main.cpp

#include <QGuiApplication>
#include <QQmlApplicationEngine>
#include "painteritem.h"
#include "imageanalyzer.h"
#include <QQmlContext>
int main(int argc, char *argv[])
{
#if QT_VERSION < QT_VERSION_CHECK(6, 0, 0)
    QCoreApplication::setAttribute(Qt::AA_EnableHighDpiScaling);
#endif
    QGuiApplication app(argc, argv);

    QQmlApplicationEngine engine;

    qmlRegisterType<PainterItem>("Painter",1,0,"PainterItemQml");
    ImageAnalyzer imageAnalyzer;
    engine.rootContext()->setContextProperty("imageAnalyzer", &imageAnalyzer);
    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();
}