How to understand connection is lost on qt gamepad?

[firsnur96]

Hi everyone. I have a question about qt gamepad.
I have logitech F310 and im using qt gamepad examples.
When i cut the connection while application is running, there isnt any warning on the screen

How can i understand the connection lost?
Here is my code

```
QLoggingCategory::setFilterRules(QStringLiteral("qt.gamepad.debug=true"));

auto gamepads = QGamepadManager::instance()->connectedGamepads();

if (gamepads.isEmpty())
{
    qDebug() << "Gamepad bağlanamadı!";
    QWidget::setWindowTitle("Gamepad baglanamadı!");
    return;
}

m_gamepad = new QGamepad(*gamepads.begin(), this);
//  qDebug() << m_gamepad->name();
 js_name = m_gamepad->name();
  QWidget::setWindowTitle(js_name);

[Christian Ehrlicher]

Looking at the documentation you will find a signal which is emitted when the connection changes.

[firsnur96]

@Christian-Ehrlicher

connect(m_gamepad, &QGamepad::connectedChanged, [this](bool change) {

    qDebug() << "connection lost" << change;

});

i wrote this but it doesnt work at all

[Christian Ehrlicher]

If the signal is not emitted then it's maybe a bug - create a minimal, reproducible example and create a bug report if you're sure it's not a failure on your side.
But looks like https://bugreports.qt.io/browse/QTBUG-85830 so no need to create a new bug report then.