diff --git a/.gitignore b/.gitignore
index 531c2fce5e0..4b61b4da2d1 100644
--- a/.gitignore
+++ b/.gitignore
@@ -142,6 +142,7 @@ include/bits1_5.h
 include/comcat.h
 include/config.h
 include/control.h
+include/ctxtcall.h
 include/d3d10.h
 include/ddstream.h
 include/dimm.h
diff --git a/dlls/uuid/uuid.c b/dlls/uuid/uuid.c
index ecac2659878..94f345efabd 100644
--- a/dlls/uuid/uuid.c
+++ b/dlls/uuid/uuid.c
@@ -41,6 +41,7 @@ DEFINE_GUID(GUID_NULL,0,0,0,0,0,0,0,0,0,0,0);
 #include "olectl.h"
 
 #include "ocidl.h"
+#include "ctxtcall.h"
 
 #include "docobj.h"
 #include "exdisp.h"
diff --git a/include/Makefile.in b/include/Makefile.in
index 09d7b3cc92f..2a990c0a10d 100644
--- a/include/Makefile.in
+++ b/include/Makefile.in
@@ -18,6 +18,7 @@ PUBLIC_IDL_H_SRCS = \
 	bits1_5.idl \
 	comcat.idl \
 	control.idl \
+	ctxtcall.idl \
 	d3d10.idl \
 	ddstream.idl \
 	dimm.idl \
diff --git a/include/ctxtcall.idl b/include/ctxtcall.idl
new file mode 100644
index 00000000000..f07dc1bb79e
--- /dev/null
+++ b/include/ctxtcall.idl
@@ -0,0 +1,49 @@
+/*
+ * Copyright (C) 2008 Louis Lenders
+ *
+ * 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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
+ */
+
+import "wtypes.idl";
+import "objidl.idl";
+import "unknwn.idl";
+
+typedef struct tagComCallData
+{
+    DWORD dwDispid;
+    DWORD dwReserved;
+    void  *pUserDefined;
+} ComCallData;
+
+/***************************************************************************
+ * IContextCallback
+ */
+[
+  local,
+  object,
+  uuid(000001da-0000-0000-c000-000000000046),
+  pointer_default(unique)
+]
+interface IContextCallback : IUnknown
+{
+    typedef HRESULT (__stdcall *PFNCONTEXTCALL)(ComCallData *pParam);
+
+    HRESULT ContextCallback(
+            [in] PFNCONTEXTCALL pCallback,
+            [in] ComCallData *pParam,
+            [in] REFIID riid,
+            [in] int iMethod,
+            [in] IUnknown *pUnk);
+}