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|
(***********************************************************************)
(* *)
(* MLTk, Tcl/Tk interface of OCaml *)
(* *)
(* Jacques Garrigue, Nagoya University Mathematics Dept. *)
(* *)
(* Copyright 2004 Institut National de Recherche en Informatique et *)
(* en Automatique and Kyoto University. All rights reserved. *)
(* This file is distributed under the terms of the GNU Library *)
(* General Public License, with the special exception on linking *)
(* described in file LICENSE found in the OCaml source tree. *)
(* *)
(***********************************************************************)
(* $Id$ *)
(** Helper functions for using LablTk with threads.
To use, add tkthread.cmo or tkthread.cmx to your command line *)
(** Start the main loop in a new GUI thread. Do not use recursively. *)
val start : unit -> Thread.t
(** The actual function executed in the GUI thread *)
val thread_main : unit -> unit
(** The toplevel widget (an alias of [Widget.default_toplevel]) *)
val top : Widget.toplevel Widget.widget
(** Jobs are needed for Windows, as you cannot do GUI work from
another thread. This is apparently true on OSX/Aqua too.
And even using X11 some calls need to come from the main thread.
The basic idea is to either use async (if you don't need a result)
or sync whenever you call a Tk related function from another thread
(for instance with the threaded toplevel).
With sync, beware of deadlocks!
*)
(** Add an asynchronous job (to do in the GUI thread) *)
val async : ('a -> unit) -> 'a -> unit
(** Add a synchronous job (to do in the GUI thread).
Raise [Failure "Tkthread.sync"] if there is no such thread. *)
val sync : ('a -> 'b) -> 'a -> 'b
(** Whether the current thread is the GUI thread.
Note that when using X11 it is generally safe to call
most Tk functions from other threads too. *)
val gui_safe : unit -> bool
(** Whether a GUI thread is running *)
val running : unit -> bool
|
