QtQuick - C++ Connections item reported in QML

Hello everyone

QtQuick has a connection element for access to C++ in QML signals and manage. It looks like this:

{Of connections
target: live
onLiveUpdateStarted: {}
Console.Debug ("onLiveUpdateStarted qml")
updatingLiveData.running = true
updatingLiveData.visible = true
}
onLiveUpdateFinished: {}
Console.Debug ("onLiveUpdateFinished qml")
updatingLiveData.running = false
updatingLiveData.visible = false
}
}

'live' where is defined through main.cpp: viewer.rootContext ()-> setContextProperty ('live', live);

How can I make this connection with stunts like connections does not seem to be available.

Best regards

Sebastian

In fact the connections item is always available, but you need to 'import QtQuick 1.0"first to enter namespace.  At this point, because it is not a visual node, you also need to place it in a list of attachedObjects instead of just came out with the rest of the content page as you have Qt QML.

Is not necessary, however. Another option that requires no setting in QtQuick is to make direct connections to signals, something like this:

onCreationCompleted: {
    live.liveUpdateStarted.connect(someFunction);
    live.liveUpdateFinished.connect(someOtherFunction);
}

Then, you would obviously regular JavaScript (for example, someFunction) functions with the same content as the managers that you have demonstrated.

Tags: BlackBerry Developers

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