diff --git a/reactos/include/psdk/basetsd.h b/reactos/include/psdk/basetsd.h
index 58e04a6e321..db2a0ac21b3 100644
--- a/reactos/include/psdk/basetsd.h
+++ b/reactos/include/psdk/basetsd.h
@@ -35,6 +35,7 @@
 #define ULongToPtr( ul )  ((VOID*)(ULONG_PTR)((unsigned long)ul))
 #endif /* !_WIN64 */
 
+#define UlongToHandle(ul) ULongToHandle(ul)
 #define UlongToPtr(ul) ULongToPtr(ul)
 #define UintToPtr(ui) UIntToPtr(ui)
 #define MAXUINT_PTR  (~((UINT_PTR)0))
diff --git a/reactos/include/psdk/setupapi.h b/reactos/include/psdk/setupapi.h
index 8e0fd34160d..4e039da25ab 100644
--- a/reactos/include/psdk/setupapi.h
+++ b/reactos/include/psdk/setupapi.h
@@ -338,6 +338,7 @@ extern "C" {
 #define ERROR_INTERFACE_DEVICE_REMOVED	ERROR_DEVICE_INTERFACE_REMOVED
 #define ERROR_NO_DEFAULT_INTERFACE_DEVICE	ERROR_NO_DEFAULT_DEVICE_INTERFACE
 #define ERROR_NO_SUCH_INTERFACE_DEVICE	ERROR_NO_SUCH_DEVICE_INTERFACE
+#define ERROR_WRONG_INF_TYPE              (APPLICATION_ERROR_MASK|ERROR_SEVERITY_ERROR|0x24A)
 
 #define FILEOP_COPY	0
 #define FILEOP_ABORT	0
diff --git a/reactos/include/psdk/winuser.h b/reactos/include/psdk/winuser.h
index 7e9cd301754..f2f277cb4c5 100644
--- a/reactos/include/psdk/winuser.h
+++ b/reactos/include/psdk/winuser.h
@@ -1410,6 +1410,7 @@ extern "C" {
     #define SPI_SETSHOWIMEUI 0x006F
     /* Correct ? */
     #define SPI_GETWHEELSCROLLCHARS 0x006C
+    #define SPI_SETWHEELSCROLLCHARS 0x006D
 #endif
 
 #if(WINVER >= 0x0500)
@@ -1582,6 +1583,9 @@ extern "C" {
 #define WM_GETHOTKEY 51
 #define WM_QUERYDRAGICON 55
 #define WM_COMPAREITEM 57
+#if (WINVER >= 0x0500)
+#define WM_GETOBJECT 61
+#endif /* (WINVER >= 0x0500) */
 #define WM_COMPACTING 65
 #define WM_COMMNOTIFY 68		/* obsolete */
 #define WM_WINDOWPOSCHANGING 70
@@ -2500,11 +2504,11 @@ extern "C" {
 #endif /* (WINVER >= 0x0500) */
 #define CURSOR_SHOWING 0x00000001
 #define WS_ACTIVECAPTION 0x00000001
-#if (_WIN32_WINNT >= 0x0403)
-#define INPUT_MOUSE 0x00000000
-#define INPUT_KEYBOARD 0x00000001
-#define INPUT_HARDWARE 0x00000002
-#endif /* (_WIN32_WINNT >= 0x0403) */
+#if (_WIN32_WINNT >= 0x0400)
+#define INPUT_MOUSE 0
+#define INPUT_KEYBOARD 1
+#define INPUT_HARDWARE 2
+#endif /* (_WIN32_WINNT >= 0x0400) */
 #if (WINVER >= 0x0400)
 #define ENDSESSION_LOGOFF 0x80000000
 #endif
@@ -3494,7 +3498,7 @@ typedef struct tagMOUSEMOVEPOINT {
   ULONG_PTR dwExtraInfo;
 } MOUSEMOVEPOINT,*PMOUSEMOVEPOINT,*LPMOUSEMOVEPOINT;
 #endif
-#if (_WIN32_WINNT >= 0x0403)
+#if (_WIN32_WINNT >= 0x0400)
 typedef struct tagMOUSEINPUT {
   LONG dx;
   LONG dy;
@@ -3523,7 +3527,7 @@ typedef struct tagINPUT {
 		HARDWAREINPUT hi;
   } DUMMYUNIONNAME;
 } INPUT,*PINPUT,*LPINPUT;
-#endif /* (_WIN32_WINNT >= 0x0403) */
+#endif /* (_WIN32_WINNT >= 0x0400) */
 #if (WINVER >= 0x0500)
 typedef struct tagGUITHREADINFO {
 	DWORD cbSize;