从C ++ DLL触发C＃中的事件 [英] Triggering event in C# from C++ DLL

问题描述

我有一个与思科服务器（UCCX）进行通信的umanaged C ++ DLL。

它通过TCP / IP向本服务器发送和接收消息。现在有一些类型的消息，它包含一些需要发送到C＃GUI的参数，这些参数将在屏幕上显示这些参数。

请告诉我一个有效的从这个DLL触发C＃中的事件的方法。

解决方案

http://blogs.msdn.com/b/davidnotario/archive/2006/01/13/512436.aspx 似乎回答你的问题。您在C＃方面使用一个代理，并在C ++方面使用标准回调。

C ++边：

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

C＃边

 code> public delegate void MyCallback（）; 
 [DllImport（MYDLL.DLL）] public static extern void MyUnmanagedApi（MyCallback callback）; 
 
 public static void Main（）
 {
 MyUnmanagedApi（
 delegate（）
 {
 Console.WriteLine（被非托管调用侧）; 
} 
）; 
} 
  

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

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.

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

解决方案

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++ side:

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

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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