QWebEngineView Mouseover crashing on debug

adviner

I basically just initialize the class and add it to a vertical QSplitter. When I move the mouse over it is when I get the error:

this->webView = new QWebEngineView();
    QSplitter *searchSplitter = new QSplitter(Qt::Vertical, this->widgetSearchResult);
    searchSplitter->addWidget(this->webView);

Error I get is Screen shot

https://drive.google.com/file/d/0BwXCsqWT3wkXTWFwSmMtcm1Eb2s/view

When I look at the source code of web_event_factory.cpp I see that the error is landing on the Q_ASSERT(false);

static WebInputEvent::Type webEventTypeForEvent(const QEvent* event)
{
    switch (event->type()) {
    case QEvent::MouseButtonPress:
        return WebInputEvent::MouseDown;
    case QEvent::MouseButtonRelease:
        return WebInputEvent::MouseUp;
    case QEvent::Enter:
        return WebInputEvent::MouseEnter;
    case QEvent::Leave:
        return WebInputEvent::MouseLeave;
    case QEvent::MouseMove:
        return WebInputEvent::MouseMove;
    case QEvent::Wheel:
        return WebInputEvent::MouseWheel;
    case QEvent::KeyPress:
        return WebInputEvent::RawKeyDown;
    case QEvent::KeyRelease:
        return WebInputEvent::KeyUp;
    case QEvent::HoverMove:
        return WebInputEvent::MouseMove;
    case QEvent::TouchBegin:
        return WebInputEvent::TouchStart;
    case QEvent::TouchUpdate:
        return WebInputEvent::TouchMove;
    case QEvent::TouchEnd:
        return WebInputEvent::TouchEnd;
    case QEvent::TouchCancel:
        return WebInputEvent::TouchCancel;
    default:
        Q_ASSERT(false);
        return WebInputEvent::MouseMove;
    }
}

Is there a way to disable Q_ASSERT(false) in debug mode?

koahnig

@adviner

I have added code tags in your post.

The only thing I know you probably already found is using QT_NO_DEBUG, but this would require a recompilation of whole Qt and you would have at least not all debug information.

You may want to check on JIRA for a bug report and report it, if not already done.

Any idea of the actual event reported?
Possibly you may want to do a complete rebuild of your application in case there was a flaw in compilation and a mixup of whatever.
Can you produce a small example reproducing the problem?

Do you see this also with previous versions of Qt?

In case you find or file information on JIRA, please provide a link for others to be able to find the report easier.

SGaist

Hi,

What version of Qt are you using ?

On what platform ?

adviner

Latest version 5.9.1

adviner

Windows 10 Pro 64 Bit. Using Visual Studio 2017

SGaist

What hardware ?

PythonMaster

I found this thread on google.
I checked Jira and saw that there is a fix for the next release.
https://bugreports.qt.io/browse/QTBUG-62200?jql=text ~ "hover qwebengineview"