Changing the needle angle in CircularGauge

edorval

I am a beginner in Qt Creator, and I am trying to control the angle of the needle in CircularGauge. How would I go about changing this so that a slider can control the value shown by the gauge? My code is below:

import QtQuick 2.6
import QtQuick.Controls 1.4
import QtQuick.Controls.Styles 1.4
import QtQuick.Extras 1.4
import QtQuick.Extras.Private 1.0
import QtQuick.Window 2.2

Rectangle {
x: 0
y: 0
z: -2147483646
width: 350
height: 350
color: "#494d53"

CircularGauge {
    id: circgage
    x: 13
    y: 17
    width: 325
    height: 317
    visible: true
    maximumValue: 80
    z: 2147483645
    style: CircularGaugeStyle {
        needle: Rectangle {
            id: needlepointer
            y: outerRadius * 0.15
            implicitWidth: outerRadius * 0.03
            implicitHeight: outerRadius * 0.9
            antialiasing: true
            color: Qt.rgba(0.66, 0.3, 0, 1)
        }
    }

    Text {
        id: gaugename
        x: 112
        y: 234
        z: 0
        width: 102
        height: 27
        color: "#a9a9a9"
        text: qsTr("Motor RPM")
        horizontalAlignment: Text.AlignHCenter
        lineHeight: 0.6
        renderType: Text.NativeRendering
        font.pixelSize: 20
    }
}

Slider {
    id: controlslider
    x: 76
    y: 363
}

}

ODБOï

@edorval hi
Welcome to Qt world
Qt Creator is the IDE (integrated development environment)

@edorval said in Changing the needle angle in CircularGauge:

slider can control the value shown by the gauge

The CircularGauge has value property. You only need to change it, no need to change angle mannualy
(but you can create your own gauge and do that if you want )

In QML for every property there is a associated on<PropertyName>Changed signal so

Slider {
    id: controlslider
    x: 76
    y: 363
onValueChanged :{ circgage.value = value}
}

why you put z property to -2147483646?

edorval

@LeLev The main reason that I am doing this is so that I can read the sensors and adjust the value shown on the gauge accordingly. I am trying to use the slider to control it for a preliminary demonstration. When I will be using the gauges to their full effects, they will be displaying values outputted by sensors.