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<h1 class="title">guitartuner.cpp Example File</h1>
<span class="small-subtitle">demos/mobile/guitartuner/src/guitartuner.cpp</span>
<!-- $$$demos/mobile/guitartuner/src/guitartuner.cpp-description -->
<div class="descr"> <a name="details"></a>
<pre class="cpp"> <span class="comment">/****************************************************************************
**
** Copyright (C) 2015 The Qt Company Ltd.
** Contact: http://www.qt.io/licensing/
**
** This file is part of the QtDeclarative module 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 The Qt Company Ltd 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."
**
** $QT_END_LICENSE$
**
****************************************************************************/</span>
<span class="preprocessor">#include "guitartuner.h"</span>
<span class="preprocessor">#ifdef Q_OS_SYMBIAN</span>
<span class="preprocessor">#include <SoundDevice.h></span>
<span class="preprocessor">#endif // Q_OS_SYMBIAN</span>
<span class="preprocessor">#if defined(Q_OS_SYMBIAN) && defined(ORIENTATIONLOCK)</span>
<span class="preprocessor">#include <eikenv.h></span>
<span class="preprocessor">#include <eikappui.h></span>
<span class="preprocessor">#include <aknenv.h></span>
<span class="preprocessor">#include <aknappui.h></span>
<span class="preprocessor">#endif // Q_OS_SYMBIAN && ORIENTATIONLOCK</span>
GuitarTuner<span class="operator">::</span>GuitarTuner(<span class="type"><a href="qwidget.html">QWidget</a></span> <span class="operator">*</span>parent) :
<span class="type"><a href="qmainwindow.html">QMainWindow</a></span>(parent)
{
<span class="comment">// Set up the QML.</span>
m_guitarTunerUI <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qdeclarativeview.html">QDeclarativeView</a></span>(<span class="type"><a href="qurl.html">QUrl</a></span>(<span class="string">"qrc:/src/application.qml"</span>)<span class="operator">,</span> <span class="keyword">this</span>);
setCentralWidget(m_guitarTunerUI);
m_guitarTunerUI<span class="operator">-</span><span class="operator">></span>setResizeMode(<span class="type"><a href="qdeclarativeview.html">QDeclarativeView</a></span><span class="operator">::</span>SizeRootObjectToView);
qmlObject <span class="operator">=</span> m_guitarTunerUI<span class="operator">-</span><span class="operator">></span>rootObject();
<span class="comment">// Init audio output and input.</span>
initAudioOutput();
initAudioInput();
<span class="comment">// Connect the quit signal of m_guitarTunerUI</span>
<span class="comment">// into the close slot of this.</span>
connect(m_guitarTunerUI<span class="operator">-</span><span class="operator">></span>engine()<span class="operator">,</span> SIGNAL(quit())<span class="operator">,</span> SLOT(close()));
<span class="comment">// Connect the signals from qmlObject into proper slots</span>
<span class="comment">// of this and m_voicegenerator.</span>
connect(qmlObject<span class="operator">,</span> SIGNAL(muteStateChanged(<span class="type">bool</span>))<span class="operator">,</span>
SLOT(muteStateChanged(<span class="type">bool</span>)));
connect(qmlObject<span class="operator">,</span> SIGNAL(volumeChanged(<span class="type"><a href="qtglobal.html#qreal-typedef">qreal</a></span>))<span class="operator">,</span>
m_voicegenerator<span class="operator">,</span> SLOT(setAmplitude(<span class="type"><a href="qtglobal.html#qreal-typedef">qreal</a></span>)));
connect(qmlObject<span class="operator">,</span> SIGNAL(volumeChanged(<span class="type"><a href="qtglobal.html#qreal-typedef">qreal</a></span>))<span class="operator">,</span>
SLOT(setMaxVolumeLevel(<span class="type"><a href="qtglobal.html#qreal-typedef">qreal</a></span>)));
<span class="comment">// Connect the modeChanged signal from qmlObject</span>
<span class="comment">// into modeChanged slot of this class.</span>
connect(qmlObject<span class="operator">,</span> SIGNAL(modeChanged(<span class="type">bool</span>))<span class="operator">,</span>
SLOT(modeChanged(<span class="type">bool</span>)));
<span class="comment">// Connect the microphoneSensitivityChanged signal from</span>
<span class="comment">// m_guitarTunerUI into setCutOffPercentage slot of m_analyzer class.</span>
connect(qmlObject<span class="operator">,</span> SIGNAL(microphoneSensitivityChanged(<span class="type"><a href="qtglobal.html#qreal-typedef">qreal</a></span>))<span class="operator">,</span>
m_analyzer<span class="operator">,</span> SLOT(setCutOffPercentage(<span class="type"><a href="qtglobal.html#qreal-typedef">qreal</a></span>)));
<span class="comment">// Connect the signals from m_analyzer into slots of qmlObject.</span>
connect(m_analyzer<span class="operator">,</span> SIGNAL(lowVoice())<span class="operator">,</span>
qmlObject<span class="operator">,</span> SLOT(lowVoice()));
connect(m_analyzer<span class="operator">,</span> SIGNAL(correctFrequency())<span class="operator">,</span>
qmlObject<span class="operator">,</span> SLOT(correctFrequencyObtained()));
connect(m_analyzer<span class="operator">,</span> SIGNAL(voiceDifference(<span class="type"><a href="qvariant.html">QVariant</a></span>))<span class="operator">,</span>
qmlObject<span class="operator">,</span> SLOT(voiceDifferenceChanged(<span class="type"><a href="qvariant.html">QVariant</a></span>)));
<span class="comment">// Initialise the MaximumVoiceDifference</span>
<span class="comment">// value of qmlObject with the value obtained from m_analyzer.</span>
qmlObject<span class="operator">-</span><span class="operator">></span>setProperty(<span class="string">"maxVoiceDifference"</span><span class="operator">,</span>
m_analyzer<span class="operator">-</span><span class="operator">></span>getMaximumVoiceDifference());
<span class="comment">// Connect the targetFrequencyChanged signal of qmlObject</span>
<span class="comment">// into targetFrequencyChanged slot of this class.</span>
connect(qmlObject<span class="operator">,</span> SIGNAL(targetFrequencyChanged(<span class="type"><a href="qtglobal.html#qreal-typedef">qreal</a></span>))<span class="operator">,</span>
SLOT(targetFrequencyChanged(<span class="type"><a href="qtglobal.html#qreal-typedef">qreal</a></span>)));
<span class="comment">// Start voice output or input by using the modeChanged function,</span>
<span class="comment">// depending of the current mode.</span>
modeChanged(qmlObject<span class="operator">-</span><span class="operator">></span>property(<span class="string">"isInput"</span>)<span class="operator">.</span>toBool());
}
<span class="comment">/**
* Inits audio output.
*/</span>
<span class="type">void</span> GuitarTuner<span class="operator">::</span>initAudioOutput()
{
<span class="comment">// Set up the output format.</span>
m_format_output<span class="operator">.</span>setFrequency(DataFrequencyHzOutput);
m_format_output<span class="operator">.</span>setCodec(<span class="string">"audio/pcm"</span>);
m_format_output<span class="operator">.</span>setSampleSize(<span class="number">16</span>);
m_format_output<span class="operator">.</span>setChannels(<span class="number">1</span>);
m_format_output<span class="operator">.</span>setByteOrder(<span class="type"><a href="qaudioformat.html">QAudioFormat</a></span><span class="operator">::</span>LittleEndian);
m_format_output<span class="operator">.</span>setSampleType(<span class="type"><a href="qaudioformat.html">QAudioFormat</a></span><span class="operator">::</span>SignedInt);
<span class="comment">// Obtain a default output device, and if the format is not</span>
<span class="comment">// supported, find the nearest format available.</span>
<span class="type"><a href="qaudiodeviceinfo.html">QAudioDeviceInfo</a></span> outputDeviceInfo(
<span class="type"><a href="qaudiodeviceinfo.html">QAudioDeviceInfo</a></span><span class="operator">::</span>defaultOutputDevice());
<span class="keyword">if</span> (<span class="operator">!</span>outputDeviceInfo<span class="operator">.</span>isFormatSupported(m_format_output)) {
m_format_output <span class="operator">=</span> outputDeviceInfo<span class="operator">.</span>nearestFormat(m_format_output);
}
<span class="comment">// Create new QAudioOutput and VoiceGenerator instances, and store</span>
<span class="comment">// them in m_audioOutput and m_voicegenerator, respectively.</span>
m_audioOutput <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qaudiooutput.html">QAudioOutput</a></span>(outputDeviceInfo<span class="operator">,</span>
m_format_output<span class="operator">,</span> <span class="keyword">this</span>);
m_voicegenerator <span class="operator">=</span> <span class="keyword">new</span> VoiceGenerator(m_format_output<span class="operator">,</span>
qmlObject<span class="operator">-</span><span class="operator">></span>property(<span class="string">"frequency"</span>)<span class="operator">.</span>toReal()<span class="operator">,</span>
qmlObject<span class="operator">-</span><span class="operator">></span>property(<span class="string">"volume"</span>)<span class="operator">.</span>toReal()<span class="operator">,</span>
<span class="keyword">this</span>);
<span class="comment">// Connect m_audioOutput stateChanged signal to outputStateChanged.</span>
connect(m_audioOutput<span class="operator">,</span> SIGNAL(stateChanged(<span class="type"><a href="qaudio.html">QAudio</a></span><span class="operator">::</span>State))<span class="operator">,</span>
SLOT(outputStateChanged(<span class="type"><a href="qaudio.html">QAudio</a></span><span class="operator">::</span>State)));
}
<span class="comment">/**
* Inits audio input.
*/</span>
<span class="type">void</span> GuitarTuner<span class="operator">::</span>initAudioInput()
{
<span class="comment">// Set up the input format.</span>
m_format_input<span class="operator">.</span>setFrequency(DataFrequencyHzInput);
m_format_input<span class="operator">.</span>setCodec(<span class="string">"audio/pcm"</span>);
m_format_input<span class="operator">.</span>setSampleSize(<span class="number">16</span>);
m_format_input<span class="operator">.</span>setChannels(<span class="number">1</span>);
m_format_input<span class="operator">.</span>setByteOrder(<span class="type"><a href="qaudioformat.html">QAudioFormat</a></span><span class="operator">::</span>LittleEndian);
m_format_input<span class="operator">.</span>setSampleType(<span class="type"><a href="qaudioformat.html">QAudioFormat</a></span><span class="operator">::</span>SignedInt);
<span class="comment">// Obtain a default input device, and if the format is not</span>
<span class="comment">// supported, find the nearest format available.</span>
<span class="type"><a href="qaudiodeviceinfo.html">QAudioDeviceInfo</a></span> inputDeviceInfo(
<span class="type"><a href="qaudiodeviceinfo.html">QAudioDeviceInfo</a></span><span class="operator">::</span>defaultInputDevice());
<span class="keyword">if</span> (<span class="operator">!</span>inputDeviceInfo<span class="operator">.</span>isFormatSupported(m_format_input)) {
m_format_input <span class="operator">=</span> inputDeviceInfo<span class="operator">.</span>nearestFormat(m_format_input);
}
<span class="comment">// Create new QAudioInput and VoiceAnalyzer instances, and store</span>
<span class="comment">// them in m_audioInput and m_analyzer, respectively.</span>
<span class="comment">// Remember to set the cut-off percentage for voice analyzer.</span>
m_audioInput <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qaudioinput.html">QAudioInput</a></span>(inputDeviceInfo<span class="operator">,</span> m_format_input<span class="operator">,</span> <span class="keyword">this</span>);
m_analyzer <span class="operator">=</span> <span class="keyword">new</span> VoiceAnalyzer(m_format_input<span class="operator">,</span> <span class="keyword">this</span>);
m_analyzer<span class="operator">-</span><span class="operator">></span>setCutOffPercentage(qmlObject<span class="operator">-</span><span class="operator">></span>property(<span class="string">"sensitivity"</span>)<span class="operator">.</span>toReal());
}
<span class="comment">/**
* Receives a mode changed signal.
*/</span>
<span class="type">void</span> GuitarTuner<span class="operator">::</span>modeChanged(<span class="type">bool</span> isInput)
{
<span class="comment">// If the mode must be changed to input mode:</span>
<span class="keyword">if</span> (isInput) {
<span class="comment">// Stop audio output and audio generator.</span>
m_audioOutput<span class="operator">-</span><span class="operator">></span>stop();
m_voicegenerator<span class="operator">-</span><span class="operator">></span>stop();
<span class="comment">// Start the audio analyzer and then the audio input.</span>
m_analyzer<span class="operator">-</span><span class="operator">></span>start(qmlObject<span class="operator">-</span><span class="operator">></span>property(<span class="string">"frequency"</span>)<span class="operator">.</span>toReal());
m_audioInput<span class="operator">-</span><span class="operator">></span>start(m_analyzer);
}
<span class="comment">// Else:</span>
<span class="keyword">else</span> {
<span class="comment">// Stop audio input and audio analyzer.</span>
m_audioInput<span class="operator">-</span><span class="operator">></span>stop();
m_analyzer<span class="operator">-</span><span class="operator">></span>stop();
<span class="comment">// Set up the audio output.</span>
<span class="comment">// If the current frequency of voice generator</span>
<span class="comment">// is not the same as the target frequency selected in the UI,</span>
<span class="comment">// update voice generator's frequency.</span>
<span class="keyword">if</span> (m_voicegenerator<span class="operator">-</span><span class="operator">></span>frequency() <span class="operator">!</span><span class="operator">=</span> qmlObject<span class="operator">-</span><span class="operator">></span>property(<span class="string">"frequency"</span>)<span class="operator">.</span>toReal()) {
m_voicegenerator<span class="operator">-</span><span class="operator">></span>setFrequency(qmlObject<span class="operator">-</span><span class="operator">></span>property(<span class="string">"frequency"</span>)<span class="operator">.</span>toReal());
}
<span class="comment">// Start the voice generator and then the audio output.</span>
m_voicegenerator<span class="operator">-</span><span class="operator">></span>start();
m_audioOutput<span class="operator">-</span><span class="operator">></span>start(m_voicegenerator);
<span class="comment">// Call setMaxVolumeLevel(1) to set the maximum volume louder.</span>
setMaxVolumeLevel(qmlObject<span class="operator">-</span><span class="operator">></span>property(<span class="string">"volume"</span>)<span class="operator">.</span>toReal());
<span class="comment">// If the voice is muted, the voice is suspended</span>
<span class="comment">// in the outputStateChanged slot.</span>
}
}
<span class="comment">/**
* Receives a output state changed signal.
* Suspends the audio output, if the state is ActiveState
* and the voice is muted.
*/</span>
<span class="type">void</span> GuitarTuner<span class="operator">::</span>outputStateChanged(<span class="type"><a href="qaudio.html">QAudio</a></span><span class="operator">::</span>State state)
{
<span class="keyword">if</span> (<span class="type"><a href="qaudio.html">QAudio</a></span><span class="operator">::</span>ActiveState <span class="operator">=</span><span class="operator">=</span> state <span class="operator">&</span><span class="operator">&</span> qmlObject<span class="operator">-</span><span class="operator">></span>property(<span class="string">"isMuted"</span>)<span class="operator">.</span>toBool()) {
<span class="comment">// If the voice is muted, suspend the voice.</span>
m_audioOutput<span class="operator">-</span><span class="operator">></span>suspend();
}
}
<span class="comment">/**
* Receives a mute state changed signal.
* Suspends the audio output or resumes it, depending of the
* isMuted parameter.
*/</span>
<span class="type">void</span> GuitarTuner<span class="operator">::</span>muteStateChanged(<span class="type">bool</span> isMuted)
{
<span class="keyword">if</span> (isMuted) {
m_audioOutput<span class="operator">-</span><span class="operator">></span>suspend();
}
<span class="keyword">else</span> {
m_audioOutput<span class="operator">-</span><span class="operator">></span>resume();
}
}
<span class="comment">/**
* Receives a target frequency signal.
*/</span>
<span class="type">void</span> GuitarTuner<span class="operator">::</span>targetFrequencyChanged(<span class="type"><a href="qtglobal.html#qreal-typedef">qreal</a></span> targetFrequency)
{
<span class="comment">// If the output mode is active:</span>
<span class="keyword">if</span> (<span class="operator">!</span>qmlObject<span class="operator">-</span><span class="operator">></span>property(<span class="string">"isInput"</span>)<span class="operator">.</span>toBool()) {
<span class="comment">// Stop the audio output and voice generator.</span>
m_audioOutput<span class="operator">-</span><span class="operator">></span>stop();
m_voicegenerator<span class="operator">-</span><span class="operator">></span>stop();
<span class="comment">// Set the voice generator's frequency to the target frequency.</span>
m_voicegenerator<span class="operator">-</span><span class="operator">></span>setFrequency(targetFrequency);
<span class="comment">// Start the voice generator and audio output.</span>
m_voicegenerator<span class="operator">-</span><span class="operator">></span>start();
m_audioOutput<span class="operator">-</span><span class="operator">></span>start(m_voicegenerator);
<span class="comment">// Call setMaxVolumeLevel(1) to set the maximum volume louder.</span>
setMaxVolumeLevel(qmlObject<span class="operator">-</span><span class="operator">></span>property(<span class="string">"volume"</span>)<span class="operator">.</span>toReal());
<span class="comment">// If the voice is muted, the voice is suspended</span>
<span class="comment">// in the outputStateChanged slot.</span>
}
<span class="comment">// Else:</span>
<span class="keyword">else</span> {
<span class="comment">// Stop the audio input and voice analyzer.</span>
m_audioInput<span class="operator">-</span><span class="operator">></span>stop();
m_analyzer<span class="operator">-</span><span class="operator">></span>stop();
<span class="comment">// Start the voice analyzer with new frequency and audio input.</span>
m_analyzer<span class="operator">-</span><span class="operator">></span>start(targetFrequency);
m_audioInput<span class="operator">-</span><span class="operator">></span>start(m_analyzer);
}
}
<span class="comment">/**
* This method provides a hack to set the maximum volume level in
* Symbian.
*/</span>
<span class="type">void</span> GuitarTuner<span class="operator">::</span>setMaxVolumeLevel(<span class="type"><a href="qtglobal.html#qreal-typedef">qreal</a></span> percent)
{
<span class="keyword">if</span> (percent <span class="operator">></span><span class="operator">=</span> <span class="number">1.0</span>) {
percent <span class="operator">=</span> <span class="number">1.0</span>;
}
<span class="keyword">else</span> <span class="keyword">if</span> (percent <span class="operator"><</span><span class="operator">=</span> <span class="number">0.0</span>) {
percent <span class="operator">=</span> <span class="number">0.0</span>;
}
percent <span class="operator">=</span> percent<span class="operator">*</span><span class="number">0.5</span> <span class="operator">+</span> <span class="number">0.5</span>;
<span class="comment">// Warning! This is a hack, which can break when the QtMobility</span>
<span class="comment">// changes. Use at your own risk.</span>
<span class="preprocessor">#ifdef Q_OS_SYMBIAN</span>
<span class="type">unsigned</span> <span class="type">int</span> <span class="operator">*</span>pointer_to_abstract_audio
<span class="operator">=</span> (<span class="type">unsigned</span> <span class="type">int</span><span class="operator">*</span>)( (<span class="type">unsigned</span> <span class="type">char</span><span class="operator">*</span>)m_audioOutput <span class="operator">+</span> <span class="number">8</span> );
<span class="type">unsigned</span> <span class="type">int</span> <span class="operator">*</span>dev_sound_wrapper
<span class="operator">=</span> (<span class="type">unsigned</span> <span class="type">int</span><span class="operator">*</span>)(<span class="operator">*</span>pointer_to_abstract_audio) <span class="operator">+</span> <span class="number">16</span>;
<span class="type">unsigned</span> <span class="type">int</span> <span class="operator">*</span>temp
<span class="operator">=</span> ((<span class="type">unsigned</span> <span class="type">int</span><span class="operator">*</span>)(<span class="operator">*</span>dev_sound_wrapper) <span class="operator">+</span> <span class="number">6</span>);
CMMFDevSound <span class="operator">*</span>dev_sound <span class="operator">=</span> (CMMFDevSound<span class="operator">*</span>)(<span class="operator">*</span>temp);
dev_sound<span class="operator">-</span><span class="operator">></span>SetVolume((<span class="type">unsigned</span> <span class="type">int</span>)
(percent<span class="operator">*</span>(<span class="type">float</span>)dev_sound<span class="operator">-</span><span class="operator">></span>MaxVolume()));
<span class="preprocessor">#endif</span>
}
<span class="comment">/**
* A function used to lock the orientation.
*/</span>
<span class="type">void</span> GuitarTuner<span class="operator">::</span>setOrientation(Orientation orientation)
{
<span class="preprocessor">#ifdef Q_OS_SYMBIAN</span>
<span class="keyword">if</span> (orientation <span class="operator">!</span><span class="operator">=</span> Auto) {
<span class="preprocessor">#if defined(ORIENTATIONLOCK)</span>
<span class="keyword">const</span> CAknAppUiBase<span class="operator">::</span>TAppUiOrientation uiOrientation <span class="operator">=</span>
(orientation <span class="operator">=</span><span class="operator">=</span> LockPortrait)
<span class="operator">?</span> CAknAppUi<span class="operator">::</span>EAppUiOrientationPortrait
: CAknAppUi<span class="operator">::</span>EAppUiOrientationLandscape;
CAknAppUi<span class="operator">*</span> appUi <span class="operator">=</span> <span class="keyword">dynamic_cast</span><span class="operator"><</span>CAknAppUi<span class="operator">*</span><span class="operator">></span>
(CEikonEnv<span class="operator">::</span>Static()<span class="operator">-</span><span class="operator">></span>AppUi());
TRAPD(error<span class="operator">,</span>
<span class="keyword">if</span> (appUi)
appUi<span class="operator">-</span><span class="operator">></span>SetOrientationL(uiOrientation);
);
<span class="preprocessor">#else // ORIENTATIONLOCK</span>
<a href="qtglobal.html#qWarning">qWarning</a>(<span class="type"><a href="qstring.html">QString</a></span>(<span class="string">"'ORIENTATIONLOCK' needs to be defined on"</span>)
<span class="operator">+</span><span class="type"><a href="qstring.html">QString</a></span>(<span class="string">" Symbian when locking the orientation."</span>));
<span class="preprocessor">#endif // ORIENTATIONLOCK</span>
}
<span class="preprocessor">#elif defined(Q_WS_MAEMO_5)</span>
<span class="type"><a href="qt.html">Qt</a></span><span class="operator">::</span>WidgetAttribute attribute;
<span class="keyword">switch</span> (orientation) {
<span class="keyword">case</span> LockPortrait:
attribute <span class="operator">=</span> <span class="type"><a href="qt.html">Qt</a></span><span class="operator">::</span>WA_Maemo5PortraitOrientation;
<span class="keyword">break</span>;
<span class="keyword">case</span> LockLandscape:
attribute <span class="operator">=</span> <span class="type"><a href="qt.html">Qt</a></span><span class="operator">::</span>WA_Maemo5LandscapeOrientation;
<span class="keyword">break</span>;
<span class="keyword">case</span> Auto:
<span class="keyword">default</span>:
attribute <span class="operator">=</span> <span class="type"><a href="qt.html">Qt</a></span><span class="operator">::</span>WA_Maemo5AutoOrientation;
<span class="keyword">break</span>;
}
setAttribute(attribute<span class="operator">,</span> <span class="keyword">true</span>);
<span class="preprocessor">#else // Q_OS_SYMBIAN</span>
Q_UNUSED(orientation);
<span class="preprocessor">#endif // Q_OS_SYMBIAN</span>
}</pre>
</div>
<!-- @@@demos/mobile/guitartuner/src/guitartuner.cpp -->
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