Qt 5 C++ – Cơ chế hoạt động của Signal và Slot

Signals and Slots · loose coupling: The key advantage of the signals and slots is that the caller does not have to know anything about the receiver and vice

When a signal is emitted, the slots connected to it are usually executed immediately, just like a normal function call When this happens, the signals and slots

signal and slot Define your own class with Qt signals and slots: To provide a class with its own signals and slots, the following applies Rules to be followed:

signal and slot arguments are not compatible 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