Unsolved 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?