如何注册Qt C++对象以在QML中使用它

#include <QObject>

class MyObject : public QObject
{
    Q_OBJECT
    // 添加需要在QML中访问的属性和方法
};

#include <QObject>

class MyObject : public QObject
{
    Q_OBJECT
    Q_PROPERTY(QString text READ getText WRITE setText NOTIFY textChanged)
    
public:
    QString getText() const;
    void setText(const QString& text);
    
signals:
    void textChanged();
};

QString MyObject::getText() const
{
    return m_text;
}

void MyObject::setText(const QString& text)
{
    if (m_text != text) {
        m_text = text;
        emit textChanged();
    }
}

#include <QGuiApplication>
#include <QQmlApplicationEngine>
#include "myobject.h"

int main(int argc, char *argv[])
{
    QGuiApplication app(argc, argv);
    
    qmlRegisterType<MyObject>("com.example", 1, 0, "MyObject");
    
    QQmlApplicationEngine engine;
    engine.load(QUrl(QStringLiteral("qrc:/main.qml")));
    
    return app.exec();
}

import com.example 1.0

MyObject {
    id: myObject
    text: "Hello World"
    
    // 可以访问MyObject的属性和方法
}