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diff --git a/examples/servicefw/user/echowindow.cpp b/examples/servicefw/user/echowindow.cpp
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+/***************************************************************************
+**
+** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (directui@nokia.com)
+**
+** This file is part of libdui.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at directui@nokia.com.
+**
+** This library is free software; you can redistribute it and/or
+** modify it 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.
+**
+****************************************************************************/
+
+#include <QWidget>
+#include <QLabel>
+#include <QPushButton>
+#include <QLineEdit>
+#include <QGridLayout>
+#include <textprocessorinterface.h>
+
+#include "echowindow.h"
+
+EchoWindow::EchoWindow()
+{
+    createGUI();
+    setLayout(layout);
+    setWindowTitle("TextProcessor Demo");
+
+    // instantiate the interface
+    textProcessorInterface = new TextProcessorInterface();
+
+    // check the interface is valid
+    if (!textProcessorInterface->isValid()) {
+        disableTextProcessing(QString(0));
+        statusBar->showMessage("Err: Service unavailable");
+    }
+
+    // example of how to get a list of all installed services
+    if (textProcessorInterface->isValid()) {
+        QStringList services = textProcessorInterface->serviceNames();
+        QStringListIterator iterator(services);
+        qDebug() << "All services:";
+        while (iterator.hasNext())
+            qDebug() << iterator.next().toLocal8Bit().constData();
+    }
+
+    // example of how to get a list of all services for a particular interface
+    if (textProcessorInterface->isValid()) {
+        QStringList services = textProcessorInterface->serviceNames("com.nokia.TextProcessorInterface");
+        QStringListIterator iterator(services);
+        qDebug() << "Services implementing com.nokia.TextProcessorInterface:";
+        while (iterator.hasNext())
+            qDebug() << iterator.next().toLocal8Bit().constData();
+    }
+
+    // connect the availability signals
+    // you likely need to know when a service appears/disappears to
+    // do things like add/remove an option on a menu
+    connect(
+        textProcessorInterface, SIGNAL(serviceAvailable(QString)),
+        this, SLOT(enableTextProcessing(QString))
+    );
+    connect(
+        textProcessorInterface, SIGNAL(serviceUnavailable(QString)),
+        this, SLOT(disableTextProcessing(QString))
+    );
+    connect(
+        textProcessorInterface, SIGNAL(serviceChanged(QString)),
+        this, SLOT(enableTextProcessing(QString))
+    );
+}
+
+EchoWindow::~EchoWindow()
+{
+    delete textProcessorInterface;
+}
+
+void EchoWindow::sendEcho()
+{
+    // call the interface method to reverse the string
+    QString text = textProcessorInterface->reverse(lineEdit->text());
+
+    // set the label text to the reversed string
+    label->setText(text);
+}
+
+/*
+ * This function is specific to this example.
+ * Your own code will likely do something different
+ */
+void EchoWindow::createGUI()
+{
+    lineEdit = new QLineEdit;
+    label = new QLabel;
+    label->setFrameStyle(QFrame::Box | QFrame::Plain);
+    button = new QPushButton(tr("Send Message"));
+    statusBar = new QStatusBar;
+
+    connect(lineEdit, SIGNAL(editingFinished()),
+            this, SLOT(sendEcho()));
+    connect(button, SIGNAL(clicked()),
+            this, SLOT(sendEcho()));
+
+    layout = new QGridLayout;
+    layout->addWidget(new QLabel(tr("Message:")), 0, 0);
+    layout->addWidget(lineEdit, 0, 1);
+    layout->addWidget(new QLabel(tr("Answer:")), 1, 0);
+    layout->addWidget(label, 1, 1);
+    layout->addWidget(button, 2, 1, Qt::AlignRight);
+    layout->addWidget(statusBar, 3, 0, 1, 2);
+    layout->setSizeConstraint(QLayout::SetFixedSize);
+}
+
+/*
+ * This function is specific to this example.
+ * Your own code will likely do something different
+ */
+void EchoWindow::enableTextProcessing(const QString &service)
+{
+    statusBar->showMessage(service + " is available");
+    lineEdit->setEnabled(true);
+    label->setEnabled(true);
+    button->setEnabled(true);
+}
+
+/*
+ * This function is specific to this example.
+ * Your own code will likely do something different
+ */
+void EchoWindow::disableTextProcessing(const QString &service)
+{
+    statusBar->showMessage("Err: " + service + " is unavailable");
+    lineEdit->setEnabled(false);
+    label->setEnabled(false);
+    button->setEnabled(false);
+}