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 procedure when it is called.

DESCRIPTION
       XtSetLanguageProc sets the language procedure that will be
       called from XtDisplayInitialize for all subsequent Dis-
       plays initialized in the specified 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
       procedure has not yet been registered, the return value is
       unspecified but if this return value is used in a subse-
       quent call to XtSetLanguageProc, it will bcause the
       default language procedure to be registered.

       The default language procdure does the following:

       +o    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.

       +o    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''.

       +o    Calls XSetLocaleModifiers specifying the empty
            string.

       +o    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 XtDis-
       playInitialize.

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