[Mono-list] question about ObjectiveC & other language support

[Lloyd Dupont]

i know that ObjectiveC and other language support should be possible, 
but i wonder, how this is automatically handle ?

I personally use interop with [DllImport(..)] tag on any function i 
need. but this a binding to functional language.

I know that you could define COM interface of your class so they could 
be used such as directly in C# but this is done, it seems to me, in 
obscure microsoft idiom and i have no idea how to write a C++ (or 
objective-c, BTW) class which could directly be used in C#, if anyone 
could enlighten me ?