--- q_a/samples/regions/regions.c	2018/08/09 18:29:33	1.1.1.2
+++ q_a/samples/regions/regions.c	2018/08/09 18:29:57	1.1.1.3
@@ -1,3 +1,14 @@
+
+/******************************************************************************\
+*       This is a part of the Microsoft Source Code Samples. 
+*       Copyright (C) 1993 Microsoft Corporation.
+*       All rights reserved. 
+*       This source code is only intended as a supplement to 
+*       Microsoft Development Tools and/or WinHelp documentation.
+*       See these sources for detailed information regarding the 
+*       Microsoft samples programs.
+\******************************************************************************/
+
 /******************************************************************************\
 *
 *  PROGRAM:     Regions.c
@@ -11,7 +22,7 @@
 *                          CreatePolyPolygonRgn()
 *                          CreateRectRgn()
 *                          FillRgn()
-*   #ifdef NOTIMPLEMENTED  FrameRgn()   #endif
+*                          FrameRgn()
 *                          GetRgnBox()
 *                          InvertRgn()
 *                          OffsetRgn()
@@ -45,10 +56,6 @@
 *               affect this region. When two regions are combined the
 *               second region will be destroyed.
 *
-*
-*                           Microsoft Developer Support
-*                     Copyright (c) 1992 Microsoft Corporation
-*
 \******************************************************************************/
 
 #include <windows.h>
@@ -73,7 +80,7 @@ int WINAPI WinMain (HANDLE hInstance, HA
   {
     WNDCLASS wc;
 
-    wc.style         = NULL;
+    wc.style         = 0;
     wc.lpfnWndProc   = (WNDPROC)MainWndProc;
     wc.cbClsExtra    = 0;
     wc.cbWndExtra    = 0;
@@ -97,11 +104,11 @@ int WINAPI WinMain (HANDLE hInstance, HA
                               WS_SYSMENU | WS_MINIMIZEBOX,
                               CW_USEDEFAULT, CW_USEDEFAULT,
                               220, 280, NULL, NULL, hInstance, NULL)))
-    return (NULL);
+    return (0);
 
   ShowWindow   (hwnd, nCmdShow);
 
-  while (GetMessage (&msg, NULL, NULL, NULL))
+  while (GetMessage (&msg, NULL, 0,0))
   {
     TranslateMessage (&msg);
     DispatchMessage  (&msg);
@@ -322,7 +329,7 @@ LRESULT CALLBACK MainWndProc (HWND hWnd,
           DialogBox (hInst, (LPCTSTR) "About", hWnd, (DLGPROC)AboutDlgProc);
           break;
       }
-      return (NULL);
+      return (0);
 
     case WM_LBUTTONDOWN:
     {
@@ -354,7 +361,7 @@ LRESULT CALLBACK MainWndProc (HWND hWnd,
           EnableMenuItem (GetSubMenu (hMenu, 0), IDM_RECTINRGN,
                           MF_DISABLED | MF_GRAYED | MF_BYCOMMAND);
 
-      return (NULL);
+      return (0);
     }
     case WM_MOUSEMOVE:
 
@@ -366,7 +373,7 @@ LRESULT CALLBACK MainWndProc (HWND hWnd,
 
         TrackRect (ptr, TRECT_PAINT, hWnd, lParam);
 
-      return (NULL);
+      return (0);
 
     case WM_LBUTTONUP:
 
@@ -390,7 +397,7 @@ LRESULT CALLBACK MainWndProc (HWND hWnd,
 
           MessageBeep (0);
       }
-      return (NULL);
+      return (0);
 
     case WM_PAINT:
     {
@@ -434,12 +441,12 @@ LRESULT CALLBACK MainWndProc (HWND hWnd,
         }
       }
       EndPaint (hWnd, &ps);
-      return (NULL);
+      return (0);
     }
     case WM_DESTROY:
 
-      PostQuitMessage(NULL);
-      return (NULL);
+      PostQuitMessage(0);
+      return (0);
   }
   return (DefWindowProc(hWnd, message, wParam, lParam));
 }