[Mono-list] PInvoke and Marshalling

[James Lapalme]

Dear All, I created a dll with the following: extern "C" _declspec(dllexport) int myFunction(A*){return a->myInt();} class A{     public:         int i;         int myInt(void){rerturn i;} } I creates a C# client with the folllowing: public class MyClient{     [DllImport("MyDll.dll")]     public static extern in myFunction(A a);     public static void Main(){         A a = new A();         a.i=5;         Console.WriteLine(myFunction(a));     } } [StructureLayout(LayputKind.Sequential)] public class A{         public int i;         public int myInt(void){rerturn i;} } Why does this code work because most of the example I have seen is always using classes to mimic struct with no methods only fields?   How is the object marshalled?   I have readed .Net nad COM by Nathan/ COM and Net by Troelsen/MSND doc... there is no info on this matter. Where can I get more information on this subject?   What are the limites(inheritence,....) of redefining C+ classes in C# and call C++ code with the redefined classes? James P.s this code was tried with the microsoft's version of .Net