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XtSetLanguageProc - set the language
procedure
- Widget XtSetLanguageProc(XtAppContext app_context, XtLanguageProc
- proc, XtPointer client_data);
- 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.
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.
X Toolkit Intrinsics - C Language Interface
Xlib - C Language X Interface
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