NAME

       XtSetLanguageProc - set the language procedure

SYNTAX

       Widget XtSetLanguageProc(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
                 Specifies additional 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 Displays 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 subsequent call to XtSetLanguageProc, it will cause the default
       language procedure to be registered.

       The default language procedure 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 setlocale( 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