this is a simple example to show how send an object to qml from a QObject based calss in c++

SendObjectToQml.cpp

#include <QGuiApplication>
#include <QQmlApplicationEngine>
#include <QtQml/QQmlContext>

#include "YourClass.h"

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


QQmlApplicationEngine engine;
QQmlContext* context = engine.rootContext();

YourClass yourObject;
context->setContextProperty("yourQmlObject",&yourObject);
QQmlApplicationEngine engine;
	engine.load(QUrl(QLatin1String("qrc:/main.qml")));
	if (engine.rootObjects().isEmpty())
	return -1;

	return app.exec();
}