如何在QML中调用从C ++创建的对象的方法？

Question

I need dynamically run JavaScript to operate some C++ object from the simulation.

Example:

class CppToQML : public QObject{
    Q_INVOKABLE CppClass* getObj(int i);
    QList<CppClass*> mList;
}

First, i have a CppToQML class which is registed into QML.

qmlRegisterType<CppToQML>("CppToQML", 1, 0, "CppToQML");

The CppClass is created in C++ side and stored in CppToQML mList

class CppClass : public QObject {
    Q_INVOKABLE void sayHello();
}

I am trying to do this in QML javascript:

CppToQML {
    id: cppToQML
}

//javascript
cppToQML.getObj(0).sayHello();

Problem is QML can not recognize CppClass pointer as a data type.

Answer 1

For QML to recognize the class you must register it:

qmlRegisterType<CppClass>("CppToQML", 1, 0, "CppClass");

or:

qmlRegisterType<CppClass>();