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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<!-- /home/espenr/tmp/qt-3.3.8-espenr-2499/qt-x11-free-3.3.8/examples/sound/sound.doc:1 -->
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<head>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<title>Sound Example</title>
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<td align="right" valign="center"><img src="logo32.png" align="right" width="64" height="32" border="0"></td></tr></table><h1 align=center>Sound Example</h1>

   
<p> 
This example shows how easy it is to play sounds, e.g. .WAV files,
if your machine is set up to play audio.
<p> <hr>
<p> Header file:
<p> <pre>/****************************************************************************
** $Id: qt/sound.h   3.3.8   edited Jan 11 14:37 $
**
** Copyright (C) 1992-2007 Trolltech ASA.  All rights reserved.
**
** This file is part of an example program for Qt.  This example
** program may be used, distributed and modified without limitation.
**
*****************************************************************************/
#ifndef PLAY_H
#define PLAY_H

#include "qsound.h"
#include &lt;<a href="qmainwindow-h.html">qmainwindow.h</a>&gt;

class SoundPlayer : public <a href="qmainwindow.html">QMainWindow</a> {
    <a href="metaobjects.html#Q_OBJECT">Q_OBJECT</a>
public:
    SoundPlayer();

public slots:
    void doPlay1();
    void doPlay2();
    void doPlay3();
    void doPlay4();
    void doPlay34();
    void doPlay1234();

private:
    <a href="qsound.html">QSound</a> bucket3;
    <a href="qsound.html">QSound</a> bucket4;
};

#endif
</pre>

<p> <hr>
<p> Implementation:
<p> <pre>/****************************************************************************
** $Id: qt/sound.cpp   3.3.8   edited Jan 11 14:37 $
**
** Copyright (C) 1992-2007 Trolltech ASA.  All rights reserved.
**
** This file is part of an example program for Qt.  This example
** program may be used, distributed and modified without limitation.
**
*****************************************************************************/
//
// Very simple example of QSound::play(filename)
//
// 99% of this program is just boilerplate Qt code to put up a nice
// window so you think something special is happening.
//

#include "sound.h"
#include &lt;<a href="qapplication-h.html">qapplication.h</a>&gt;
#include &lt;<a href="qmessagebox-h.html">qmessagebox.h</a>&gt;
#include &lt;<a href="qmenubar-h.html">qmenubar.h</a>&gt;

<a name="f581"></a>SoundPlayer::SoundPlayer() :
    <a href="qmainwindow.html">QMainWindow</a>(),
    bucket3("sounds/3.wav"),
    bucket4("sounds/4.wav")
{
    if (!QSound::isAvailable()) {
        // Bail out.  Programs in which sound is not critical
        // could just silently (hehe) ignore the lack of a server.
        //
<a name="x2812"></a>        QMessageBox::<a href="qmessagebox.html#warning">warning</a>(this,"No Sound",
                "&lt;p&gt;&lt;b&gt;Sorry, you are not running the Network Audio System.&lt;/b&gt;"
                "&lt;p&gt;If you have the `au' command, run it in the background before this program. "
                "The latest release of the Network Audio System can be obtained from:"
                "&lt;pre&gt;\n"
                " &amp;nbsp;\n"
                "   ftp.ncd.com:/pub/ncd/technology/src/nas\n"
                "   ftp.x.org:/contrib/audio/nas\n"
                "&lt;/pre&gt;"
                "&lt;p&gt;Release 1.2 of NAS is also included with the X11R6"
                "contrib distribution."
                "&lt;p&gt;After installing NAS, you will then need to reconfigure Qt with NAS sound support");
    }

    <a href="qpopupmenu.html">QPopupMenu</a> *file = new <a href="qpopupmenu.html">QPopupMenu</a>;
<a name="x2810"></a>    file-&gt;<a href="qmenudata.html#insertItem">insertItem</a>("Play &amp;1",  this, SLOT(doPlay1()), CTRL+Key_1);
    file-&gt;<a href="qmenudata.html#insertItem">insertItem</a>("Play &amp;2",  this, SLOT(doPlay2()), CTRL+Key_2);
    file-&gt;<a href="qmenudata.html#insertItem">insertItem</a>("Play from bucket &amp;3",  this, SLOT(doPlay3()), CTRL+Key_3);
    file-&gt;<a href="qmenudata.html#insertItem">insertItem</a>("Play from bucket &amp;4",  this, SLOT(doPlay4()), CTRL+Key_4);
<a name="x2811"></a>    file-&gt;<a href="qmenudata.html#insertSeparator">insertSeparator</a>();
    file-&gt;<a href="qmenudata.html#insertItem">insertItem</a>("Play 3 and 4 together",  this, SLOT(doPlay34()));
    file-&gt;<a href="qmenudata.html#insertItem">insertItem</a>("Play all together",  this, SLOT(doPlay1234()));
    file-&gt;<a href="qmenudata.html#insertSeparator">insertSeparator</a>();
    file-&gt;<a href="qmenudata.html#insertItem">insertItem</a>("E&amp;xit",  qApp, SLOT(<a href="qapplication.html#quit">quit</a>()));
    <a href="qmainwindow.html#menuBar">menuBar</a>()-&gt;insertItem("&amp;File", file);
}

void <a name="f582"></a>SoundPlayer::doPlay1()
{
<a name="x2813"></a>    QSound::<a href="qsound.html#play">play</a>("sounds/1.wav");
}

void <a name="f583"></a>SoundPlayer::doPlay2()
{
    QSound::<a href="qsound.html#play">play</a>("sounds/2.wav");
}

void <a name="f584"></a>SoundPlayer::doPlay3()
{
    bucket3.play();
}

void <a name="f585"></a>SoundPlayer::doPlay4()
{
    bucket4.play();
}

void <a name="f586"></a>SoundPlayer::doPlay34()
{
    // Some sound platforms will only play one sound at a time
    bucket3.play();
    bucket4.play();
}

void <a name="f587"></a>SoundPlayer::doPlay1234()
{
    // Some sound platforms will only play one sound at a time
    QSound::<a href="qsound.html#play">play</a>("sounds/1.wav");
    QSound::<a href="qsound.html#play">play</a>("sounds/2.wav");
    bucket3.play();
    bucket4.play();
}

int main(int argc, char** argv)
{
    <a href="qapplication.html">QApplication</a> app(argc,argv);
    SoundPlayer sp;
    app.<a href="qapplication.html#setMainWidget">setMainWidget</a>(&amp;sp);
    sp.<a href="qwidget.html#setCaption">setCaption</a>("Qt Example - Sounds");
    sp.<a href="qwidget.html#show">show</a>();
    return app.<a href="qapplication.html#exec">exec</a>();
}

</pre>

<p> <p>See also <a href="examples.html">Examples</a>.

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