Connections QML Type

Describes generalized connections to signals. More...

• List of all members, including inherited members

Properties

• enabled : bool
• ignoreUnknownSignals : bool
• target : QtObject

Detailed Description

A Connections object creates a connection to a QML signal.

When connecting to signals in QML, the usual way is to create an "on<Signal>" handler that reacts when a signal is received, like this:

MouseArea {
    onClicked: (mouse)=> { foo(mouse) }
}

However, it is not possible to connect to a signal in this way in some cases, such as when:

• Multiple connections to the same signal are required
• Creating connections outside the scope of the signal sender
• Connecting to targets not defined in QML

When any of these are needed, the Connections type can be used instead.

For example, the above code can be changed to use a Connections object, like this:

MouseArea {
    Connections {
        function onClicked(mouse) { foo(mouse) }
    }
}

More 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) { foo(mouse) }
}

See also Qt Qml.

Property Documentation