Have a type in the header files I'm working with called VTVOID it is the type of a struct element and a number of parameters.
In the header file defining types is the line

#define VTVOID   void

I read in another discussion the void maps to System.Void however when I plug that into the C# code I get the error

"System.Void cannot be used in C# -- use typeof(void) to get the void object."

So what type do I plug in?
Jim