Страницы справочника OS X

Эта страница руководства является частью версии 5.0 Инструментов XCode

Читать страницы руководства

curs_getcchar(3X)                                                                          curs_getcchar(3X)



NAME
       getcchar, setcchar - Get a wide character string and rendition from a cchar_t or set a cchar_t from a
       wide-character 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:

       -    Extracts information from a cchar_t value wcval

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

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

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

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

       -    Obtains the number of wide characters pointed to by wcval

       -    Does not change the data referenced by attrs or color_pair

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

       -    The character attributes in attrs

       -    The color pair in color_pair

       -    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  charac-ters characters
            ters 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 argument.  If wcval is constructed by any other means, the effect is unspecified.

RETURN VALUES
       When wch is a null pointer, getcchar returns the number of wide characters referenced by wcval.

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

       Upon successful completion, setcchar returns OK.  Otherwise, it returns ERR.

SEE ALSO
       Functions: curs_attr(3X), curs_color(3X), curses(3X), wcwidth(3).



                                                                                           curs_getcchar(3X)