how to add sound to a game in qt in an interface - qt

Question

i want to add a music in my game for a school project in qt but i saw that we have to use setMedia but he don't recognize it in the QMediaPLayer class and video about it are from so 2015 i think it change and i put a setSource but nos sound is coming from my game. I tried this but i don't have any ideas to make it work. Please help me.
#include <QMediaPlayer>
QMediaPlayer * player = new QMediaPlayer();
player->setSource(QUrl::fromLocalFile("C:/Users/Lea_CHABBAL/OneDrive/Bureau"));
player->play();

Answer 1

So that an audio file can be output, you must also set the output of your media player.
It is also important to make an entry in your project file:
qmake :
QT += core gui multimedia (add multimedia)
The code could then look like this:
#include <QMediaPlayer>
#include <QAudioOutput>
........
// if you want to use it as SLOT, it will be make sense to
// declare the mediaplayer and output in a header file
QMediaPlayer *player = new QMediaPlayer;
QAudioOutput *output = new QAudioOutput;
player->setAudioOutput(output);
player->setSource(QUrl("path"));
output->setVolume(0.5); // <--- floating numbers. from 0 - 1
player->play();
........

Answer 2

Try this (and don't forget the filename.wav at the end of the path)
musicPlayer = new QMediaPlayer(this);
musicPlayer->setVolume(30);
musicPlayer->setSource(QUrl::fromLocalFile("C:/Users/Lea_CHABBAL/OneDrive/Bureau/daftpunk_compil.wav"));
if(musicPlayer->error() == QMediaPlayer::NoError)
musicPlayer->play();
else
qDebug()<<musicPlayer->errorString();