Signal QQmlEngine::quit() emitted, but no receivers connected to handle it.

[Brian Wigginton]

I'm helping out on the limetext project (http://limetext.org) and can't seem to get cmd+q to work properly with our QML frontend. When I hit cmd+q I get the following log message:

Signal QQmlEngine::quit() emitted, but no receivers connected to handle it.

I did a search on this list and did find a thread from 2013 that mentioned being able to use something like the following:

 engine.On("quit", func() {
     log.Debug("app should quit")
 })

Unfortunately, it doesn't seem to catch the signal and I get the same logging message above. Am I missing something simple? Here is a link to the area and the engine that I've hooked up to. Just imagine the above code sample put exactly on the following line:

https://github.com/limetext/lime/blob/9cf49525ea67d92db8f09d5a9a214b2b294c97f4/frontend/qml/qml_frontend.go#L297

Thanks all,

-Brian

Also, if any of you go-qml devs are interested in helping out on an open source project, come check out lime text! We're fairly active on the gitter chat also.

[Gustavo Niemeyer]

Hi Brian,

The logic you mention of hooking up on the quit signal still works for me.

You can easily test it by putting this content in a file:

    import QtQuick 2.0
    Item { Component.onCompleted: Qt.quit() }

And then loading it with example/qmlscene:

    ./qmlscene quit.qml

This should work fine. If I comment out the engine.On("quit", ...) logic in qmlscene.go, I get the same error you describe:

    $ ./qmlscene quit.qml
    2015/02/26 01:26:19 qqmlengine.cpp:1756: Signal QQmlEngine::quit() emitted, but no receivers connected to handle it.

and the process won't exit.

Can you please try it out with the sample, and investigate how it differs from the failing environment?

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gustavo @ http://niemeyer.net