gistfile1.txt

#include <QGuiApplication>
#include <QQmlApplicationEngine>
#include <QQmlComponent>
#include <QDebug>
#include <QQmlProperty>
#include <QQuickView>

//class MyClass : public QObject
//{
//    Q_OBJECT
//    public slots:
        void cppSlot(QString msg) {
            qDebug() << "Called the C++ slot with message:" << msg;
        }
//};

//int main(int argc, char *argv[]) {
//    QGuiApplication app(argc, argv);

//    QQuickView view(QUrl::fromLocalFile("MyItem.qml"));
//    QObject *item = view.rootObject();

//    MyClass myClass;
//QObject::connect(item, SIGNAL(qmlSignal(QString)),
//                 &myClass, SLOT(cppSlot(QString)));

//    view.show();
//    return app.exec();
//}

int main(int argc, char *argv[])
{
    QGuiApplication app(argc, argv);

    QQmlApplicationEngine engine;
    QQmlComponent component(&engine, QUrl(QStringLiteral("qrc:/main.qml")));
    QObject *object = component.create();

    QObject::connect(object, SIGNAL(textSignal(QString)), void, SLOT(cppSlot(QString)));

//    qDebug() << "Property value:" << QQmlProperty::read(object->children()[0], "text").toInt();

//    engine.load(QUrl(QStringLiteral("qrc:/main.qml")));

    return app.exec();
}


import QtQuick 2.5
import QtQuick.Window 2.2

Window {
    visible: true
    signal textSignal(string msg)
    TextInput {
        property  string input: ""
        property int number: 100
        id: textInput
        text: "Enter your text here"
        onAccepted: parent.textSignal("Hello from qml")
    }
}