Wrapper for C++ function to be used in C# (as dll)

[hofman007]

Hello,
I want to use this function in my C# project:

typedef float3 vec; 
class OBB { 
public:     
vec pos;vec r; vec axis[3];
static OBB OptimalEnclosingOBB(const vec *pointArray, int numPoints);
}

So I need to write a wrapper that will go something like this:

using namespace System;
using namespace msclr::interop;

#if defined(__cplusplus)
extern "C" {
#endif
    __declspec(dllexport) ??? OEOBB_Wrapper(???, int numPoints);

#if defined(__cplusplus)
}
#endif

String^ OEOBB_Wrapper(float[][], int i) {
// some code casting float[][] to vec *pointArray   
// RerturnValue OptimalEnclosingOBB(const vec *pointArray, int numPoints);
// casting ReturnValue into something C# can read
return ??;
}

But I have 2 problems, The input: vec *pointArray type is not defined in C# so which type I can use instead and how do I cast it? The output: OBB class is not defined in C#, so what kind of return value my wrapper can use instead (after getting the OBB from the function)?

[Arjay]

For pinvoke examples, take a look at the site: http://pinvoke.net

The site has plenty of examples of pinvoking to c-style dll functions.