diff --git a/reactos/subsystems/win32/win32k/include/class.h b/reactos/subsystems/win32/win32k/include/class.h
index 86296aada97..b086971ec84 100644
--- a/reactos/subsystems/win32/win32k/include/class.h
+++ b/reactos/subsystems/win32/win32k/include/class.h
@@ -78,6 +78,18 @@ IntGetClassAtom(IN PUNICODE_STRING ClassName,
                 OUT PWINDOWCLASS *BaseClass  OPTIONAL,
                 OUT PWINDOWCLASS **Link  OPTIONAL);
 
+#define REGISTERCLASS_SYSTEM 0x4
+
+PWINDOWCLASS
+FASTCALL
+IntCreateClass(IN CONST WNDCLASSEXW* lpwcx,
+               IN PUNICODE_STRING ClassName,
+               IN PUNICODE_STRING MenuName,
+               IN WNDPROC wpExtra,
+               IN DWORD dwFlags,
+               IN PDESKTOP Desktop,
+               IN PPROCESSINFO pi);
+
 PCALLPROC
 UserFindCallProc(IN PWINDOWCLASS Class,
                  IN WNDPROC WndProc,
diff --git a/reactos/subsystems/win32/win32k/include/win32.h b/reactos/subsystems/win32/win32k/include/win32.h
index 46da8c52915..6fbc05f0277 100644
--- a/reactos/subsystems/win32/win32k/include/win32.h
+++ b/reactos/subsystems/win32/win32k/include/win32.h
@@ -75,17 +75,17 @@ typedef struct _W32PROCESS
   ULONG         W32PF_flags;
   PKEVENT       InputIdleEvent;
   DWORD         StartCursorHideTime;
-  DWORD         NextStart;
+  struct _W32PROCESS * NextStart;
   PVOID         pDCAttrList;
   PVOID         pBrushAttrList;
   DWORD         W32Pid;
   LONG          GDIHandleCount;
   LONG          UserHandleCount;
-  DWORD         cSimpleLock;  /* Locking Process during access to structure. */
-  RTL_AVL_TABLE rtlAvlTable;  /* Process AVL Table. */
-  LIST_ENTRY    leDCAttrList;
-  LIST_ENTRY    leObjAttrList;
-/* ReactOS */
+  PEX_PUSH_LOCK GDIPushLock;  /* Locking Process during access to structure. */
+  RTL_AVL_TABLE GDIEngUserMemAllocTable;  /* Process AVL Table. */
+  LIST_ENTRY    GDIDcAttrFreeList;
+  LIST_ENTRY    GDIBrushAttrFreeList;
+/* ReactOS, will move to PROCESSINFO */
   LIST_ENTRY ClassList;
   LIST_ENTRY MenuListHead;
   FAST_MUTEX PrivateFontListLock;