How to create and use C++ objects in QML Javascript

Question

My app uses both c++ and QML.

I\'ve defined several objects in C++ part to access SQL etc.

It looks like:

Answer 1

You can use

QQmlApplicationEngine engine;
engine.globalObject().setProperty("CppCreator", engine.newQObject(&CppCreator::GetInstance()));

CppCreator is an QObject to create other c++ object

Q_INVOKABLE QObject* Create(const QString& type_name);

Then you can create c++ object in qml js like

var test = CppCreator.Create("Your Type");

It is not perfect but satisfied my requirement. Hope it helps you.