--- include/d3d9.h	2016-04-17 11:41:20.676521300 +0300
+++ include/d3d9.h.new	2016-04-17 12:12:13.637219200 +0300
@@ -2185,6 +2185,42 @@ __CRT_UUID_DECL(IDirect3DDevice9Ex,
 #define IDirect3DDevice9Ex_GetDisplayModeEx(p,a,b,c)                     (p)->GetDisplayModeEx(a,b,c)
 #endif
 
+/*****************************************************************************
+ * IDirect3D9ExOverlayExtension interface
+ */
+#define INTERFACE IDirect3D9ExOverlayExtension
+DECLARE_INTERFACE_(IDirect3D9ExOverlayExtension,IUnknown)
+{
+    /*** IUnknown methods ***/
+    STDMETHOD_(HRESULT,QueryInterface)(THIS_ REFIID riid, void** ppvObject) PURE;
+    STDMETHOD_(ULONG,AddRef)(THIS) PURE;
+    STDMETHOD_(ULONG,Release)(THIS) PURE;
+    /*** IDirect3D9ExOverlayExtension methods ***/
+    STDMETHOD(CheckDeviceOverlayType)(THIS_ UINT Adapter, D3DDEVTYPE DevType, UINT OverlayWidth, UINT OverlayHeight,
+            D3DFORMAT OverlayFormat, D3DDISPLAYMODEEX* pDisplayMode, D3DDISPLAYROTATION DisplayRotation, D3DOVERLAYCAPS* pOverlayCaps) PURE;
+};
+#undef INTERFACE
+
+#ifdef __CRT_UUID_DECL
+__CRT_UUID_DECL(IDirect3D9ExOverlayExtension,                   0x187aeb13, 0xaaf5, 0x4c59, 0x87, 0x6d, 0xe0, 0x59, 0x8, 0x8c, 0xd, 0xf8);
+#endif
+
+#if !defined(__cplusplus) || defined(CINTERFACE)
+/*** IUnknown methods ***/
+#define IDirect3D9ExOverlayExtension_QueryInterface(p,a,b) (p)->lpVtbl->QueryInterface(p,a,b)
+#define IDirect3D9ExOverlayExtension_AddRef(p) (p)->lpVtbl->AddRef(p)
+#define IDirect3D9ExOverlayExtension_Release(p) (p)->lpVtbl->Release(p)
+/*** IDirect3D9ExOverlayExtension ***/
+#define IDirect3D9ExOverlayExtension_CheckDeviceOverlayType(p,a,b,c,d,e,f,g,h) (p)->lpVtbl->CheckDeviceOverlayType(p,a,b,c,d,e,f,g,h)
+#else
+/*** IUnknown methods ***/
+#define IDirect3D9ExOverlayExtension_QueryInterface(p,a,b) (p)->QueryInterface(a,b)
+#define IDirect3D9ExOverlayExtension_AddRef(p) (p)->AddRef()
+#define IDirect3D9ExOverlayExtension_Release(p) (p)->Release()
+/*** IDirect3D9ExOverlayExtension ***/
+#define IDirect3D9ExOverlayExtension_CheckDeviceOverlayType(p,a,b,c,d,e,f,g,h) (p)->CheckDeviceOverlayType(a,b,c,d,e,f,g,h)
+#endif
+
 #ifdef __cplusplus
 extern "C" {
 #endif  /* defined(__cplusplus) */