Getting Qt's signalslot mechanism in standard C++

signal slot   Dan signal and slot

At the core of the signal-slot mechanism are the queues that are used to pass messages between processes Python provides a default implementation

A slot is called when a signal connected to it is emitted Slots are normal C++ functions and can be called normally; their only special feature is that signals 〇: Can be installedoperates within the signal range of the expansion slot; ×: Cannot be installeddoes not function PCI Express bus

slot machine burning hot The signal-slot mechanism is a way to implement the observer pattern Roughly, the idea is to allow subscription of callback functions to an Slot Arguments Signals can propagate arguments to each of the slots they call For instance, a signal that propagates mouse motion