How do I share a constant between C# and C++ code?

Question

I\'m writing two processes using C# and WCF for one and C++ and WWSAPI for the second. I want to be able to define the address being used for communication between the two

Answer 1

Wasn't happy with the other solutions for my use case so coded up a slightly hacky solution that seems to fit the original request better; a constant in one file that can be built into both a C# and a C++ project...

1. Version information in a .cs file, in a common location.

Like this:

// Version.cs
public static class MyAppVersion
{
    //build
    public static string Number = "1.0";
    public static string Phase = "Alpha";

    //configuration (these are the build constants I use, substitute your own)
#if BUILD_SHIPPING
    public static string Configuration = "Shipping";
#elif BUILD_DEVELOPMENT
    public static string Configuration = "Development";
#elif BUILD_DEBUG
    public static string Configuration = "Debug";
#else
    "build type not defined"
#endif
}

2. Include in C# project using Add Existing Item... [Add As Link]
3. Include in C++ project (in a .cpp file) with a #include

Like this:

//include version information into a .cpp
#define class namespace
#define public
#define static
#define string const char*
#include "..\..\Version.cs" //or to where-ever your file is
;
#undef class
#undef public
#undef static
#undef string

4. Reference in C# with: MyAppVersion.Number
5. Reference in C++ with: MyAppVersion::Number