How to use QSound in Qt

Article Metadata

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Tested with

Devices(s): S60 Emulator

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Compatibility

Platform(s): S60 3rd Edition FP1, S60 3rd Edition FP2, S60 5th Edition

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Article

Keywords: QSound

Created: mind_freak (17 Mar 2009)

Last edited: hamishwillee (11 Oct 2012)

Overview

This article shows how to use QSound to asynchronously play sound files. QSound provides the simplest mechanism in Qt to access and play audio.

Preconditions

• Download and install the Qt SDK.

Function/Property

• Plays the sound stored in the file specified by the given filename

QSound *sound=new QSound("C://Documents and Settings//Viral//My Documents//sound//Windows XP Startup.wav");
   sound->setLoops(3);

Signal/Slots

• Starts playing the sound specified by this QSound object.

QObject::connect(play,SIGNAL(clicked()),sound,SLOT(play()));

• Stops the sound playing.

QObject::connect(stop,SIGNAL(clicked()),sound,SLOT(stop()));

Source File

#include <QtGui/QApplication>
#include "widget.h"
#include<QSound>
#include<QPushButton>
#include<QHBoxLayout>
#include<QWidget>
int main(int argc, char *argv[])
{
    QApplication a(argc, argv);
    QWidget *win=new QWidget();
    QHBoxLayout *lay=new QHBoxLayout();
    QSound *sound=new QSound("C://Documents and Settings//Viral//My Documents//sound//Windows XP Startup.wav");//getting the audio file 
    sound->setLoops(3);//three times that specific audio file is played
    QPushButton *play=new QPushButton("PLAY");//press button to play sound
    QPushButton *stop=new QPushButton("STOP");//press to stop playing
    QObject::connect(play,SIGNAL(clicked()),sound,SLOT(play()));
    QObject::connect(stop,SIGNAL(clicked()),sound,SLOT(stop()));
    lay->addWidget(play);
    lay->addWidget(stop);
    win->setLayout(lay);
    win->showMaximized();
    win->setStyleSheet("* { background-color:rgb(199,147,88); padding: 7px ; color:rgb(255,255,255)}");
    return a.exec();
}

See also

Playing audio with QSound in Qt