从C在C＃中触发事件++ DLL [英] Triggering event in C# from C++ DLL

问题描述

我有与思科服务器（UCCX）通信的umanaged C ++ DLL。

I have an umanaged C++ DLL which is communicating with a Cisco Server (UCCX).

它发送和接收信息，并从其通过TCP / IP此服务器。现在也有一些类型的接收到的消息，其中包含它需要发送到C＃GUI，这将在屏幕上显示这些参数的一些参数。

It sends and receives messages to and from this server via TCP/IP. Now there are some types of messages it receives which contains some parameters which it needs to send to a C# GUI which will display these parameters on screen.

请告诉我一个高效方法来触发此DLL C＃的事件。

Please tell me an efficient method to trigger an event in C# from this DLL.

推荐答案

的 http://blogs.msdn.com/b/davidnotario/archive/2006/01/13/512436.aspx 似乎回答你的问题。你使用C＃的一面，并在C ++侧一个标准的回调委托

http://blogs.msdn.com/b/davidnotario/archive/2006/01/13/512436.aspx seems to answer your question. You use a delegate on the C# side and a standard callback on the C++ side.

C ++端：

typedef void (__stdcall *PFN_MYCALLBACK)();
int __stdcall MyUnmanagedApi(PFN_ MYCALLBACK callback);

C＃侧

C# side

public delegate void MyCallback();
[DllImport("MYDLL.DLL")] public static extern void MyUnmanagedApi(MyCallback callback);

public static void Main()
{
  MyUnmanagedApi(
    delegate()
    {
      Console.WriteLine("Called back by unmanaged side");
    }
   );
}

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