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[Christoph Willing <c.willing@xxxxxxxxx>]

I'm trying to use libmosquitto to incorporate messages from a  
subscriber into another half written app which uses the Qt framework  
and so already has its own event loop. Can anyone share code which  
shows how to combine event loops (in particular QApplication's event  
loop)?

So far I've tried combining them like this (adding QApplication events  
into mosquitto's event loop):
        while(!mosquitto_loop(mosq, -1)){
                a.processEvents(); //process other non-mosquitto events
        }

but the "other events" involve a QPainter which now complains about  
being invoked outside of its native PaintEvent (at least I think thats  
what the error is telling me).


An alternative to incorporating Qt events into the mosquitto event  
loop would be to incorporate mosquitto events into Qt's event loop  
(googling suggests either QAbstractEventDispatcher or QSocketNotifier  
as possibilities to do it). However that probably entails  
reimplementing much, or all, of the existing libmosquitto(pp) - not  
sure if I'm up to that ...


Does anyone have insights about this? Example code even?


chris