[ uuid(56BF67C0-6503-1068-BF67-00DD010FBF25),
  version(1.0),
  pointer_default(unique)
]
interface umarsh
{

const short STRING_SIZE = 100;

typedef char       CHAR_STRING[STRING_SIZE];
typedef wchar_t    WCHAR_STRING[STRING_SIZE];

// note that the client and server side need different header files,
// since the user_marshal ACF attribute changes the application's
// signatures for the next two functions

// client side functions defined with ASCII for both functions
// server side functions defined with UNICODE for both functions

// this function uses UNICODE on the wire (converted by client stub)
void ModifyMyWString([in] handle_t h1,[in, out] WCHAR_STRING *pStr);

// this function uses ASCII on the wire (converted by server stub)
void ModifyMyString([in] handle_t h1,[in, out] CHAR_STRING * pStr );

void Shutdown([in] handle_t h1);

}