+ GtkTreeIter y_iter; // Access quickly to y pos.
+ // DrawContext *draw_context;
+ /* Information on current drawing */
+ struct {
+ guint over;
+ gboolean over_used; /* inform the user that information is incomplete */
+ gboolean over_marked; /* inform the user that information is incomplete */
+ guint middle;
+ gboolean middle_used; /* inform the user that information is incomplete */
+ gboolean middle_marked;/* inform the user that information is incomplete */
+ guint under;
+ gboolean under_used; /* inform the user that information is incomplete */
+ gboolean under_marked; /* inform the user that information is incomplete */
+ } x; /* last x position saved by after state update */
+
+ // FIXME : add info on last event ?