--- mstools/samples/rpc/mandel/mdlrpc.idl	2018/08/09 18:20:01	1.1
+++ mstools/samples/rpc/mandel/mdlrpc.idl	2018/08/09 18:24:14	1.1.1.4
@@ -1,25 +1,20 @@
-[ uuid (12345678-1234-1234-1234-123456789ABC)]
+[ uuid (5630EAA0-CA48-1067-B320-00DD010662DA),
+  version (1.0),
+  pointer_default(unique)
+]
 interface mdlrpc
 {
-#define HEIGHT          300
-#define MAXLINES        32
-#define LONGSIZE        8
-#define MAX_BUFSIZE     (HEIGHT * LONGSIZE * MAXLINES)
 
-typedef  unsigned short     WORD;
-typedef   WORD *           PWORD;
-
-typedef  unsigned long     DWORD;
-typedef  DWORD *          PDWORD;
+#define BUFSIZE   1200     // also defined in mandel.h
 
 typedef struct _cpoint {
-    double	real;
-    double	imag;
+    double  real;
+    double  imag;
 } CPOINT;
 
 typedef CPOINT * PCPOINT;
 
-typedef struct _LONGRECT {     /* rcl */
+typedef struct _LONGRECT { 
     long    xLeft;
     long    yBottom;
     long    xRight;
@@ -28,17 +23,14 @@ typedef struct _LONGRECT {     /* rcl */
 
 typedef LONGRECT *PLONGRECT;
 
-typedef struct _LINEBUF {
-    WORD adw[MAX_BUFSIZE];
-} LINEBUF;
-
-typedef LINEBUF * PLINEBUF;
-
+typedef unsigned short LINEBUF[BUFSIZE];
 
-void MandelCalc( [in]  PCPOINT   pcptLL,
-		 [in]  PLONGRECT prcDraw,
-                 [in]  double    precision,
-                 [in]  DWORD     ulThreshold,
-                 [out] PLINEBUF  pbBuf);
+void MandelCalc(
+    [in]       PCPOINT        pcptLL,
+    [in]       PLONGRECT      prcDraw,
+    [in]       double         precision,
+    [in]       unsigned long  ulThreshold,
+    [out, ref] LINEBUF *      pbBuf
+    );
 
 }