Qt5 C++ Signal And Slots With Practical Examples #4

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

signal and slots mechanism needs some kind of metadata about your class to resolve your signals and slots This could have been done partly with the C++

qtech slot In addition to all features provided by Qt the ROOT version supports connecting slots to a class These slots

qt connect signal to slot Qt Signal & Slot implementation is deterministic, but it's using QVariant to box and then unbox values, so there is definitely a performance