PInvokes with managed and unmanaged objects

Question

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;} } This code works.... should I be surpise that I'm able to minic unmanaged classes with managed classes, marshall the managed classes through PInvoke and then let unmanaged code call methods on the managed classes...? Is this code good or should I be avoiding this and only use managed classes to minic unmanaged structures that contain no methods? James