从C DLL到.NET接口 [英] Interface from a C DLL to .NET

问题描述

我有一个旧的DLL用C写的，我想从C＃.NET应用程序来调用。问题是，该DLL接口对于C DLL是相当复杂的。这件事情是这样的：

I have a legacy DLL written in C that I'd like to call from a C# .NET application. The problem is that the DLL interface for the C DLL is fairly complicated. It's something like this:

__declspec(dllexport) void __stdcall ProcessChunk(
    void *p_prochdl,
    const BIG_INPUT_STRC *p_inparams,
    BIG_OUTPUT_STRC *p_outparams
);

在BIG_INPUT_STRC / BIG_OUTPUT_STRC包含各种东西......指针缓存阵列，列举的参数，整型参数，等等，总之，他们是复杂的。

The BIG_INPUT_STRC/BIG_OUTPUT_STRC contain all kinds of things... pointers to buffer arrays, enumerated parameters, integer parameters, etc. In short, they're complicated.

第一个问题：有没有一种简单的方法来获得所有这一切都包含在DLL头文件到C＃类的结构信息，或者你需要逐字复制和粘贴一切，C＃和重新定义它？这似乎是多余的。

First question: Is there an easy way to get all of the structure information that is contained in the DLL header file into the C# class, or do you need to literally copy and paste everything to C# and re-define it? This seems redundant.

与此相关的，什么是从C＃传递结构进入非托管的DLL的正确方法？

Related to that, what is the correct way to pass structs into the unmanaged DLL from C#?

最后，有一个如何正确地传递从C＃缓冲区数组到非托管的DLL的例子吗？另外，我怎么能传递一个二维数组到DLL？

Finally, is there an example of how to correctly pass buffer arrays from C# into the unmanaged DLL? Alternatively, how can I pass a two-dimensional array into the DLL?

谢谢， -Greg

推荐答案

它非常直截了当地，使用P做到这一点柔软的东西在C＃/调用。

Its quite straight forward to do this soft of thing in C# using P/Invoke.

我相信，你将不得不手动定义数据结构在C＃。

I belive you are going to have to define the data structures in C# manually.

我会建议你看看这 MSDN文章上主题

I would reccomend you take a look at this MSDN article on the subject

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