+
+#if 0
+// This class is a mixin that provides storage and management of "client
+// data." The client data stored can either be a pointer to a wxClientData
+// object in which case it is managed by the container (i.e. it will delete
+// the data when it's destroyed) or an untyped pointer which won't be deleted
+// by the window - but not both of them
+