diff --git a/reactos/include/winuser.h b/reactos/include/winuser.h
index ea3b251f652..96ec3a69d8c 100644
--- a/reactos/include/winuser.h
+++ b/reactos/include/winuser.h
@@ -824,6 +824,10 @@ extern "C" {
 #endif
 #define QS_SENDMESSAGE 64
 #define QS_TIMER 16
+
+#define USER_TIMER_MAXIMUM  0x7FFFFFFF
+#define USER_TIMER_MINIMUM  0x0000000A
+
 #define MWMO_WAITALL 1
 #define MWMO_ALERTABLE 2
 #define MWMO_INPUTAVAILABLE 4
@@ -962,6 +966,12 @@ extern "C" {
 #else
 #define SM_CMETRICS 83
 #endif
+
+#if(_WIN32_WINNT >= 0x0501)
+#define SM_CXFOCUSBORDER        83
+#define SM_CYFOCUSBORDER        84
+#endif /* _WIN32_WINNT >= 0x0501 */
+
 #define SM_REMOTESESSION 0X1000
 #define ARW_BOTTOMLEFT 0
 #define ARW_BOTTOMRIGHT 1
@@ -1542,6 +1552,30 @@ extern "C" {
 #define WM_THEMECHANGED 794
 #endif
 
+#ifndef _WIN32_WCE
+#if(_WIN32_WINNT >= 0x0500)
+#define WM_CHANGEUISTATE                0x0127
+#define WM_UPDATEUISTATE                0x0128
+#define WM_QUERYUISTATE                 0x0129
+
+/*
+ * LOWORD(wParam) values in WM_*UISTATE*
+ */
+#define UIS_SET                         1
+#define UIS_CLEAR                       2
+#define UIS_INITIALIZE                  3
+
+/*
+ * HIWORD(wParam) values in WM_*UISTATE*
+ */
+#define UISF_HIDEFOCUS                  0x1
+#define UISF_HIDEACCEL                  0x2
+#if(_WIN32_WINNT >= 0x0501)
+#define UISF_ACTIVE                     0x4
+#endif /* _WIN32_WINNT >= 0x0501 */
+#endif /* _WIN32_WINNT >= 0x0500 */
+#endif /* _WIN32_WCE */
+
 #define BM_CLICK 245
 #define BM_GETCHECK 240
 #define BM_GETIMAGE 246