--- mstools/samples/rpc/mandel/mdlrpc.idl	2018/08/09 18:20:55	1.1.1.2
+++ mstools/samples/rpc/mandel/mdlrpc.idl	2018/08/09 18:21:59	1.1.1.3
@@ -1,4 +1,4 @@
-[ uuid (12345678-1234-1234-1234-123456789ABC),
+[ uuid (5630EAA0-CA48-1067-B320-00DD010662DA),
   version (1.0),
   pointer_default(unique)
 ]
@@ -29,11 +29,11 @@ typedef struct _LINEBUF {
     unsigned short adw[MAX_BUFSIZE];
 } LINEBUF;
 
-typedef LINEBUF * PLINEBUF;
+typedef [ref] LINEBUF * PLINEBUF;
 
 void MandelCalc( [in]  PCPOINT	      pcptLL,
 		 [in]  PLONGRECT      prcDraw,
 		 [in]  double	      precision,
 		 [in]  unsigned long  ulThreshold,
-		 [out] PLINEBUF       pbBuf);
+		 [out] LINEBUF *      pbBuf);
 }