diff --git a/include/wine/server_protocol.h b/include/wine/server_protocol.h
index 5eeec43c5bd..25ba8813dd6 100644
--- a/include/wine/server_protocol.h
+++ b/include/wine/server_protocol.h
@@ -140,6 +140,15 @@ typedef struct
 } property_data_t;
 
 
+typedef struct
+{
+    int  left;
+    int  top;
+    int  right;
+    int  bottom;
+} rectangle_t;
+
+
 
 
 
@@ -1652,6 +1661,36 @@ struct get_window_tree_request
 };
 
 
+struct set_window_rectangles_request
+{
+    struct request_header __header;
+    user_handle_t  handle;
+    rectangle_t    window;
+    rectangle_t    client;
+};
+
+
+
+struct get_window_rectangles_request
+{
+    struct request_header __header;
+    user_handle_t  handle;
+    rectangle_t    window;
+    rectangle_t    client;
+};
+
+
+
+struct get_windows_offset_request
+{
+    struct request_header __header;
+    user_handle_t  from;
+    user_handle_t  to;
+    int            x;
+    int            y;
+};
+
+
 
 struct set_window_property_request
 {
@@ -1823,6 +1862,9 @@ enum request
     REQ_get_window_parents,
     REQ_get_window_children,
     REQ_get_window_tree,
+    REQ_set_window_rectangles,
+    REQ_get_window_rectangles,
+    REQ_get_windows_offset,
     REQ_set_window_property,
     REQ_remove_window_property,
     REQ_get_window_property,
@@ -1963,12 +2005,15 @@ union generic_request
     struct get_window_parents_request get_window_parents;
     struct get_window_children_request get_window_children;
     struct get_window_tree_request get_window_tree;
+    struct set_window_rectangles_request set_window_rectangles;
+    struct get_window_rectangles_request get_window_rectangles;
+    struct get_windows_offset_request get_windows_offset;
     struct set_window_property_request set_window_property;
     struct remove_window_property_request remove_window_property;
     struct get_window_property_request get_window_property;
     struct get_window_properties_request get_window_properties;
 };
 
-#define SERVER_PROTOCOL_VERSION 59
+#define SERVER_PROTOCOL_VERSION 60
 
 #endif /* __WINE_WINE_SERVER_PROTOCOL_H */
diff --git a/server/protocol.def b/server/protocol.def
index 95bc13a9b4e..78955d9197f 100644
--- a/server/protocol.def
+++ b/server/protocol.def
@@ -141,6 +141,15 @@ typedef struct
     handle_t       handle;   /* handle stored in property */
 } property_data_t;
 
+/* structure to specify window rectangles */
+typedef struct
+{
+    int  left;
+    int  top;
+    int  right;
+    int  bottom;
+} rectangle_t;
+
 /****************************************************************/
 /* Request declarations */
 
@@ -1478,6 +1487,32 @@ enum message_type
     user_handle_t  last_child;    /* last child */
 @END
 
+/* Set the window and client rectangles of a window */
+@REQ(set_window_rectangles)
+    user_handle_t  handle;        /* handle to the window */
+    rectangle_t    window;        /* window rectangle */
+    rectangle_t    client;        /* client rectangle */
+@END
+
+
+/* Get the window and client rectangles of a window */
+@REQ(get_window_rectangles)
+    user_handle_t  handle;        /* handle to the window */
+@REPLY
+    rectangle_t    window;        /* window rectangle */
+    rectangle_t    client;        /* client rectangle */
+@END
+
+
+/* Get the coordinates offset between two windows */
+@REQ(get_windows_offset)
+    user_handle_t  from;          /* handle to the first window */
+    user_handle_t  to;            /* handle to the second window */
+@REPLY
+    int            x;             /* x coordinate offset */
+    int            y;             /* y coordinate offset */
+@END
+
 
 /* Set a window property */
 @REQ(set_window_property)
diff --git a/server/request.h b/server/request.h
index 8939854b57e..6202c002e27 100644
--- a/server/request.h
+++ b/server/request.h
@@ -194,6 +194,9 @@ DECL_HANDLER(get_window_info);
 DECL_HANDLER(get_window_parents);
 DECL_HANDLER(get_window_children);
 DECL_HANDLER(get_window_tree);
+DECL_HANDLER(set_window_rectangles);
+DECL_HANDLER(get_window_rectangles);
+DECL_HANDLER(get_windows_offset);
 DECL_HANDLER(set_window_property);
 DECL_HANDLER(remove_window_property);
 DECL_HANDLER(get_window_property);
@@ -333,6 +336,9 @@ static const req_handler req_handlers[REQ_NB_REQUESTS] =
     (req_handler)req_get_window_parents,
     (req_handler)req_get_window_children,
     (req_handler)req_get_window_tree,
+    (req_handler)req_set_window_rectangles,
+    (req_handler)req_get_window_rectangles,
+    (req_handler)req_get_windows_offset,
     (req_handler)req_set_window_property,
     (req_handler)req_remove_window_property,
     (req_handler)req_get_window_property,
diff --git a/server/trace.c b/server/trace.c
index f4ec2d7d7aa..1d3330ed398 100644
--- a/server/trace.c
+++ b/server/trace.c
@@ -43,6 +43,12 @@ static void dump_uints( const int *ptr, int len )
     fputc( '}', stderr );
 }
 
+static void dump_rectangle( const void *req, const rectangle_t *rect )
+{
+    fprintf( stderr, "{%d,%d;%d,%d}",
+             rect->left, rect->top, rect->right, rect->bottom );
+}
+
 static void dump_context( const CONTEXT *context )
 {
 #ifdef __i386__
@@ -1761,6 +1767,42 @@ static void dump_get_window_tree_reply( const struct get_window_tree_request *re
     fprintf( stderr, " last_child=%08x", req->last_child );
 }
 
+static void dump_set_window_rectangles_request( const struct set_window_rectangles_request *req )
+{
+    fprintf( stderr, " handle=%08x,", req->handle );
+    fprintf( stderr, " window=" );
+    dump_rectangle( req, &req->window );
+    fprintf( stderr, "," );
+    fprintf( stderr, " client=" );
+    dump_rectangle( req, &req->client );
+}
+
+static void dump_get_window_rectangles_request( const struct get_window_rectangles_request *req )
+{
+    fprintf( stderr, " handle=%08x", req->handle );
+}
+
+static void dump_get_window_rectangles_reply( const struct get_window_rectangles_request *req )
+{
+    fprintf( stderr, " window=" );
+    dump_rectangle( req, &req->window );
+    fprintf( stderr, "," );
+    fprintf( stderr, " client=" );
+    dump_rectangle( req, &req->client );
+}
+
+static void dump_get_windows_offset_request( const struct get_windows_offset_request *req )
+{
+    fprintf( stderr, " from=%08x,", req->from );
+    fprintf( stderr, " to=%08x", req->to );
+}
+
+static void dump_get_windows_offset_reply( const struct get_windows_offset_request *req )
+{
+    fprintf( stderr, " x=%d,", req->x );
+    fprintf( stderr, " y=%d", req->y );
+}
+
 static void dump_set_window_property_request( const struct set_window_property_request *req )
 {
     fprintf( stderr, " window=%08x,", req->window );
@@ -1932,6 +1974,9 @@ static const dump_func req_dumpers[REQ_NB_REQUESTS] = {
     (dump_func)dump_get_window_parents_request,
     (dump_func)dump_get_window_children_request,
     (dump_func)dump_get_window_tree_request,
+    (dump_func)dump_set_window_rectangles_request,
+    (dump_func)dump_get_window_rectangles_request,
+    (dump_func)dump_get_windows_offset_request,
     (dump_func)dump_set_window_property_request,
     (dump_func)dump_remove_window_property_request,
     (dump_func)dump_get_window_property_request,
@@ -2069,6 +2114,9 @@ static const dump_func reply_dumpers[REQ_NB_REQUESTS] = {
     (dump_func)dump_get_window_children_reply,
     (dump_func)dump_get_window_tree_reply,
     (dump_func)0,
+    (dump_func)dump_get_window_rectangles_reply,
+    (dump_func)dump_get_windows_offset_reply,
+    (dump_func)0,
     (dump_func)dump_remove_window_property_reply,
     (dump_func)dump_get_window_property_reply,
     (dump_func)dump_get_window_properties_reply,
@@ -2204,6 +2252,9 @@ static const char * const req_names[REQ_NB_REQUESTS] = {
     "get_window_parents",
     "get_window_children",
     "get_window_tree",
+    "set_window_rectangles",
+    "get_window_rectangles",
+    "get_windows_offset",
     "set_window_property",
     "remove_window_property",
     "get_window_property",
diff --git a/server/window.c b/server/window.c
index ff9ba82db5d..1559d44928c 100644
--- a/server/window.c
+++ b/server/window.c
@@ -40,6 +40,8 @@ struct window
     user_handle_t    handle;          /* full handle for this window */
     struct thread   *thread;          /* thread owning the window */
     atom_t           atom;            /* class atom */
+    rectangle_t      window_rect;     /* window rectangle */
+    rectangle_t      client_rect;     /* client rectangle */
     int              prop_inuse;      /* number of in-use window properties */
     int              prop_alloc;      /* number of allocated window properties */
     struct property *properties;      /* window properties array */
@@ -476,6 +478,61 @@ DECL_HANDLER(get_window_tree)
 }
 
 
+/* set the window and client rectangles of a window */
+DECL_HANDLER(set_window_rectangles)
+{
+    struct window *win = get_window( req->handle );
+
+    if (win)
+    {
+        win->window_rect = req->window;
+        win->client_rect = req->client;
+    }
+}
+
+
+/* get the window and client rectangles of a window */
+DECL_HANDLER(get_window_rectangles)
+{
+    struct window *win = get_window( req->handle );
+
+    if (win)
+    {
+        req->window = win->window_rect;
+        req->client = win->client_rect;
+    }
+}
+
+
+/* get the coordinates offset between two windows */
+DECL_HANDLER(get_windows_offset)
+{
+    struct window *win;
+
+    req->x = req->y = 0;
+    if (req->from)
+    {
+        if (!(win = get_window( req->from ))) return;
+        while (win)
+        {
+            req->x += win->client_rect.left;
+            req->y += win->client_rect.top;
+            win = win->parent;
+        }
+    }
+    if (req->to)
+    {
+        if (!(win = get_window( req->to ))) return;
+        while (win)
+        {
+            req->x -= win->client_rect.left;
+            req->y -= win->client_rect.top;
+            win = win->parent;
+        }
+    }
+}
+
+
 /* set a window property */
 DECL_HANDLER(set_window_property)
 {
diff --git a/tools/make_requests b/tools/make_requests
index ade770fb556..3e2c536635e 100755
--- a/tools/make_requests
+++ b/tools/make_requests
@@ -18,6 +18,7 @@
     "handle_t"      => "%d",
     "atom_t"        => "%04x",
     "user_handle_t" => "%08x",
+    "rectangle_t"   => "&dump_rectangle",
 );
 
 my @requests = ();