Hi,

I wish to convert c++ code written using VC++ 6.0 to the .Net development
environment (Visual Studio 2005).  

So far I have copied the code into a new C++ Class Library project and
recompiled it.  I got some errors from the linker and had to change the
configuration of the project to use the MFC as a shared dll even though the
code is mostly pure C++ - I guess there must be a reference somewhere.  

Anyhow, the environment generated a main class for me, shown below, as
probably was expecting managed c++ code.  

My problem is that I do not know how to export the interfaces my client C#
code would be interested in.  Only the generated class is visible and the
C++ classes are not visible from within this class.  The c++ code does not
belong to any namespace, as is just a large collection of classes developed
a while ago.  

What would I need to do to export my C++ interfaces?  

Can anyone provide a mini example of unmanaged C++ code compiled in visual
studio 2005 being called from a C# program?

Thanks in advance.

#pragma once

using namespace System;

namespace Project1 {

    public ref class Example
    {
        // TODO: Add your methods for this class here.
    };
}