1 files changed, 12 insertions, 0 deletions
diff --git a/grapher/GraphStyle.hxx b/grapher/GraphStyle.hxx
index 9625f451..bea4922a 100644
--- a/grapher/GraphStyle.hxx
+++ b/grapher/GraphStyle.hxx
@@ -1,3 +1,11 @@
+// systemtap grapher
+// Copyright (C) 2009 Red Hat Inc.
+//
+// This file is part of systemtap, and is free software.  You can
+// redistribute it and/or modify it under the terms of the GNU General
+// Public License (GPL); either version 2, or (at your option) any
+// later version.
+
 #ifndef SYSTEMTAP_GRAPHSTYLE_HXX
 #define SYSTEMTAP_GRAPHSTYLE_HXX 1
 #include <tr1/memory>
@@ -48,6 +56,10 @@ namespace systemtap
   public:
     void draw(std::tr1::shared_ptr<GraphDataBase> graphData,
               Graph* graph, Cairo::RefPtr<Cairo::Context> cr);
+    virtual ssize_t dataIndexAtPoint(double x, double y,
+                                     std::tr1::shared_ptr<GraphDataBase>
+                                     graphData,
+                                     std::tr1::shared_ptr<Graph> graph);
     static GraphStyleEvent instance;
   };  
 }