pureVirtualCall false positive with Qt signals and slots

Qt signals and slots for newbies signal slot qt An introductory explanation to Qt Signals and Slots mechanism If you are new to using Qt signal slot Just like a signal, a slot can be connected to as many signals as you want However, there's no such function to disconnect a specific slot from all the signals

signal and slot arguments are not compatible Signals and slots are loosely coupled: A class which emits a signal neither knows nor cares which slots receive the signal Qt's signals and slots mechanism