[PyQt] Custom QQuickWindow crashes when created from QML with PyQt 5.8/Qt 5.8

Phil Thompson phil at riverbankcomputing.com
Fri Feb 24 16:27:26 GMT 2017

On 20 Feb 2017, at 4:33 pm, Arjen Hiemstra <a.hiemstra at ultimaker.com> wrote:
> Hi,
> I have attached a minimal test case that crashes when run. The code exposes a 
> custom QQuickWindow subclass to QML, then uses QML to instantiate it. I have 
> also attached a C++ file which does the same thing as the Python code, but does 
> not crash. The same code also works fine when run with PyQt 5.7.1/Qt 5.7.

Should be fixed in tonight's snapshot. The problem was caused by a change in the Qml internals in Qt v5.8.0. I'd recommend people test as much as possible in case there are other similar issues.


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