diff --git a/include/Makefile.in b/include/Makefile.in
index 0dfc0fa2da..d5ec69af14 100644
--- a/include/Makefile.in
+++ b/include/Makefile.in
@@ -180,6 +180,7 @@ WINDOWS_INCLUDES = \
 	pshpack4.h \
 	pshpack8.h \
 	ras.h \
+	reason.h \
 	regstr.h \
 	richedit.h \
 	richole.h \
diff --git a/include/reason.h b/include/reason.h
new file mode 100644
index 0000000000..941f3cf777
--- /dev/null
+++ b/include/reason.h
@@ -0,0 +1,44 @@
+/*
+ * ExitWindowsEx() reason codes
+ *
+ * Copyright (C) the Wine project
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+#ifndef __WINE_REASON_H
+#define __WINE_REASON_H
+
+
+#define SHTDN_REASON_FLAG_USER_DEFINED            0x40000000
+#define SHTDN_REASON_FLAG_PLANNED                 0x80000000
+
+#define SHTDN_REASON_MAJOR_OTHER                  0x00000000
+#define SHTDN_REASON_MAJOR_NONE                   0x00000000
+#define SHTDN_REASON_MAJOR_HARDWARE               0x00010000
+#define SHTDN_REASON_MAJOR_OPERATINGSYSTEM        0x00020000
+#define SHTDN_REASON_MAJOR_SOFTWARE               0x00030000
+#define SHTDN_REASON_MAJOR_APPLICATION            0x00040000
+#define SHTDN_REASON_MAJOR_SYSTEM                 0x00050000
+#define SHTDN_REASON_MAJOR_POWER                  0x00060000
+#define SHTDN_REASON_MAJOR_LEGACY_API             0x00070000
+
+#define SHTDN_REASON_MINOR_OTHER                  0x00000000
+#define SHTDN_REASON_MINOR_NONE                   0x000000ff
+
+#define SHTDN_REASON_UNKNOWN                      SHTDN_REASON_MINOR_NONE
+#define SHTDN_REASON_LEGACY_API                   (SHTDN_REASON_MAJOR_LEGACY_API | SHTDN_REASON_FLAG_PLANNED)
+
+#endif
diff --git a/include/winreg.h b/include/winreg.h
index f6df970828..2e0edb3caf 100644
--- a/include/winreg.h
+++ b/include/winreg.h
@@ -52,6 +52,19 @@ typedef struct value_entW {
 
 typedef ACCESS_MASK REGSAM;
 
+/*
+ * InitiateSystemShutdown() reasons
+ */
+#include <reason.h>
+
+#define REASON_OTHER            (SHTDN_REASON_MAJOR_OTHER | SHTDN_REASON_MINOR_OTHER)
+#define REASON_UNKNOWN          SHTDN_REASON_UNKNOWN
+#define REASON_LEGACY_API       SHTDN_REASON_LEGACY_API
+#define REASON_PLANNED_FLAG     SHTDN_REASON_FLAG_PLANNED
+
+#define MAX_SHUTDOWN_TIMEOUT    (10*365*24*60*60)
+
+
 BOOL        WINAPI AbortSystemShutdownA(LPSTR);
 BOOL        WINAPI AbortSystemShutdownW(LPWSTR);
 #define     AbortSystemShutdown WINELIB_NAME_AW(AbortSystemShutdown)
diff --git a/include/winuser.h b/include/winuser.h
index 0c6c469887..6cd6815c6d 100644
--- a/include/winuser.h
+++ b/include/winuser.h
@@ -2526,6 +2526,7 @@ typedef struct
 #define EWX_REBOOT           2
 #define EWX_FORCE            4
 #define EWX_POWEROFF         8
+#define EWX_FORCEIFHUNG     16
 
 /* SetLastErrorEx types */
 #define	SLE_ERROR	0x00000001