从C＃引用C ++ / clr项目时出现问题

Question

I have compiled a native C++ project using the /CLR switch ("gloox", an XMPP library). The build succeeded and I'm able to reference it from a C# project (ie it shows up in the References folder). The C++ project exposes some classes under the namespace 'gloox'.

I can also see the gloox {} namespace in the object browser, along with all the exported classes.

The problem is that from the C# project I can't 'see' the gloox namespace (ie 'using gloox' does not compile).

Thanks

Answer 1

Does the C++ project expose any managed types ( ref class or value class or enum class )? The /CLR option doesn't magically make types available to managed code, you need the managed metadata which is only available for managed types, and the types need to be public to be used from other assemblies.

(To be totally accurate, the C++/CLI compiler sometimes creates metadata for native classes, especially in /clr:pure mode, but marks these as internal so you can't use them from other languages which don't understand the native C++ rules.)