.Net question

I am playing with vc++.net and wrapping the joy* api into a class. The method I want to use is to have a msgloop and event structure in the class so that when it is used in vb.net or C# the user won't need to worry about a callback function.

the C++ Concept is very simple.

Code:

---

#using <mscorlib.dll>

using namespace System;

namespace IO{
       
        [event_source(managed)]
        public __gc class JoyStick{
        public:
                __event void ButtonPress();

                void RaiseButtonPress(){
                        ButtonPress();
                }

        };
}

---

compiles fine...

But, when I get into VB.Net and I try to setup a delegate using the __Delegate_ButtonPressed method that is shown in my intelsense I get a can't be null error. It just ccued to me that it could be because its void but I don't think so.

If any of you guys have done anything like this let me know.