--- mstools/samples/console/readchar.c	2018/08/09 18:20:36	1.1
+++ mstools/samples/console/readchar.c	2018/08/09 18:21:18	1.1.1.2
@@ -3,6 +3,9 @@
 #include <malloc.h>
 #include "console.h"
 
+/* Microsoft Developer Support
+   Copyright (c) 1992 Microsoft Corporation */
+
 /*********************************************************************
 * FUNCTION: demoReadConChar(HANDLE hConOut)                          *
 *                                                                    *
@@ -30,7 +33,7 @@ void demoReadConChar(HANDLE hConOut)
                   "a buffer, then print that buffer to the console at the\n"
                   "current cursor position. Hit ESC to return.\n\n");
   hStdIn = GetStdHandle(STD_INPUT_HANDLE);
-  PERR((int) hStdIn != -1,"GetStdHandle");
+  PERR(hStdIn != INVALID_HANDLE_VALUE, "GetStdHandle");
   /* save the console mode */
   bSuccess = GetConsoleMode(hStdIn, &dwStdInMode);
   PERR(bSuccess, "GetConsoleMode");