diff --git a/common/rfb/PixelTransformer.cxx b/common/rfb/PixelTransformer.cxx
index ea43d9c..c737f4d 100644
--- a/common/rfb/PixelTransformer.cxx
+++ b/common/rfb/PixelTransformer.cxx
@@ -1,5 +1,6 @@
 /* Copyright (C) 2002-2005 RealVNC Ltd.  All Rights Reserved.
  * Copyright 2011 Pierre Ossman <ossman@cendio.se> for Cendio AB
+ * Copyright (C) 2011 D. R. Commander.  All Rights Reserved.
  * 
  * This is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
@@ -320,3 +321,8 @@
              outPF, out, outStride,
              inRect.width(), inRect.height());
 }
+
+bool PixelTransformer::willTransform(void)
+{
+  return transFn != NULL && transFn != noTransFn;
+}