MFC Dll与COM接口 [英] MFC Dll with COM Interface

问题描述

我非常喜欢管理/非管理互操作性和COM概念。

我收到了一个使用COM Interop的建议，用于在C＃中使用我现有的MFC代码。但是我的问题是，我有一个不是一个有效的COM组件的MFC Dll。如何使这个MFC DLL具有可以在.NET中使用的COM可访问接口？

解决方案

从线程在C＃Windows应用程序中加载MFC DLL

要从C＃访问本地代码，您有几个选择。最直接的是，您可以使用DllImportAttribute以C＃方式描述DLL的入口点，以便通过P / Invoke调用它们。他们将看起来像静态方法到您的C＃程序。

直接减少，您可以创建一个托管的C ++程序集，将您的DLL包装在一个或多个托管对象中。可以通过添加引用从C＃访问Managed C ++ DLL（因为它是具有.dll扩展名的托管程序集），并且还可以使用#include来访问MFC DLL，以包含MFC DLL的头文件。

第三个选项是将你的dll变成一个COM对象，以便你的C＃程序可以这样访问。

I am pretty new to managed/unmanaged interoperability and COM concepts.

I received a suggestion of using COM Interop, for using my existing MFC code in C#. But the problem for me is, i have a MFC Dll which is not a valid COM component. How can I make this MFC DLLs to have COM-accessible interfaces ready for use in .NET?

解决方案

From thread Loading MFC DLL in C# Windows Application

To access native code from C# you have a few choices.

Most directly, you can use DllImportAttribute to describe your DLL's entry points in C# terms so that they can be called via P/Invoke. They'll look like static methods to your C# program.

Less directly, you can create a Managed C++ assembly that wraps your DLL in one or more managed objects. The Managed C++ DLL can be accessed from C# via Add Reference (because it is a managed assembly with a .dll extension) and should also be able to access your MFC dll by using #include to include the MFC dll's header file.

A third option would be to turn your dll into a COM object so that your C# program can access it that way.

这篇关于MFC Dll与COM接口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！