diff --git a/lib/ext/fixes.js b/lib/ext/fixes.js
index c6711b3..434a8ee 100644
--- a/lib/ext/fixes.js
+++ b/lib/ext/fixes.js
@@ -48,6 +48,11 @@ exports.requireExt = function(display, callback)
             X.pack_stream.flush();
         };
 
+        ext.WindowRegionKind = {
+            Bounding : 0,
+            Clip : 1
+        };
+
         ext.CreateRegion = function(region, rects) {
             X.seq_num ++;
             var format = 'CCSL';
@@ -63,6 +68,12 @@ exports.requireExt = function(display, callback)
             X.pack_stream.pack(format, args);
             X.pack_stream.flush();
         }
+        
+        ext.CreateRegionFromWindow = function(region, wid, kind) {
+            X.seq_num ++;
+            X.pack_stream.pack('CCSLLCxxx', [ ext.majorOpcode, 7, 4, region, wid, kind ]);
+            X.pack_stream.flush();
+        }
 
         ext.DestroyRegion = function(region) {
             X.seq_num ++;