{
+    Q_ASSERT(QDir(directory).exists());
+
+    m_fileNode = m_fileTree.nodeFor(directory);
+//! [5]
+
+    QXmlQuery query(m_namePool);
+    query.bindVariable("fileTree", m_fileNode);
+    query.setQuery(QUrl("qrc:/queries/wholeTree.xq"));
+
+    QByteArray output;
+    QBuffer buffer(&output);
+    buffer.open(QIODevice::WriteOnly);
+
+    QXmlFormatter formatter(query, &buffer);
+    query.evaluateTo(&formatter);
+
+    treeInfo->setText(tr("Model of %1 output as XML.").arg(directory));
+    fileTree->setText(QString::fromLatin1(output.constData()));
+    evaluateResult();
+//! [6]    
+}
+//! [6]    
+//! [4]
+
+void MainWindow::on_actionAbout_triggered()
+{
+    QMessageBox::about(this, tr("About File Tree"),
+                   tr("<p>Select <b>File->Open Directory</b> and "
+                      "choose a directory. The directory is then "
+                      "loaded into the model, and the model is "
+                      "displayed on the left as XML.</p>"
+
+                      "<p>From the query menu on the right, select "
+                      "a query. The query is displayed and then run "
+                      "on the model. The results are displayed below "
+                      "the query.</p>"));
+}
+
+