동시 프로그래밍에서 C++ 함수의 이벤트 중심 메커니즘은 무엇입니까?

void RegisterEventCallback(const std::function& callback) {
  // 将 callback 添加到回调函数列表
}

RegisterEventCallback([]() {
  std::cout << "事件发生了！" << std::endl;
});

RegisterEventCallback([] {
  std::cout << "事件发生了！" << std::endl;
});

#include 
#include 
#include 

class Button {
public:
  using ButtonCallback = std::function;

  Button(const std::string& name)
    : name_(name) {}

  void Click() {
    for (const auto& callback : callbacks_) {
      callback(this);
    }
  }

  void AddClickCallback(const ButtonCallback& callback) {
    callbacks_.push_back(callback);
  }

private:
  std::string name_;
  std::vector callbacks_;
};

class GUI {
public:
  GUI() {
    // 创建两个按钮
    buttons_.push_back(std::make_unique("Button 1"));
    buttons_.push_back(std::make_unique("Button 2"));
  }

  void Run() {
    // 注册按钮点击回调
    buttons_[0]->AddClickCallback([](Button* btn) {
      std::cout << "Button " << btn->GetName() << " clicked!" << std::endl;
    });
    buttons_[1]->AddClickCallback([](Button* btn) {
      std::cout << "Button " << btn->GetName() << " clicked!" << std::endl;
    });

    // 模拟按钮点击事件
    buttons_[0]->Click();
    buttons_[1]->Click();
  }

private:
  std::vector> buttons_;
};

int main() {
  GUI gui;
  gui.Run();
  return 0;
}