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How it works...

QML is designed in such a way that it can be expanded through C++ code. The classes in the Qt QML module permit QML objects to be used and operate from C++, and the capability of the QML engine's united with Qt's meta-object system allows C++ functionality to be called directly from QML. To add some C++ data or usage to QML, it should come forward from a QObject-derived class. QML object types could be instituted from C++ and supervised to access their properties, appeal their methods, and get their signal alerts. This is possible because all QML object types are executed using QObject-derived classes, allowing the QML engine to forcibly load and inspect objects through the Qt meta-object system.

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