This document discusses best practices in Qt Quick/QML. The keyword 'virtual' enables the object orientated concept of dynamic binding. It covers the building blocks of QML like QObject and QQuickItem which inherit from. Signals and slots. finishEditing() is connected to doneButton, and emits the editingFinished() signal. The editTodo() slot is called by Window when a todo item should be edited. Dynamic. . The book needs about two hundred more pages explaining examples and critical subjects like slot-signal interactions, layouts and many of the widgets more. Qt uses object-oriented memory management where objects are deleted automatically when their parent object is deleted. Therefore the virtual slots of Qt classes are helpful. 2. } public slots: void hideEverythingButA1AndChildren() { hideThem =!hideThem; // Now we set up the proxy source mappings emit. # [HOST] # [HOST] """ SLOT que guarda el index del.