1 files changed, 2 insertions, 0 deletions
diff --git a/src/GsWidget.H b/src/GsWidget.H
index 370de14..cc4e9fd 100644
--- a/src/GsWidget.H
+++ b/src/GsWidget.H
@@ -71,6 +71,8 @@ public:
 
   int next();
 
+  int prev();
+
   int handleX11(int ev);
 
   int zoom(int p);