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# Sound Example

This example shows how easy it is to play sounds, e.g. .WAV files, if your machine is set up to play audio.

Header file:

    /****************************************************************************
    ** $Id: qt/sound.h   3.2.3   edited May 13 09:08 $
    **
    ** Copyright (C) 1992-2000 Trolltech AS.  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 <qmainwindow.h>

    class SoundPlayer : public QMainWindow {
        Q_OBJECT
    public:
        SoundPlayer();

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

    private:
        QSound bucket3;
        QSound bucket4;
    };

    #endif

Implementation:

    /****************************************************************************
    ** $Id: qt/sound.cpp   3.2.3   edited May 13 09:08 $
    **
    ** Copyright (C) 1992-2000 Trolltech AS.  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 <qapplication.h>
    #include <qmessagebox.h>
    #include <qmenubar.h>

    SoundPlayer::SoundPlayer() :
        QMainWindow(),
        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.
            //
            QMessageBox::warning(this,"No Sound",
                    "<p><b>Sorry, you are not running the Network Audio System.</b>"
                    "<p>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:"
                    "<pre>\n"
                    " &nbsp;\n"
                    "   ftp.ncd.com:/pub/ncd/technology/src/nas\n"
                    "   ftp.x.org:/contrib/audio/nas\n"
                    "</pre>"
                    "<p>Release 1.2 of NAS is also included with the X11R6"
                    "contrib distribution."
                    "<p>After installing NAS, you will then need to reconfigure Qt with NAS sound support");
        }

        QPopupMenu *file = new QPopupMenu;
        file->insertItem("Play &1",  this, SLOT(doPlay1()), CTRL+Key_1);
        file->insertItem("Play &2",  this, SLOT(doPlay2()), CTRL+Key_2);
        file->insertItem("Play from bucket &3",  this, SLOT(doPlay3()), CTRL+Key_3);
        file->insertItem("Play from bucket &4",  this, SLOT(doPlay4()), CTRL+Key_4);
        file->insertSeparator();
        file->insertItem("Play 3 and 4 together",  this, SLOT(doPlay34()));
        file->insertItem("Play all together",  this, SLOT(doPlay1234()));
        file->insertSeparator();
        file->insertItem("E&xit",  qApp, SLOT(quit()));
        menuBar()->insertItem("&File", file);
    }

    void SoundPlayer::doPlay1()
    {
        QSound::play("sounds/1.wav");
    }

    void SoundPlayer::doPlay2()
    {
        QSound::play("sounds/2.wav");
    }

    void SoundPlayer::doPlay3()
    {
        bucket3.play();
    }

    void SoundPlayer::doPlay4()
    {
        bucket4.play();
    }

    void SoundPlayer::doPlay34()
    {
        // Some sound platforms will only play one sound at a time
        bucket3.play();
        bucket4.play();
    }

    void SoundPlayer::doPlay1234()
    {
        // Some sound platforms will only play one sound at a time
        QSound::play("sounds/1.wav");
        QSound::play("sounds/2.wav");
        bucket3.play();
        bucket4.play();
    }

    int main(int argc, char** argv)
    {
        QApplication app(argc,argv);
        SoundPlayer sp;
        app.setMainWidget(&sp);
        sp.setCaption("Qt Example - Sounds");
        sp.show();
        return app.exec();
    }

See also Examples.