Managed C++/CLI

ManagedWrapper.h

	public delegate void BasicCallbackDelegate(short cmd);
	public delegate void NonBasicCallbackDelegate(array<EPClass^>^ epList);

	[StructLayoutAttribute(Sequential, CharSet = Ansi )]
	public ref struct ManagedBasicDelegateWrapper
	{
		[MarshalAsAttribute(UnmanagedType::FunctionPtr)]
		BasicCallbackDelegate^ _Delegate;
        };

	[StructLayoutAttribute(Sequential, CharSet = Ansi )]
	public ref struct ManagedNonBasicDelegateWrapper
	{
		[MarshalAsAttribute(UnmanagedType::FunctionPtr)]
		NonBasicCallbackDelegate^ _nDelegate;
        };

	public ref class ManagedWrapperClass
	{
	public:
		ManagedWrapperClass(ManagedBasiceDelegateWrapper^ cbd);
		ManagedWrapperClass(ManagedNonBasicDelegateWrapper^ cbd);
	};

ManagedWrapper.cpp

        extern class BasicPushConsumer *BasicPushConsumerObject;
        extern class NonBasicPushConsumer *NonBasicPushConsumerObject;

	ManagedWrapperClass::ManagedWrapperClass(ManagedBasicDelegateWrapper^ cbd)
	{
		gt_Callback callback;

		Marshal::StructureToPtr(cbd, safe_cast<System::IntPtr>(&callback), false);

		BasicPushConsumerObject->SetCallbackInUnmanaged(callback);
	}
	
	ManagedWrapperClass::ManagedWrapperClass(ManagedNonBasicDelegateWrapper^ cbd)
	{
		ep_Callback callback;

		Marshal::StructureToPtr(cbd, safe_cast<System::IntPtr>(&callback), false);

		NonBasicPushConsumer->SetCallbackInUnmanaged(callback);
	}

*pruned* NonBasicPushConsumer.cpp
//Unmanaged class required by CORBA

typedef void (*gt_Callback) (short cmd);
typedef void (*ep_Callback) (array<EPClass^>^ epList);

void NonBasicPushConsumer::SetCallbackInUnmanaged(ep_Callback ptr2f)
{
	scallback = ptr2f;
}

void NonBasicPushConsumer::ManagedMethodToCall(array<EPClass^>^ epList)
{
	scallback(epList); //This produces the crash in question
}

*pruned* Form1.cs

            ManagedNonBasicDelegateWrapper mcf = new ManagedNonBasicDelegateWrapper();
            mcf._epDelegate = new EntityPositionCallbackDelegate(CallbackFunction);
            ManagedWrapperClass mwc = new ManagedWrapperClass(mcf);

        public static void CallbackFunction(System.Array epList)
        {
            Console.WriteLine("CALLBACK!");
        }