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+(* Copyright (C) 2004, HELM Team.
+ *
+ * This file is part of HELM, an Hypertextual, Electronic
+ * Library of Mathematics, developed at the Computer Science
+ * Department, University of Bologna, Italy.
+ *
+ * HELM is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * HELM is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with HELM; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston,
+ * MA 02111-1307, USA.
+ *
+ * For details, see the HELM World-Wide-Web page,
+ * http://helm.cs.unibo.it/
+ *)
+
+(** {2 Gtk helpers} *)
+
+ (** given a window and a check menu item it links the two so that the former
+ * is only hidden on delete and the latter toggle show/hide of the former *)
+val toggle_visibility:
+ win:GWindow.window -> check:GMenu.check_menu_item -> unit
+
+val toggle_win:
+ ?check:GMenu.check_menu_item -> GWindow.window -> (unit -> unit)
+
+val add_key_binding: Gdk.keysym -> (unit -> 'a) -> GBin.event_box -> unit
+