diff -r 44897b1ba4e2 -r 15b51d278bf0 gui/graph_displayer_canvas.h
--- a/gui/graph_displayer_canvas.h	Wed Jul 27 11:19:35 2005 +0000
+++ b/gui/graph_displayer_canvas.h	Wed Jul 27 11:35:13 2005 +0000
@@ -110,9 +110,9 @@
   int getActualTool();
 
   ///creates a new Nodemap
-  void addNewNodeMap(double,std::string);
+  int addNewNodeMap(double,std::string);
   ///creates a new Edgemap
-  void addNewEdgeMap(double,std::string);
+  int addNewEdgeMap(double,std::string);
 
 private:
   ///Deletes the given element.