连接C ++和C＃代码用C ++ / CLI桥 [英] Connecting c++ and c# code with a c++/cli bridge

问题描述

我在这是使用原生C ++的DLL本地C ++代码的客户端应用。我调查的连接该代码使用C＃的dll，因为他们会更容易编写的可能性。我决定写这可以用LoadLibrary和其装载会传递到C＃DLL的调用一个C ++ / CLI桥DLL。

I have a client application in native c++ code which is using native c++ dlls. I am investigating the possibility of connecting this code with c# dlls as they would be much easier to write. I decided to write a c++/cli bridge dll which can be loaded with LoadLibrary and which would pass the calls to c# dll.

在客户端和DLL之间的通信是这样，客户端将指针传递到一个接口对象，通过它的DLL然后与客户端通信。我在C ++ / CLI桥接代码这个包裹对象的C＃代码使用它。

The communication between the client and the dll is such that the client passes a pointer to an interface object through which the dll then communicates with the client. I wrapped this object in the c++/cli bridge code for the c# code to use it.

桥还应暴露与__declspec（dllexport）的多种功能，并传递到c＃DLL那些呼叫，因此它需要有一个指针到交流＃接口其所将通过他们。我想用C＃对象与gcroot<>包装，但问题是，我得到这两个DLL之间的循环依赖。 C＃DLL需要引用桥DLL能够使用包装类和桥的DLL需要引用的C＃的DLL使用接口类

The bridge should also expose several functions with __declspec(dllexport) and pass those calls to the c# dll, so it needs to have a pointer to a c# interface to which it would pass them. I wanted to use a c# object with the gcroot<> wrapper, but the problem is that I get circular dependencies between these two dlls. C# dll needs to reference the bridge dll to be able to use the wrapper class and the bridge dll needs to reference the c# dll to use the interface class.

我知道我可以使用COM的替代包装与gcroot C＃的对象，但我宁愿不要。有没有解决这个办法吗？

I know I can use COM instead of wrapping the c# object with gcroot, but I'd rather not. Is there any way around this?

推荐答案

只要定义在C ++ / CLI而不是C＃的接口。这消除了完全的C＃项目的依赖

Just define the interface in C++/CLI instead of C#. This eliminates the dependency on the C# project entirely.

我推荐的C ++ / CLI项目作为只是一个包装的思考 - 不要在那里定义任何新接口。只要看看什么是在当前的C ++代码，并在裁判班把它包起来，以便您可以构建并从C＃调用它们。

I recommend thinking of the C++/CLI project as nothing but a wrapper - don't define any new interfaces in there. Just take what is in the current C++ code, and wrap it in "ref classes" so you can construct and call them from C#.

这篇关于连接C ++和C＃代码用C ++ / CLI桥的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！