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XtSetLanguageProc(3)             XT FUNCTIONS             XtSetLanguageProc(3)


NAME

       XtSetLanguageProc - set the language procedure


SYNTAX

       #include <X11/Intrinsic.h>

       XtLanguageProc 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:

       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 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

X Version 11                      libXt 1.2.1             XtSetLanguageProc(3)

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