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How to create and use C ++ objects in QML Javascript
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How to create and use C ++ objects in QML Javascript
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My app uses both c++ and QML.
I've defined several objects in C++ part to access SQL etc.
It looks like:
class MyObject : public QObject
{
Q_OBJECT
public:
MyObject(QObject *parent = 0);
Q_INVOKABLE void someFunction(const QString &query);
};
qmlRegisterType<MyObject>("xxx.xxx", 1, 0, "MyObject");
Ideally, I need to use these objects only in Javascript not in QML.
I tried a lot of examples and read all the documentation but still can't solve my problem.
So my questions:
- How can I instance in Javascript an object defined in C++? I tried
var obj = Qt.createComponent("MyObject");but it seems not works. Is it possible to define new object in normal JS style -var obj = new MyObject;? - How can I access this created object in javascript? I tried obj.someFunction("xxx") but got some error -
TypeError: Property 'someFunction' of object QQmlComponent(0x3605f5c0) is not a function.What I do wrong here? My object derived from QObject, not from QQmlComponent.
Your object isn't a Component, but you can use Qt.createQmlObject instead.
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