From 881672563cb65777d23c9dbe2c24de5214c82eb3 Mon Sep 17 00:00:00 2001
From: Claudio Sacerdoti Coen <claudio.sacerdoticoen@unibo.it>
Date: Fri, 21 Dec 2018 21:47:51 +0100
Subject: [PATCH] Fix dialog win

It used to be destroyed when closed the first time
---
 matita/matita/matitaGui.ml | 1 +
 1 file changed, 1 insertion(+)

diff --git a/matita/matita/matitaGui.ml b/matita/matita/matitaGui.ml
index d8de328ef..b294af25d 100644
--- a/matita/matita/matitaGui.ml
+++ b/matita/matita/matitaGui.ml
@@ -461,6 +461,7 @@ class gui () =
         ~website:"http://matita.cs.unibo.it"
         ()
       in
+      ignore(about_dialog#event#connect#delete (fun _ -> true));
       ignore(about_dialog#connect#response (fun _ ->about_dialog#misc#hide ()));
       connect_menu_item main#contentsMenuItem (fun () ->
         if 0 = Sys.command "which gnome-help" then
-- 
2.39.2