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curs_getcchar 3x



curs_getcchar(3x)                                     curs_getcchar(3x)




NAME

       getcchar,  setcchar - Get a wide character string and ren-
       dition from a cchar_t or set a cchar_t from a wide-charac-
       ter string


SYNOPSIS

       #include <curses.h>

       int getcchar(
               const cchar_t *wcval,
               wchar_t *wch,
               attr_t *attrs,
               short *color_pair,
               void *opts );

       int setcchar(
               cchar_t *wcval,
               const wchar_t *wch,
               const attr_t attrs,
               short color_pair,
               void *opts );


DESCRIPTION

       The  getcchar  function  gets  a wide-character string and
       rendition from a cchar_t argument.  When wch is not a null
       pointer, the getcchar function does the following:

       o   Extracts information from a cchar_t value wcval

       o   Stores   the  character  attributes  in  the  location
           pointed to by attrs

       o   Stores the color-pair in the location  pointed  to  by
           color_pair

       o   Stores  the  wide-character  string, characters refer-
           enced by wcval, into the array pointed to by wch.

       When wch is a null pointer, the getcchar function does the
       following:

       o   Obtains  the  number  of wide characters pointed to by
           wcval

       o   Does not  change  the  data  referenced  by  attrs  or
           color_pair

       The  setcchar function initializes the location pointed to
       by wcval by using:

       o   The character attributes in attrs

       o   The color pair in color_pair

       o   The wide-character string  pointed  to  by  wch.   The
           string  must  be L'\0' terminated, contain at most one
           spacing character, which must be the first.

           Up to CCHARW_MAX-1 nonspacing characters  may  follow.
           Additional nonspacing characters are ignored.

           The  string  may  contain  a  single control character
           instead.  In that case, no nonspacing  characters  are
           allowed.


NOTES

       The  opts argument is reserved for future use.  Currently,
       an application must provide a null pointer as opts.

       The wcval argument may be a value generated by a  call  to
       setcchar  or by a function that has a cchar_t output argu-
       ment.  If wcval is constructed by  any  other  means,  the
       effect is unspecified.


RETURN VALUE

       When wch is a null pointer, getcchar returns the number of
       wide characters referenced by wcval, including one  for  a
       trailing null.

       When  wch  is not a null pointer, getcchar returns OK upon
       successful completion, and ERR otherwise.

       Upon successful completion, setcchar returns  OK.   Other-
       wise, it returns ERR.


SEE ALSO

       Functions:   curs_attr(3x),   curs_color(3x),  curses(3x),
       wcwidth(3).



                                                      curs_getcchar(3x)

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