Stubbed some interfaces for the FilterGraph CLSID.

dlls/quartz/quartz_private.h

diff --git a/dlls/quartz/quartz_private.h b/dlls/quartz/quartz_private.h
new file mode 100644
index 0000000..eaf88d9
--- /dev/null
+++ b/dlls/quartz/quartz_private.h
@@ -0,0 +1,45 @@
+/*              DirectShow private interfaces (QUARTZ.DLL)
+ *
+ * Copyright 2002 Lionel Ulmer
+ *
+ * This file contains the (internal) driver registration functions,
+ * driver enumeration APIs and DirectDraw creation functions.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+#ifndef __QUARTZ_PRIVATE_INCLUDED__
+#define __QUARTZ_PRIVATE_INCLUDED__
+
+#include "winbase.h"
+#include "wtypes.h"
+#include "wingdi.h"
+#include "winuser.h"
+#include "dshow.h"
+
+typedef struct _IFilterGraphImpl {
+    ICOM_VTABLE(IGraphBuilder) *IGraphBuilder_vtbl;
+    ICOM_VTABLE(IMediaControl) *IMediaControl_vtbl;
+    ICOM_VTABLE(IMediaSeeking) *IMediaSeeking_vtbl;
+    ICOM_VTABLE(IBasicAudio) *IBasicAudio_vtbl;
+    ICOM_VTABLE(IBasicVideo) *IBasicVideo_vtbl;
+    ICOM_VTABLE(IVideoWindow) *IVideoWindow_vtbl;
+    ICOM_VTABLE(IMediaEventEx) *IMediaEventEx_vtbl;
+    ULONG ref;
+} IFilterGraphImpl;
+
+HRESULT FILTERGRAPH_create(IUnknown *pUnkOuter, LPVOID *ppObj) ;
+
+#endif /* __QUARTZ_PRIVATE_INCLUDED__ */