for et in self.evtType:
             target.Connect(id1, id2, et, function)
 
+
+    def Unbind(self, target, id1, id2):
+        """Remove an event binding."""
+        success = 0
+        for et in self.evtType:
+            success += target.Disconnect(id1, id2, et)
+        return success != 0
+
     
     def __call__(self, *args):
         """