How to access Qlist of structure elements in QML

Praveen.Illa

Hi Team,

How can I access Qlist of struct elements in QML.
I have implemented as follows, but the output is not working as expected.
Can some one please help me how to get the values of qlist struct elements in qml

sample.cpp

#include "sample.h"

int xVal[5] = {1,2,3,4,5};
int yVal[5] = {6,7,8,9,10};

Sample::Sample(QObject *parent) : QObject(parent)
{

}

void Sample::prepareList()
{
    listOfObjects obj;

    for(int iLoop = 0; iLoop < 5; iLoop++)
    {
        obj.xVal = xVal[iLoop];
        obj.yval = yVal[iLoop];

        listObj.append(obj);
    }
}

QVariant Sample::getList()
{
    return QVariant::fromValue(listObj);
}

sample.h

#ifndef SAMPLE_H
#define SAMPLE_H

typedef struct
{
    int xVal;
    int yval;
}listOfObjects;
Q_DECLARE_METATYPE(listOfObjects);

class Sample : public QObject
{
    Q_OBJECT
public:
    explicit Sample(QObject *parent = nullptr);

    Q_PROPERTY(QVariant varlist READ getList)

public slots:
    void prepareList();
    void printList();


private:
    QList<listOfObjects> listObj;
    QVariant getList();
};

#endif // SAMPLE_H

main.cpp

int main(int argc, char *argv[])
{
    QCoreApplication::setAttribute(Qt::AA_EnableHighDpiScaling);

    QGuiApplication app(argc, argv);

    QQmlApplicationEngine engine;

    qmlRegisterType<Sample>("Sample", 1, 0, "SampleObj");

    const QUrl url(QStringLiteral("qrc:/main.qml"));
    QObject::connect(&engine, &QQmlApplicationEngine::objectCreated,
                     &app, [url](QObject *obj, const QUrl &objUrl) {
        if (!obj && url == objUrl)
            QCoreApplication::exit(-1);
    }, Qt::QueuedConnection);
    engine.load(url);

    return app.exec();
}

main.qml

import QtQuick 2.12
import QtQuick.Window 2.12

import Sample 1.0

Window {
    id: mainWindow
    visible: true
    width: 640
    height: 480
    title: qsTr("Hello World")

    property var obj: ({})

    SampleObj {
        id: sampleId
    }

    Component.onCompleted: {
        sampleId.prepareList()
        obj = sampleId.varlist

        for(var i = 0; i < obj.length; i++) {
            console.log(obj[i]) //Expected: console.log("(x, y) = " + obj[i].xVal, obj[i].yVal )
        }
    }
}

The console log is giving the outputs as
qml: QVariant(listOfObjects, )
qml: QVariant(listOfObjects, )
qml: QVariant(listOfObjects, )
qml: QVariant(listOfObjects, )
qml: QVariant(listOfObjects, )