Loop of onChanged

Mick_1

Hello,

I have a little problem that I can't solve.

I have a value that I want to update when I press on my control. So far, no problem but this same value can be updated via other controls. So, I get into a loop between my onChanged and my application crashes...
I simplified my problem with the example below.

Window {
    id: root
    width: 640
    height: 480
    visible: true

    property int myValue: 0

    onMyValueChanged: {
        if (myValue >= 5)
        {
            switch1.checked = true;
        }
        else
        {
            switch1.checked = false;
        }
    }


    Slider {
        id: slider
        x: 350
        y: 212
        stepSize: 1
        to: 10
        value: myValue

        onValueChanged: myValue = value;
    }

    Switch {
        id: switch1
        x: 175
        y: 209
        text: qsTr("Switch")

        onCheckedChanged: {
            if (checked == true)
            {
                myValue += 5;
            }
            else
            {
               myValue -= 5;
            }
        }
    }
}

I want to update my value from two different places while keeping the "Controls" that can also drive it updated.
How can I do this?

Thank you for your help !

fcarney

Don't create logical loops.

Window {
    id: root
    width: 640
    height: 480
    visible: true

    property int myValue: 0

   
    Slider {
        id: slider
        x: 350
        y: 212
        stepSize: 1
        to: 10
        value: myValue

        onValueChanged: myValue = value;
    }

    Switch {
        id: switch1
        x: 175
        y: 209
        text: qsTr("Switch")

        checked: myValue >= 5

        onClicked: {
            if(checked){
                 myValue += 5
            }else{
                 myValue -= 5
            }  
        }     
    }
}

Honestly though, you should have an indicator and 2 separate buttons to increment and decrement. Not sure what you are trying to do here.