Understanding the mechanism of signals and slots

Understanding the mechanism of signals and slots signal and slot Slot Arguments Signals can propagate arguments to each of the slots they call For instance, a signal that propagates mouse motion signal slot qt Signalslot connection in sequence diagram · consider data flow is from B to A · consider component_B as the emitter of this signal “S” carrying

signal slot qt To use signals and slots for implementing loose coupling, it must be easy to connect signals and slots that only partially match signatures

signal 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 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，