Connection between Signals and Slots

An example of a combiner that processes arguments before passing them to a slot and can determine whether to continue calling subsequent slots

Signals/Slots, you can associate multiple Slots with Signals, when Signals generate signals, Slots will be called in turn

An example of a combiner to get the sum of the return values of all slots

Create a slot by a function

The combiner is used to obtain the return value of the slot, and to determine whether to continue calling subsequent slots

Signals/Slots, you can associate multiple Slots with Signals, when Signals generate signals, Slots will be called in turn