QMediaPlayer doesn't start

AndreasKwd

Hello,

I'm trying to create an instance of QMediaPlayer, but I always get an error in runtime.

QMediaPlayer	player;

I get the error message:

The inferior stopped because it recieved a signal from the
operating system.

Signal name: ?
Signam meaning: Unknown signal

OS: aktuelles Windows 10

QT:
Qt Creator 4.14.0
Based on Qt 5.12.2 (MSVC 2019, 64 bit)

the .pro file contains:
QT += core gui multimedia

Has anybody an idea or coult help please?

Thanks and regards
Andreas

Christian Ehrlicher

Please show some code. We can't know what you're doing without it...

AndreasKwd

void WndTemplBase::PlaySound(QString    _sFilename)
{
    // the following line causes the runtime error!
    m_pPlayer  = new QMediaPlayer;       // member variable

    QUrl   urlTitle = QUrl::fromLocalFile(_sFilename);

    m_pPlayer->setMedia(urlTitle);
    m_pPlayer->setVolume(50);
    m_pPlayer->play();
}

Christian Ehrlicher

@AndreasKwd said in QMediaPlayer doesn't start:

m_pPlayer = new QMediaPlayer;

So you create a new QMediaPlayer every time PlaySound() is called? This doesn't look right.

AndreasKwd

No, I create it in the constructor. I just wanted to make it easier.
The full code is:

void WndTemplBase::WndTemplBase()
{
    // the following line causes the runtime error!
    m_pPlayer  = new QMediaPlayer;       // member variable
}

void WndTemplBase::~WndTemplBase()
{
    delete m_pPlayer;
}

void WndTemplBase::PlaySound(QString    _sFilename)
{
    QUrl   urlTitle = QUrl::fromLocalFile(_sFilename);

    m_pPlayer->setMedia(urlTitle);
    m_pPlayer->setVolume(50);
    m_pPlayer->play();
}

Christian Ehrlicher

Strange. Where do you instantiate WndTemplBase?
What Qt version and OS do you use?