diff --git a/reactos/include/ddk/d3dhalex.h b/reactos/include/ddk/d3dhalex.h
new file mode 100644
index 00000000000..c040876c8fb
--- /dev/null
+++ b/reactos/include/ddk/d3dhalex.h
@@ -0,0 +1,10 @@
+
+
+#ifndef _D3DHALEX_H
+#define _D3DHALEX_H
+#define D3DGDI_IS_GDI2(pData)               ((((DD_GETDRIVERINFO2DATA*)(pData->lpvData))->dwMagic)  == D3DGDI2_MAGIC)
+#define D3DGDI_IS_STEREOMODE(pData)         ((((DD_STEREOMODE*)        (pData->lpvData))->dwHeight) != D3DGDI2_MAGIC)
+#define D3DGDI_GET_GDI2_DATA(pData)         (D3DGDI_IS_GDI2(pData) ? (((DD_GETDRIVERINFO2DATA*)(pData->lpvData))) : NULL)
+#define D3DGDI_GET_STEREOMODE_DATA(pData)   (D3DGDI_IS_STEREOMODE(pData) ? (((DD_STEREOMODE*)(pData->lpvData)))   : NULL)
+
+#endif