如何将boost信号传递给在其他地方使用的函数？

Question

这被定义为一个类的公共成员。

array:3 [▼
  0 => array:5 [▼
    "asset_id" => 2
    "weekam" => 150.0
    "weekpm" => 300.0
    "nonweekam" => 160.0
    "nonweekpm" => 400.0
  ]
  1 => array:5 [▼
    "asset_id" => 1
    "weekam" => 110.0
    "weekpm" => 180.0
    "nonweekam" => 210.0
    "nonweekpm" => 410.0
  ]
  2 => array:5 [▼
    "asset_id" => 4
    "weekam" => 120.0
    "weekpm" => 320.0
    "nonweekam" => 220.0
    "nonweekpm" => 420.0
  ]
]

想要传递这样的信号： -

boost::signals2::signal<void (int, std::string, std::string, int)> sigApp;

使用它： -

Application* newApp = new Application(pSn, &mdCache_, &sigApp);

程序在运行时退出。 我应该如何将升压信号传递给函数？

由于

Answer 1

您不应该传递signal，当信号引发时，您需要“连接”一些回调来调用。例如：

boost::signals2::signal< void(int, std::string, std::string, int) > sigApp;

sigApp.connect([](int a, std::string b, std::string c, int d)
{
    // do something
});

sigApp.connect([](int a, std::string b, std::string c, int d)
{
    // do another thing
});

// raise the event
sigApp(1, "b", "c", 2);

你们已经准备好了。