What do I do if a slot is not invoked?

Since the signatures are compatible, the compiler can help The rule about whether to include arguments or not in the SIGNAL() and SLOT

First, it allows the compiler to check that the signal's arguments are compatible with the slot's arguments Arguments can also be implicitly converted by the

signal and slot qt signal, will occur The connect() method connects the signal to the slot In arguments from the command line and is passed to that method when the

signal slot Since the signatures are compatible, the compiler can help The rule about whether to include arguments or not in the SIGNAL() and SLOT