Accessing QML Properties when object is instantiated as a quickWidget through QtDesigner

[Jeng22]

I wrote a tumbler module in QML that is setting date/time fields that I would like to access in C++. Originally the project was written using .ui files in QtDesigner, so I incorporated the tumbler module as a quickWidget and set the source url. I tried using different approaches like signals/slots and Q_Properties, but have not found success. Any help would be greatly appreciated as I am relatively new to using Qt!

QML Properties to be accessed:

C++ File

Tumbler Module inserted into .ui file as a quickWidget

I am probably missing some important information, so let me know. Thanks!

[KillerSmath]

@Jeng22

The updateComponent is not directly declared in QQuickWidget, instead of it, QQuickWidget has a item called RootObject that represent the first item on your view.

Beyong that, you must think in hierarchy of your qml file.

1. If the tumbler module is the root object of your widget as below than you can directly access it from rootObject.

• QQuickWidget
  • Root Item

Item{
    // Your properties and signals
}

QObject *item = ui->quickWidget->rootObject();
QObject::connect(item, SIGNAL(updateComponent(QString)), this, SLOT(handleUpdateComponent(QString)));

---

2. On the other hand, if your module is inside of another object than you may set objectName property and find it from rootObject

• QQuickWidget
  • Root Item
    • Inner Item

Item{
    Item{
        objectName: "InnerObject"
       // your properties and signals
    }
}

QObject *item = quickWidget.rootObject()->findChild<QObject *>("InnerObject");
QObject::connect(item, SIGNAL(updateComponent(QString)), this, SLOT(handleUpdateComponent(QString)));

[Jeng22]

@KillerSmath Thanks for the reply! That makes more sense. My object is at root so I went with the first approach.

I got it working now, thanks for the help!