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XtSetLanguageProc - set the language procedure
#include <X11/Intrinsic.h>
XtLanguageProc XtSetLanguageProc(XtAppContext app_context, XtLanguage-
Proc proc, XtPointer client_data);
app_context
Specifies the application context in which the language pro-
cedure 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.
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 regis-
tered. 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 sub-
sequent 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 XtWarn-
ing.
o Calls XSupportsLocale to verify that the current locale is sup-
ported. 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.
X Toolkit Intrinsics – C Language Interface
Xlib - C Language X Interface
X Version 11 libXt 1.1.5.2 XtSetLanguageProc(3)