I am confused about the communication between Qt and QML

[xhsoldier]

several questions:

1. In QML how to call function in Qt C++?

2. In QML how to connect signal to Qt C++ slots?

3. In Qt C++ how to manage the QML element? For example, change the property of the item, create the item dynamically?

4. In Qt C++ how to connect signal to QML slots?

5. In Qt C++ how to call functions in QML?

Sorry, I am new to QML, but these topic is very important for implementing the application. In General, the question is the communication methods between Qt C++ and QML.

[Eddy]

Have you found "this wiki":http://developer.qt.nokia.com/wiki/Category:Developing_with_Qt::Qt_Quick?

Especially the datasharing topic should interest you there.

[diro]

For QML to call C++ function is in the tutorial.
http://doc.qt.nokia.com/latest/qml-extending-tutorial-index.html

For C++ to manage QML, it would be a bit complex, the main concept is MetaObject
Call function:
http://www.lothlorien.com/kf6gpe/?p=309

Property:
http://stackoverflow.com/questions/5709820/communication-between-c-and-qml

[xhsoldier]

I am now quite clearly. In all, there are three basic methods:

1. through signal/slot
2. Invokable method
3. property change

[andre]

All these are very closely related:

Slots are invokable methods (though not the other way around), and property changes must have a notification signal in order to work. Often, the setter methods of a property are even defined as slots.