operates in that language without changes to the binary. An internationalized application must display all of its text in
the user's language and accept textual input in that same language. It must also display dates, times, and numbers in
the appropriate format for the language environment.
X internationalization is based on the ANSI−C internationalization model. This approach is based on the concept of
localization, whereby an application uses a library that reads a customizing database at startup time. This database
contains information about the characteristics of every locale that is supported by the system. When an application
establishes its locale by calling setlocale(), the library customizes the behavior of various routines based on the
locale. See the Third Edition of Volume One, Xlib Programming Manual, for a complete description of the concepts
and implementation of X internationalization.
Xt support of internationalization is trivial in most applications; the only additional code needed is a call to
XtSetLanguageProc() before the toolkit is initialized. XtSetLanguageProc() sets the language procedure
that is used to set the locale of an application. The first argument to the routine specifies an application context, the
second argument specifies the language procedure, and the third parameter specifies additional data that is passed to
the language procedure when it is called. Since the language procedure is responsible for setting the locale, an Xt
application does not call ...