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Hello,
 
I have a C function without a class. its just a function in a header file.
 
I want to expose it as managed code, so i am creating a new C++ file which had
 
extern "C"
{
    #include "cfile.h"
}
 
public ref class managedClass
{
    public:
         ///// I want to expose the function from cfile.h
}
So i can use the managed code in C# like
 
var test = managedClass.functionName(,,);
Posted 29-Apr-13 13:19pm
Edited 29-Apr-13 13:32pm
v2
Comments
Philippe Mori at 29-Apr-13 18:34pm
   
Not really a question. Just define a new function in your class and call the original one from the implementation possibly adjusting parameters for easier usage from .NET side.
Sergey Alexandrovich Kryukov at 29-Apr-13 18:40pm
   
Right. Alternatively, it would be better to move the whole function into a "ref" class, if this is possible.
Will you just put your comment as a formal answer, to close the issue?
—SA
Philippe Mori at 30-Apr-13 8:35am
   
The best solution depends a lot on existing code complexity (and if the code is used elsewhere). If the user has a single function then maybe P/Invoke from C# would be the best solution. If the function is very simple, rewitting it in C# might be the best choice...
Sergey Alexandrovich Kryukov at 30-Apr-13 11:12am
   
Sure, agree.
—SA
Marius Bancila at 30-Apr-13 7:19am
   
So you need to wrap the stand alone function with a member function? So what's the actual problem?

1 solution

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Solution 1

you only need to call the c-func in a member function. But you better do some error checking around it.
 
If you link the dll with "delayload" you will get some startup benefit.
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