Add comment about exception lists in both winnt.h and ntstatus.h.

diff --git a/src/include/port/win32.h b/src/include/port/win32.h
index 75583d905acaac41aed9478b1e5dd21c294fac50..0264ebc4fc93825498172533d7c116f694e49f9c 100644 (file)
--- a/src/include/port/win32.h
+++ b/src/include/port/win32.h
@@ -1,4 +1,4 @@
-/* $PostgreSQL: pgsql/src/include/port/win32.h,v 1.69 2007/01/23 03:28:49 momjian Exp $ */
+/* $PostgreSQL: pgsql/src/include/port/win32.h,v 1.70 2007/01/23 16:21:17 momjian Exp $ */
 
 #if defined(_MSC_VER) || defined(__BORLANDC__)
 #define WIN32_ONLY_COMPILER
@@ -140,6 +140,20 @@ int            semop(int semId, struct sembuf * sops, int flag);
  *     Descriptions - http://www.comp.nus.edu.sg/~wuyongzh/my_doc/ntstatus.txt
  *     MS SDK - http://www.nologs.com/ntstatus.html
  *
+ * It seems the exception lists are in both ntstatus.h and winnt.h, but
+ * ntstatus.h has a more comprehensive list, and it only contains
+ * exception values, rather than winnt, which contains lots of other
+ * things:
+ *
+ *     http://www.microsoft.com/msj/0197/exception/exception.aspx
+ *
+ *     The ExceptionCode parameter is the number that the operating system
+ *     assigned to the exception. You can see a list of various exception codes
+ *     in WINNT.H by searching for #defines that start with "STATUS_". For
+ *     example, the code for the all-too-familiar STATUS_ACCESS_VIOLATION is
+ *     0xC0000005. A more complete set of exception codes can be found in
+ *     NTSTATUS.H from the Windows NT DDK.
+ *                                               
  * Some day we might want to print descriptions for the most common
  * exceptions, rather than printing a URL.  FormatMessage() can print
  * the text of error values, but not exception values.