C# call method from C++ class

Question

I'm trying to integrate with a windows based api using c-sharp and I've run into this issue.

The api sends me a pointer to a struct that holds a bunch of virtual methods

struct CApiInterface
{
   virtual int __stdcall Version(void);
   ...
}

My question is, how can I call methods off this in C#? I'd like to do something like:

CApiInterface _api;

public void Start(CApiInterface* api)
{
_api = api;
}

...

public void SomeOtherMethod()
{
_api.version();
}

I would like to stay out of CLI/C++ if at all possible, if this is even possible to begin with.

AFAIK, unless you want to write a native COM shim, you'll need to use C++/CLI here. — ildjarn, Aug 17 '11 at 22:20

score 2 · Accepted Answer · edited May 23 '17 at 11:47

2

Check out this question for an example of someone else who did the same thing. It seems to revolve around using delegates marked with the UmanagedFunctionPointerAttribute.

edited May 23 '17 at 11:47

Community

1
1

answered Aug 17 '11 at 22:32

Ken Wayne VanderLinde

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I glossed over the `virtual` part, since the question originally was "C# method from *C struct*" – Ken Wayne VanderLinde Aug 17 '11 at 22:36
I'm actually surprised that this works for your situation. I wouldn't have expected it to. – Ken Wayne VanderLinde Aug 17 '11 at 22:59

C# call method from C++ class

1 Answers1