[Interest] [QQuickView] deadlock on exit

[Tim Blechmann]

>> not sure, if i am doing something completely wrong here.
>> i'm using a QMainWindow with a QQuickView as central widget. the
>> application does not make use of QApplication::exec, but i'm polling the
>> event loop manually from the application.
> 
> You're doing something wrong. Use exec().

fwiw, the winmigrate solution does not use exec() either [1], but calls
qApp->sendPostedEvents() from the host application. i know that
winmigrate is broken in vanilla-qt-5.2, because QMfcApp::pluginInstance
creates a QApplication via

(void)new QApplication(argc, 0);

which causes an assertion failure in QCoreApplication::arguments() [2].
but if using QApplication without exec() is unsupported, maybe this
could be either fixed or removed or declared as unsupported?

thanks,
tim

[1]
https://qt.gitorious.org/qt-solutions/qt-solutions/source/80592b0e7145fb876ea0e84a6e3dadfd5f7481b6:qtwinmigrate/src/qmfcapp.cpp#L106
[2] https://bugreports.qt-project.org/browse/QTBUG-30330