Connections QML Type

Enables connecting a QML signal to a handler. More...

• List of all members, including inherited members

Properties

• target : Object

Detailed Description

A Connections object connects a QML signal to a handler.

Usually, QML signals are connected to an "on<Signal>" handler that reacts to the signal whenever it is triggered. Like in the following example:

MouseArea {
   onClicked: { foo(parameters) }
}

However, it is not possible to use the on<Signal> handler in the following cases:

• Adding multiple connections to the same signal
• Creating connections outside the scope of the signal sender
• Connecting to targets that are not defined in QML

In any of these cases, use the Connections type instead.

For example, the earlier example can be modified to use a Connections object, like this:

MouseArea {
    id: mouseArea
    Connections {
        target: mouseArea
        function onClicked(mouse: MouseEvent) { foo(mouse) }
    }
}

Generally, the Connections object can be a child of some object other than the sender of the signal:

MouseArea {
    id: area
}
// ...

Connections {
    target: area
    function onClicked(mouse: MouseEvent) { foo(mouse) }
}

Property Documentation

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