Qt für C++ Anfänger: Signale und Slots

使用Qt的信号和槽（Signals and Slots）机制有以下好处：松耦合：通过信号和槽，对象之间的通信是松耦合的。发送者不需要知道接收者的具体实现细节，

Abstract: A fundamental property of the Qt framework is the so called signals and slot

signal slot The signals and slots mechanism is type safe The signature of a signal must match the signature of the receiving slot

signal slot qt Example code for singnals and slots writen in c++ using Qt framework - ExecomNordcpp-qt-signal-slot-example