otherlibs/labltk/frx/frx_after.ml

   1 (***********************************************************************)
   2 (*                                                                     *)
   3 (*                 MLTk, Tcl/Tk interface of Objective Caml            *)
   4 (*                                                                     *)
   5 (*    Francois Rouaix, Francois Pessaux, Jun Furuse and Pierre Weis    *)
   6 (*               projet Cristal, INRIA Rocquencourt                    *)
   7 (*            Jacques Garrigue, Kyoto University RIMS                  *)
   8 (*                                                                     *)
   9 (*  Copyright 2002 Institut National de Recherche en Informatique et   *)
  10 (*  en Automatique and Kyoto University.  All rights reserved.         *)
  11 (*  This file is distributed under the terms of the GNU Library        *)
  12 (*  General Public License, with the special exception on linking      *)
  13 (*  described in file LICENSE found in the Objective Caml source tree. *)
  14 (*                                                                     *)
  15 (***********************************************************************)
  16 open Protocol
  17 let idle f =
  18   let id = new_function_id () in
  19   let wrapped _ =
  20     clear_callback id; (* do it first in case f raises exception *)
  21     f() in
  22   Hashtbl.add callback_naming_table id wrapped;
  23     tkCommand [| TkToken "after"; TkToken "idle";
  24                  TkToken ("camlcb "^ string_of_cbid id) |]