Is it possible to connect multiple slots to one signal?

I am trying to figure out the best way for a QML object to send out a signal and for many other QML elements to respond to it. Normally, if you create signal mySignal then you have a handler automatically created for you called onMySignal but that handler exists only within the same element that created the signal.

A particularly inelegant solution could be to store an array of QML elements you want updated when a signal occurs, and then in your handler you loop through all those elements and do what you need.

I'd be surprised if there wasn't an easier way. Am I missing an obvious use case of the signal-slot mechanism in QML?

You can use a Connections component in QML to achieve this

The Item with the signal we want to catch:

MyItem {
  id: itemWithSignal

  onMySignal: {
    console.log("I am sending my signal");
  }
}

In another Item we use the Connections component:

MyOtherItem {
  id: itemSomewhereElse

  Connections {
    target: itemWithSignal

    onMySignal: {
      console.log("itemWithSignal just emitted its signal!");
    }
  }
}

You can also use connect() in QML so it would be something like this:

MyOtherItem {
  id: itemSomewhereElse

  onMyOtherSignal: {
    console.log("My signal is connected!");
  }

  Component.onCompleted: {
    itemWithSignal.mySignal.connect(itemSomewhereElse.myOtherSignal);
  }
}