Re: [Interest] How to set QtQuickControls Slider to an initial value without modifying the current saved?

[Nurmi J-P]

> On 16 Oct 2014, at 17:39, Nuno Santos <nunosan...@imaginando.pt> wrote:
> 
> Hi,
> 
> I’m using Slider from QtQuickControls and i’m facing a problem. I initialise 
> the value with a value saved on settings. However, when the slider is 
> instantiated, it is triggering onValueChanged with the default min value. The 
> setting is being correctly saved because I don’t show the slider right away. 
> Only when the slider is show, this is happening and I see the result of the 
> change in settings. 
> 
> Slider {
>    width: parent.width
>    height: 10
>    minimumValue: 60
>    maximumValue: 180
>    stepSize: 1
>    updateValueWhileDragging: true
>    value: settings.trackWidth
>    onValueChanged: {
>        console.log("track width value changed: " + value)
>        settings.trackWidth = value
>    }
>    Component.onCompleted: {
>        console.log("track width on completed: " + settings.trackWidth)
>        value = settings.trackWidth
>    }
> }
> 
> Console:
> 
> qml: track width value changed: 60
> qml: track width on completed: 60
> 
> Any ideas?


Hi,

How about:

import QtQuick 2.3
import QtQuick.Controls 1.2
import Qt.labs.settings 1.0

ApplicationWindow {
    width: 320
    height: 200
    visible: true

    Settings {
        id: settings
        property alias sliderValue: slider.value
    }

    GroupBox {
        title: slider.value
        Slider {
            id: slider
            stepSize: 1
            minimumValue: 60
            maximumValue: 180
            anchors.centerIn: parent
        }
    }
}

http://qt-project.org/doc/qt-5/qml-qt-labs-settings-settings.html

--
J-P Nurmi

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