xsupportslocale(3) hpux man page | unix.com

XSupportsLocale()														 XSupportsLocale()

Name
  XSupportsLocale - determine locale support.

Synopsis
  Bool XSupportsLocale( )

Returns
  True if supported, else False.

Availability
  Release 5 and later.

Description
  XSupportsLocale()  returns  True  if Xlib functions are capable of operating under the current locale.  If XSupportsLocale() returns False,
  the client should usually switch to a supported locale or exit.  When the current locale is not supported, some Xlib routines  will  return
  the status XLocaleNotSupported, and others will silently operate in the default C locale.

See Also
  XSetLocaleModifiers().

Xlib - Locale Management													 XSupportsLocale()