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diff --git a/examples/multimedia/spectrum/app/tonegeneratordialog.cpp b/examples/multimedia/spectrum/app/tonegeneratordialog.cpp
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+++ b/examples/multimedia/spectrum/app/tonegeneratordialog.cpp
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+/****************************************************************************
+**
+** Copyright (C) 2012 Digia Plc and/or its subsidiary(-ies).
+** Contact: http://www.qt-project.org/legal
+**
+** 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 Digia Plc 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 "tonegeneratordialog.h"
+#include <QComboBox>
+#include <QDialogButtonBox>
+#include <QLabel>
+#include <QPushButton>
+#include <QVBoxLayout>
+#include <QCheckBox>
+#include <QSlider>
+#include <QSpinBox>
+
+const int ToneGeneratorFreqMin = 1;
+const int ToneGeneratorFreqMax = 1000;
+const int ToneGeneratorFreqDefault = 440;
+const int ToneGeneratorAmplitudeDefault = 75;
+
+ToneGeneratorDialog::ToneGeneratorDialog(QWidget *parent)
+    :   QDialog(parent)
+    ,   m_toneGeneratorSweepCheckBox(new QCheckBox(tr("Frequency sweep"), this))
+    ,   m_frequencySweepEnabled(true)
+    ,   m_toneGeneratorControl(new QWidget(this))
+    ,   m_toneGeneratorFrequencyControl(new QWidget(this))
+    ,   m_frequencySlider(new QSlider(Qt::Horizontal, this))
+    ,   m_frequencySpinBox(new QSpinBox(this))
+    ,   m_frequency(ToneGeneratorFreqDefault)
+    ,   m_amplitudeSlider(new QSlider(Qt::Horizontal, this))
+{
+    QVBoxLayout *dialogLayout = new QVBoxLayout(this);
+
+    m_toneGeneratorSweepCheckBox->setChecked(true);
+
+    // Configure tone generator controls
+    m_frequencySlider->setRange(ToneGeneratorFreqMin, ToneGeneratorFreqMax);
+    m_frequencySlider->setValue(ToneGeneratorFreqDefault);
+    m_frequencySpinBox->setRange(ToneGeneratorFreqMin, ToneGeneratorFreqMax);
+    m_frequencySpinBox->setValue(ToneGeneratorFreqDefault);
+    m_amplitudeSlider->setRange(0, 100);
+    m_amplitudeSlider->setValue(ToneGeneratorAmplitudeDefault);
+
+    // Add widgets to layout
+    QGridLayout *frequencyControlLayout = new QGridLayout;
+    QLabel *frequencyLabel = new QLabel(tr("Frequency (Hz)"), this);
+    frequencyControlLayout->addWidget(frequencyLabel, 0, 0, 2, 1);
+    frequencyControlLayout->addWidget(m_frequencySlider, 0, 1);
+    frequencyControlLayout->addWidget(m_frequencySpinBox, 1, 1);
+    m_toneGeneratorFrequencyControl->setLayout(frequencyControlLayout);
+    m_toneGeneratorFrequencyControl->setEnabled(false);
+
+    QGridLayout *toneGeneratorLayout = new QGridLayout;
+    QLabel *amplitudeLabel = new QLabel(tr("Amplitude"), this);
+    toneGeneratorLayout->addWidget(m_toneGeneratorSweepCheckBox, 0, 1);
+    toneGeneratorLayout->addWidget(m_toneGeneratorFrequencyControl, 1, 0, 1, 2);
+    toneGeneratorLayout->addWidget(amplitudeLabel, 2, 0);
+    toneGeneratorLayout->addWidget(m_amplitudeSlider, 2, 1);
+    m_toneGeneratorControl->setLayout(toneGeneratorLayout);
+    m_toneGeneratorControl->setSizePolicy(QSizePolicy::Preferred, QSizePolicy::Fixed);
+    dialogLayout->addWidget(m_toneGeneratorControl);
+
+    // Connect
+    CHECKED_CONNECT(m_toneGeneratorSweepCheckBox, SIGNAL(toggled(bool)),
+                    this, SLOT(frequencySweepEnabled(bool)));
+    CHECKED_CONNECT(m_frequencySlider, SIGNAL(valueChanged(int)),
+                    m_frequencySpinBox, SLOT(setValue(int)));
+    CHECKED_CONNECT(m_frequencySpinBox, SIGNAL(valueChanged(int)),
+                    m_frequencySlider, SLOT(setValue(int)));
+
+    // Add standard buttons to layout
+    QDialogButtonBox *buttonBox = new QDialogButtonBox(this);
+    buttonBox->setStandardButtons(QDialogButtonBox::Ok | QDialogButtonBox::Cancel);
+    dialogLayout->addWidget(buttonBox);
+
+    // Connect standard buttons
+    CHECKED_CONNECT(buttonBox->button(QDialogButtonBox::Ok), SIGNAL(clicked()),
+                    this, SLOT(accept()));
+    CHECKED_CONNECT(buttonBox->button(QDialogButtonBox::Cancel), SIGNAL(clicked()),
+                    this, SLOT(reject()));
+
+    setLayout(dialogLayout);
+}
+
+ToneGeneratorDialog::~ToneGeneratorDialog()
+{
+
+}
+
+bool ToneGeneratorDialog::isFrequencySweepEnabled() const
+{
+    return m_toneGeneratorSweepCheckBox->isChecked();
+}
+
+qreal ToneGeneratorDialog::frequency() const
+{
+    return qreal(m_frequencySlider->value());
+}
+
+qreal ToneGeneratorDialog::amplitude() const
+{
+    return qreal(m_amplitudeSlider->value()) / 100.0;
+}
+
+void ToneGeneratorDialog::frequencySweepEnabled(bool enabled)
+{
+    m_frequencySweepEnabled = enabled;
+    m_toneGeneratorFrequencyControl->setEnabled(!enabled);
+}