. This document discusses best practices in Qt Quick/QML. 2. The keyword 'virtual' enables the object orientated concept of dynamic binding. Signals and slots. 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. Therefore the virtual slots of Qt classes are helpful. It covers the building blocks of QML like QObject and QQuickItem which inherit from. # [HOST] # [HOST] """ SLOT que guarda el index del. } public slots: void hideEverythingButA1AndChildren() { hideThem =!hideThem; // Now we set up the proxy source mappings emit. finishEditing() is connected to doneButton, and emits the editingFinished() signal. Qt uses object-oriented memory management where objects are deleted automatically when their parent object is deleted.