diff --git a/reactos/include/ddk/ddrawi.h b/reactos/include/ddk/ddrawi.h
index 0e4384251d1..0ea13c5f718 100644
--- a/reactos/include/ddk/ddrawi.h
+++ b/reactos/include/ddk/ddrawi.h
@@ -207,14 +207,14 @@ typedef struct _VIDMEM {
 
 
 
-
+#ifndef __DD_INCLUDED__
 #define VIDMEM_ISLINEAR		0x00000001
 #define VIDMEM_ISRECTANGULAR	0x00000002
 #define VIDMEM_ISHEAP		0x00000004
 #define VIDMEM_ISNONLOCAL	0x00000008
 #define VIDMEM_ISWC		0x00000010
 #define VIDMEM_ISDISABLED	0x00000020
-
+#endif
 
 typedef struct _VIDMEMINFO {
     FLATPTR		fpPrimary;
@@ -328,9 +328,11 @@ typedef struct _DDNONLOCALVIDMEMCAPS {
 /*****************************************************************************
  * ddraw->driver callbacks
  */
+#ifndef __DD_INCLUDED__
 #define DDHAL_DRIVER_NOTHANDLED	0
 #define DDHAL_DRIVER_HANDLED	1
 #define DDHAL_DRIVER_NOCKEYHW	2
+#endif
 
 typedef struct _DDHAL_DESTROYDRIVERDATA		*LPDDHAL_DESTROYDRIVERDATA;
 typedef struct _DDHAL_CREATESURFACEDATA		*LPDDHAL_CREATESURFACEDATA;
@@ -694,10 +696,12 @@ typedef struct _DDHALINFO {
 #define DDHAL_CB32_FLIPTOGDISURFACE     0x00000200l
 #define DDHAL_PALCB32_DESTROYPALETTE    0x00000001l
 #define DDHAL_PALCB32_SETENTRIES    0x00000002l
+#ifndef __DD_INCLUDED__
 #define DDHALINFO_ISPRIMARYDISPLAY	        0x00000001
 #define DDHALINFO_MODEXILLEGAL	  	        0x00000002
 #define DDHALINFO_GETDRIVERINFOSET	        0x00000004
 #define DDHALINFO_GETDRIVERINFO2            0x00000008
+#endif 
 #define DDRAWI_VPORTSTART                   0x0001
 #define DDRAWI_VPORTSTOP                    0x0002
 #define DDRAWI_VPORTUPDATE                  0x0003
@@ -725,11 +729,13 @@ typedef struct _DDHALINFO {
 #define DDHAL_MISC2CB32_CREATESURFACEEX     0x00000002
 #define DDHAL_MISC2CB32_GETDRIVERSTATE      0x00000004
 #define DDHAL_MISC2CB32_DESTROYDDLOCAL      0x00000008
+#ifndef __DD_INCLUDED__
 #define DDHAL_EXEBUFCB32_CANCREATEEXEBUF    0x00000001
 #define DDHAL_EXEBUFCB32_CREATEEXEBUF       0x00000002
 #define DDHAL_EXEBUFCB32_DESTROYEXEBUF      0x00000004
 #define DDHAL_EXEBUFCB32_LOCKEXEBUF         0x00000008
 #define DDHAL_EXEBUFCB32_UNLOCKEXEBUF       0x00000010
+#endif 
 #define DDHAL_VPORT32_CANCREATEVIDEOPORT    0x00000001
 #define DDHAL_VPORT32_CREATEVIDEOPORT       0x00000002
 #define DDHAL_VPORT32_FLIP                  0x00000004
@@ -746,8 +752,10 @@ typedef struct _DDHALINFO {
 #define DDHAL_VPORT32_GETSIGNALSTATUS       0x00004000
 #define DDHAL_VPORT32_COLORCONTROL          0x00008000
 #define DDHAL_COLOR_COLORCONTROL            0x00000001
+#ifndef __DD_INCLUDED__
 #define DDHAL_KERNEL_SYNCSURFACEDATA        0x00000001
 #define DDHAL_KERNEL_SYNCVIDEOPORTDATA      0x00000002
+#endif
 #define DDHAL_MOCOMP32_GETGUIDS             0x00000001
 #define DDHAL_MOCOMP32_GETFORMATS           0x00000002
 #define DDHAL_MOCOMP32_CREATE               0x00000004
@@ -1680,9 +1688,11 @@ typedef struct _DDRAWI_DDRAWPALETTE_GBL {
 #define DDRAWICLIP_INMASTERSPRITELIST 0x00000004
 #define PFINDEX_UNINITIALIZED         (0UL)
 #define PFINDEX_UNSUPPORTED           (~0UL)
+#ifndef __DD_INCLUDED__
 #define ROP_HAS_SOURCE                0x00000001
 #define ROP_HAS_PATTERN               0x00000002
 #define ROP_HAS_SOURCEPATTERN         ROP_HAS_PATTERN | ROP_HAS_SOURCE
+#endif
 #define DDRAWIVPORT_ON                0x00000001
 #define DDRAWIVPORT_SOFTWARE_AUTOFLIP 0x00000002
 #define DDRAWIVPORT_COLORKEYANDINTERP 0x00000004
diff --git a/reactos/include/ddk/winddi.h b/reactos/include/ddk/winddi.h
index 1c0eeead1f8..a007c9cbf2e 100644
--- a/reactos/include/ddk/winddi.h
+++ b/reactos/include/ddk/winddi.h
@@ -2512,15 +2512,7 @@ FONTOBJ_vGetInfo(
   IN ULONG  cjSize,
   OUT FONTINFO  *pfi);
 
-WIN32KAPI
-FLATPTR
-APIENTRY
-HeapVidMemAllocAligned(
-  IN LPVIDMEM  lpVidMem,
-  IN DWORD  dwWidth,
-  IN DWORD  dwHeight,
-  IN LPSURFACEALIGNMENT  lpAlignment,
-  OUT LPLONG  lpNewPitch);
+
 
 WIN32KAPI
 LONG
@@ -2684,13 +2676,6 @@ APIENTRY
 STROBJ_vEnumStart(
   IN STROBJ  *pstro);
 
-WIN32KAPI
-VOID
-APIENTRY
-VidMemFree(
-  IN LPVMEMHEAP  pvmh,
-  IN FLATPTR  ptr);
-
 WIN32KAPI
 BOOL
 APIENTRY