Qml Switch is not updated by model after manual set

[th.thielemann]

In qml I have a Switch connected with a c++ bool

Q_PROPERTY(bool boolValue READ getBoolValue WRITE setBoolValue NOTIFY boolValueChanged)

If I execute the app, the Switch shows the current state of the property. I added a QTimer in c++ to set the boolValue every second. The Qml Switch toggles to. But as soon as I set the Switch in Qml, it does not toggle anymore.
Is this the expected behaviour or an error?

Same behaviour with the following two Switches: Slave follows master until slave was set by the user.

            Switch {
                id: masterSwitch
            }
            Switch {
                id: slave
                checked: masterSwitch.checked
            }

Regards,
Thomas

[Buttink]

@th.thielemann Pretty sure this is expected. You need to say something more like

            Switch {
                id: masterSwitch
                onCheckedChanged: { slave.checked = checked }
            }
            Switch {
                id: slave
            }

Because you destroy your binding when the switch does its own assignment.