[SOLVED]Qml, connect to SIGNAL from component created in parent scope



  • Hello,

    In my main.qml file I create and instance of an object defined in the c++ backend. Further the main.qml file contains a stackview on which views are pushed and popped (from user input or signals from the c++ object). Each view is in its own qml file.

    In the main.qml and the qml files for the different views I can bind to Q_PROPERTY's from the c++ object.

    In the definition of the c++ object in the main.qml I can also connect to Signals from the c++ object.

    But what I can't do is to connect to signlas from the c++ object in on of the child views.

    Some code the clarify
    main.qml
    @ApplicationWindow {
    id: applicationWindow1
    visible: true
    width: 800
    height: 600

    BackendObject
    {
          id: myObject
          onSignalA{stackView.push(Qt.resolvedUrl("ViewA")}   //works
          onSignalB{.....}    //works
          ....
    }
     
    StackView
    {
          initialItem: stackView.push(Qt.resolvedUrl("InitialView")
          ......
    }
    @
    

    The ViewA.qml
    @
    Item
    {
    Text:
    {
    text:myObject.TextProperty //databind to text property (works)
    }

        myObject.onSignalB{... }//this does not work, the entire view is'nt displayed but there is no output in the console
    

    }
    @

    Anybody an idea as on how to solve this?
    (I could create a property and change the property instead of emitting the signal, but that seems like a lot of overhead code).



  • OK, figured this out: a connections items is needed. The update view A will look like this:

    @
    Item
    {
    Text:
    {
    text:myObject.TextProperty //databind to text property (works)
    }

        Connections
        {
             target: myObject
             onSignalB {......}//this works,
    

    }@


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