[ uuid (f691b703-f681-47dc-afcd-034b2faab911), // You must change this when you change the interface
  version(1.0),
  pointer_default(unique),

]
interface hello
{

void HelloProc([in] handle_t h1,
			   [in, string] unsigned char * pszString);

void Shutdown([in] handle_t h1);

}