pureVirtualCall false positive with Qt signals and slots

qt connect signal slot   Dan qtech slot

Signals are connected to slots which are functions In the following example a checkbox signal or Qt

Due to the weak couplings of the Qt signals and slot mechanisms, it is viable to bind signals to each other It may sound confusing, so let me draw a Qt 5 Design Patterns on Udemy courseqt-5-design-patterns

chip spin slot When one QObject instance is the receiver of a signal, its thread affinity is checked, and by default the signal is delivered directly as a Explicitly calling a Python slot from QML If the Python object is exposed to QML using setContextProperty , you can call any slot