X-Git-Url: http://matita.cs.unibo.it/gitweb/?a=blobdiff_plain;f=helm%2Fsoftware%2Fmatita%2FlablGraphviz.mli;h=7dcedbf7547870feab94b187cf033a3a533ee31b;hb=be7c458d2ffc4669891f7c8f3e4e80399d4157f7;hp=ca5c7a02b5768856d6401d30cd701bac7dd24962;hpb=fb8e346faf0b390cd8e81376e0dad8333547657a;p=helm.git

diff --git a/helm/software/matita/lablGraphviz.mli b/helm/software/matita/lablGraphviz.mli
index ca5c7a02b..7dcedbf75 100644
--- a/helm/software/matita/lablGraphviz.mli
+++ b/helm/software/matita/lablGraphviz.mli
@@ -28,6 +28,8 @@
 (** {1 LablGtk "widget" for rendering Graphviz graphs and connecting to clicks
  * on nodes, edges, ...} *)
 
+type attribute = string * string  (* <key, value> pair *)
+
 class type graphviz_widget =
   object
 
@@ -45,7 +47,7 @@ class type graphviz_widget =
      * (e.g.: [ "shape","rect"; "href","http://foo.bar.com/";
      *          "title","foo"; "alt","description"; "coords","41,6,113,54" ] *)
     method connect_href:
-      (GdkEvent.Button.t -> (string * string) list -> unit) -> unit
+      (GdkEvent.Button.t -> attribute list -> unit) -> unit
 
       (** {3 low level access to embedded widgets}
        * Containment hierarchy: