MirOS Manual: XSetLocaleModifiers(3), XSupportsLocale(3)


XSupportsLocal(3X11)     XLIB FUNCTIONS      XSupportsLocal(3X11)

NAME

     XSupportsLocale, XSetLocaleModifiers - determine locale sup-
     port and configure locale modifiers

SYNTAX

     Bool XSupportsLocale(void);

     char *XSetLocaleModifiers(char *modifier_list);

ARGUMENTS

     modifier_list
               Specifies the modifiers.

DESCRIPTION

     The XSupportsLocale function returns True if Xlib functions
     are capable of operating under the current locale. If it
     returns False, Xlib locale-dependent functions for which the
     XLocaleNotSupported return status is defined will return
     XLocaleNotSupported. Other Xlib locale-dependent routines
     will operate in the ``C'' locale.

     The XSetLocaleModifiers function sets the X modifiers for
     the current locale setting. The modifier_list argument is a
     null-terminated string of the form ``{@category=value}'',
     that is, having zero or more concatenated
     ``@category=value'' entries, where category is a category
     name and value is the (possibly empty) setting for that
     category. The values are encoded in the current locale.
     Category names are restricted to the POSIX Portable Filename
     Character Set.

     The local host X locale modifiers announcer (on POSIX-
     compliant systems, the XMODIFIERS environment variable) is
     appended to the modifier_list to provide default values on
     the local host. If a given category appears more than once
     in the list, the first setting in the list is used. If a
     given category is not included in the full modifier list,
     the category is set to an implementation-dependent default
     for the current locale. An empty value for a category expli-
     citly specifies the implementation-dependent default.

     If the function is successful, it returns a pointer to a
     string. The contents of the string are such that a subse-
     quent call with that string (in the same locale) will
     restore the modifiers to the same settings. If modifier_list
     is a NULL pointer, XSetLocaleModifiers also returns a
     pointer to such a string, and the current locale modifiers
     are not changed.

     If invalid values are given for one or more modifier
     categories supported by the locale, a NULL pointer is
     returned, and none of the current modifiers are changed.

XFree86                   Version 4.5.0                         1

XSupportsLocal(3X11)     XLIB FUNCTIONS      XSupportsLocal(3X11)

     At program startup, the modifiers that are in effect are
     unspecified until the first successful call to set them.
     Whenever the locale is changed, the modifiers that are in
     effect become unspecified until the next successful call to
     set them. Clients should always call XSetLocaleModifiers
     with a non-NULL modifier_list after setting the locale
     before they call any locale-dependent Xlib routine.

     The only standard modifier category currently defined is
     ``im'', which identifies the desired input method. The
     values for input method are not standardized. A single
     locale may use multiple input methods, switching input
     method under user control. The modifier may specify the ini-
     tial input method in effect or an ordered list of input
     methods. Multiple input methods may be specified in a single
     im value string in an implementation-dependent manner.

     The returned modifiers string is owned by Xlib and should
     not be modified or freed by the client. It may be freed by
     Xlib after the current locale or modifiers are changed.
     Until freed, it will not be modified by Xlib.

SEE ALSO

     Xlib - C Language X Interface

XFree86                   Version 4.5.0                         2

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