warning with qml

[A Former User]

I write a connect between a circular gauge created with qml and a slider, and the signal is sent by the slider..it works but I have these warnings:

qrc:/Slider.qml:86:5: QML Connections: Cannot assign to non-existent property "onSliderMoved"
qrc:/Slider.qml:78:5: QML Connections: Cannot assign to non-existent property "onTextChanged"
qrc:/Slider.qml:34:7: Unable to assign QQuickAnchorLine to QQuickItem*
qrc:/Slider.qml:79: ReferenceError: yourObject is not defined
qrc:/Slider.qml:87: ReferenceError: yourObject1 is not defined
qrc:/Slider.qml:34:7: Unable to assign QQuickAnchorLine to QQuickItem*
qrc:/Slider.qml:79: ReferenceError: yourObject is not defined
qrc:/Slider.qml:34:7: Unable to assign QQuickAnchorLine to QQuickItem*

[ODБOï]

hi
@vale88

can you show us the content of Slider.qml, is "Slider.qml" a file created by you ? It should not, When you create your own Components don't use existing QML Type names.

[A Former User]

@LeLev

import QtQuick 2.6
import QtQuick.Controls 2.1
import QtQuick.Extras 1.4
import QtQuick.Controls.Styles 1.4

Rectangle{
    id: rectangle

    width:200

    height: 130




    color: "#f0f0f0" //setto il colore dello sfondo
    transformOrigin: Item.Left


    CircularGauge{

        id: circularGauge
        x: 0
        y: 29
        width: 200
        height: 150
        anchors.verticalCenterOffset: 48
        anchors.rightMargin: 0
        anchors.topMargin: 31
        anchors.verticalCenter: parent.verticalCenter
        anchors.top: parent.top
        anchors.right: parent.right

      anchors.centerIn: parent.bottom

             minimumValue : -30
             maximumValue : 30
             style: CircularGaugeStyle
             {
                 minimumValueAngle : -90
                 maximumValueAngle  : 90



                 foreground: Item
                {

                 }

                 tickmark:Rectangle
                 {
                    // visible: styleData.value
                     implicitWidth: outerRadius * 0.02
                   antialiasing:true
                     implicitHeight: outerRadius * 0.05

                     color: "Black"
                 }
                 minorTickmark: Rectangle
                 {
                         //visible: styleData.value
                         implicitWidth: outerRadius * 0.01
                         antialiasing: true
                         implicitHeight: outerRadius * 0.03
                         color: "Black"
                 }



                 tickmarkLabel:Text
                 {
                     color:"Black"

                     text : styleData.value
                 }
             }
         }
    Connections {
      target: yourObject
     onTextChanged:
        if (yourObject.text == "")
            circularGauge.value=-30
         else {circularGauge.value = yourObject.text}

    }
    Connections {
      target: yourObject1
      onSliderMoved: circularGauge.value = (position/10)- 30
    }


}

[ODБOï]

qrc:/Slider.qml:34:7: Unable to assign QQuickAnchorLine to QQuickItem* is because of :

anchors.centerIn: parent.bottom  

qrc:/Slider.qml:87: ReferenceError: yourObject1 is not defined because there is no object width

id : yourObject1 

in your qml file.
Where are declared yourObject1 and yourObject ?

[A Former User]

@LeLev I wrote in mainwindow.cpp:

 //carico il file qml
    ui->Slider_Calib->setSource(QUrl("qrc:///Slider.qml"));

    //connect circularGauge e slider
    ui->Slider_Calib->engine()->rootContext()->setContextProperty("yourObject1",ui->horizSlider_Calib);

    //connect circularGauge e text

 ui->Slider_Calib->engine()->rootContext()->setContextProperty("yourObject",ui->Value_TavRotante_Calib);

[ODБOï]

hi
@vale88 said in warning with qml:

I wrote in mainwindow.cpp:

where exactly in mainwindow.h ? can you please show the full method ?

Im non at all experienced with widgets but if your code is working that mean this is only object creation timing issue,
try to call setSource() after setContextProperty()

    //connect circularGauge e slider
    ui->Slider_Calib->engine()->rootContext()->setContextProperty("yourObject1",ui->horizSlider_Calib);

    //connect circularGauge e text

 ui->Slider_Calib->engine()->rootContext()->setContextProperty("yourObject",ui->Value_TavRotante_Calib);
//carico il file qml
    ui->Slider_Calib->setSource(QUrl("qrc:///Slider.qml"));

[A Former User]

@LeLev thanks, I tried and it works...only a warning remains:

qrc:/Slider.qml:34:7: Unable to assign QQuickAnchorLine to QQuickItem*

[ODБOï]

@vale88 good
as i said earlier the last error is because you do this

anchors.centerIn: parent.bottom  

changeit to anchors.centerIn: parent .bottom if you just want to center it

[A Former User]

@LeLev thanks it works