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XtSetLanguageProc(3Xt)		XT FUNCTIONS	       XtSetLanguageProc(3Xt)



NAME
  XtSetLanguageProc - set the language procedure

SYNTAX
  Widget XtSetLanguageProc(app_context, proc, client_data)
	XtAppContext app_context;
	XtLanguageProc proc;
	XtPointer client_data;

ARGUMENTS

  app_context
	    Specifies the application context in which the language procedure
	    is to be used, or NULL.

  proc	    Specifies the language procedure, or NULL.

  client_data
	    Specifes addional client data to be passed to the language pro-
	    cedure when it is called.

DESCRIPTION
  XtSetLanguageProc sets the language procedure that will be called from
  XtDisplayInitialize for all subsequent Displays initialized in the speci-
  fied application context. If app_context is NULL, the specified language
  procedure is registered in all application contexts created by the calling
  process, including any future application contexts that may be created. If
  proc is NULL a default language procedure is registered.  XtSetLanguageProc
  returns the previously registered language procedure. If a language pro-
  cedure has not yet been registered, the return value is unspecified but if
  this return value is used in a subsequent call to XtSetLanguageProc, it
  will bcause the default language procedure to be registered.

  The default language procdure does the following:

  +    Sets the locale according to the environment. On ANSI C-based systems
       this is done by calling setlocale( LC_ALL, language ). If an error is
       encountered a warning message is issued with XtWarning.

  +    Calls XSupportsLocale to verify that the current locale is supported.
       If the locale is not supported, a warning message is issued with
       XtWarning and the locale is set to ``C''.

  +    Calls XSetLocaleModifiers specifying the empty string.

  +    Returns the value of the current locale. On ANSI C-based systems this
       is the return value from a final call to setlocal( LC_ALL, NULL ).

  A client wishing to use this mechanism to establish locale can do so by
  calling XtSetLanguageProc prior to XtDisplayInitialize.



SEE ALSO
  X Toolkit Intrinsics - C Language Interface
  Xlib - C Language X Interface



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