Because I can't. The QML engine is loading, creating the objects. There is nothing I can return to.
Its like I want to create the event loop, init, then hand the app.exec() pick up the events already queued in the event loop... > Sent: Thursday, April 11, 2019 at 3:20 AM > From: "Tony Rietwyk" <t...@rightsoft.com.au> > To: interest@qt-project.org > Subject: Re: [Interest] Signals, slots before the event loop starts? > > Hi Jason, > > Why can't your initialisation pass back a status to the main routine? > > Otherwise I suggest to use a short timer, so it gets picked up early > when the main event loop starts. > > Hope that helps, Tony > > > On 11/04/2019 8:18 am, Jason H wrote: > > I've now come across two places in my code where this is an issue (at > > various states of initializing) > > > > In a QObject who is exported to QML, and is instantiated just below the > > top-level Window: > > // in the object's open() method: > > if (!_serialPort.open(QIODevice::ReadWrite)) > > qApp->quit(); // won't actually quit - no use if I can't use the serial > > port. (because another instance is using it) > > > > Then I have a ready() signal that is emitted when the serial device is > > ready, however the QML, when I hook onReady, it never gets called. I have > > to use a Component.onCompleted at the top level. However, there is async > > serial I/O happening, so there is at least one event loop? > > > > What can I do to make sure these things work? > > > > > > > > > > _______________________________________________ > > Interest mailing list > > Interest@qt-project.org > > https://lists.qt-project.org/listinfo/interest > _______________________________________________ > Interest mailing list > Interest@qt-project.org > https://lists.qt-project.org/listinfo/interest > _______________________________________________ Interest mailing list Interest@qt-project.org https://lists.qt-project.org/listinfo/interest
