Is it possible to share an enum declaration between C# and unmanaged C++?

Question

Is there a way to share an enum definition between native (unmanaged) C++ and (managed) C#?

I have the following enum used in completely unmanaged code:

Answer 1

I've had the same problem in the past and solved it using preprocessor definitions.

In your unmanaged code, inside a header that can also be included by your managed wrapper, place your enumeration items into a #define.

Then, in your managed and unmanaged enumeration definitions, use the same #define for both usages.

The movement of the enumerations between the managed and unmanaged world looks slightly nasty (basically a cast is needed), but to your caller in the unmanaged world, it'll look and feel fine.

Good luck,