Prefer to use normalised signalslot signatures

Thread: Issue when passing a pointer to a SLOT from a SIGNAL with signal and 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 signal and slot Here we have tried a signal-slot link The aim of these two lines of code is when the button is pressed the text of the label

signal and slot arguments are not compatible Slot Arguments Signals can propagate arguments to each of the slots they call For instance, a signal that propagates mouse motion