Can't get QSoundEffect to play

[leinad]

Hi,

I wrote a very simple program to play .wav file which I got from c:/Windows/Media. For some reason when I try to play the wav file nothing happens. I even copied the audio dll's from my Qt 5.12.2 folder into the bin folder where the program exe files live.

Below is the program.
#include "mainwindow.h"
#include "ui_mainwindow.h"

MainWindow::MainWindow(QWidget *parent)
: QMainWindow(parent)
, ui(new Ui::MainWindow)
{
ui->setupUi(this);

playSound();

}

MainWindow::~MainWindow()
{
delete ui;
}

void MainWindow::playSound()
{
QSoundEffect effect;
QString consoleBinDir(QApplication::applicationDirPath());
QString waveFile = QDir::cleanPath(consoleBinDir + "/Alarm01.wav");
effect.setSource(QUrl::fromLocalFile(waveFile));
qDebug() << QUrl::fromLocalFile(waveFile);
effect.setLoopCount(1);
effect.setVolume(1.0);
effect.play();
}
When I print out QUrl::fromLocalFile(waveFile) I get "QUrl("file:///C:/Qt-development/build-sound-Desktop_Qt_5_15_2_MSVC2019_64bit-Debug/debug/Alarm01.wav")" which seems correct. The wave file is certainly located there.

Can someone please explain to me what I'm doing wrong? It's only a few lines of code!

Thanks

[Christian Ehrlicher]

@leinad said in Can't get QSoundEffect to play:

QSoundEffect effect;

Basic C++ - how long does this object live?

[leinad]

It exists I guess after the play() is called, how can I make it live until the play is completed? I tried putting a QThread::sleep after the play to hold the tread but still no sound.

[Christian Ehrlicher]

@leinad said in Can't get QSoundEffect to play:

ow can I make it live until the play is completed?

Again c++ basics - you can e.g. make it a member of your class.

[jsulm]

@leinad said in Can't get QSoundEffect to play:

I tried putting a QThread::sleep after the play to hold the tread but still no sound.

?!
Make effect a class member, or allocate it on the heap...

[leinad]

Got it! It works thanks!