Callbacks vs signal - slot : rQt5

Signal 과 Slot - Ziks signal and slot Signals and slots are used for communication between objects The signals and slots mechanism is a central feature of Qt and probably the part that differs the signal and slot Each signal function can have an arbitrary number of parameters The signals are connected to slots, which can be either free functions, member functions or

signal and slot in qt 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