# curs_inch 3x

    curs_inch(3x)                                                    curs_inch(3x)

## NAME

           inch,  winch,  mvinch,  mvwinch - get a character and attributes from a
           curses window

## SYNOPSIS

           #include <curses.h>

           chtype inch(void);
           chtype winch(WINDOW *win);
           chtype mvinch(int y, int x);
           chtype mvwinch(WINDOW *win, int y, int x);

## DESCRIPTION

           These routines return the character, of type  chtype,  at  the  current
           position in the named window.  If any attributes are set for that posi-
           tion, their values  are  OR'ed  into  the  value  returned.   Constants
           defined  in <curses.h> can be used with the & (logical AND) operator to
           extract the character or attributes alone.

### Attributes

           The following bit-masks may  be  AND-ed  with  characters  returned  by
           winch.

           A_CHARTEXT     Bit-mask to extract character
           A_ATTRIBUTES   Bit-mask to extract attributes
           A_COLOR        Bit-mask to extract color-pair field information

## RETURN VALUE

           Functions  with  a  "mv"  prefix  first perform a cursor movement using
           wmove, and return an error if the position is outside the window, or if
           the window pointer is null.

           The  winch  function  does  not  return an error if the window contains
           characters larger than 8-bits (255).  Only the low-order 8 bits of  the
           character are used by winch.

## NOTES

           Note that all of these routines may be macros.

## PORTABILITY

           These functions are described in the XSI Curses standard, Issue 4.

           Very  old systems (before standardization) provide a different function
           with the same name:

           o   The winch function was part of the  original  BSD  curses  library,
               which   stored   a  7-bit  character  combined  with  the  standout
               attribute.

               In BSD curses, winch returned only the character  (as  an  integer)
               with the standout attribute removed.

           o   System  V  curses  added support for several video attributes which
               could be combined with characters in the window.

               Reflecting this improvement, the function was altered to return the
               character combined with all video attributes in a chtype value.

           X/Open Curses does not specify the size and layout of attributes, color
           and character values in chtype; it is  implementation-dependent.   This
           implementation  uses 8 bits for character values.  An application using
           more bits, e.g., a Unicode value, should use the wide-character equiva-
           lents to these functions.

## SEE ALSO

           curses(3x)
                gives an overview of the WINDOW and chtype data types.

           curs_attr(3x)
                goes  into more detail, pointing out portability problems and con-
                straints on the use of chtype for returning window information.

           curs_in_wch(3x)
                describes comparable functions for the  wide-character  (ncursesw)
                library.

                                                                     curs_inch(3x)