XtSetLanguageProc(3Xt) XtSetLanguageProc(3Xt)
NAME
XtSetLanguageProc - set the language procedure
SYNOPSIS
Widget XtSetLanguageProc(app_context, proc, client_data)
XtAppContext app_context;
XtLanguageProc proc;
XtPointer client_data;
ARGUMENTS
Specifies the application context in which the language procedure is to be used, or NULL. Specifies the language procedure, or NULL.
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 reg-
istered. 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 because the default lan-
guage 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 ver-
ify 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
XtSetLanguageProc(3Xt)
