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curs_delch(3x) — Linux manual page

NAME | SYNOPSIS | DESCRIPTION | RETURN VALUE | NOTES | PORTABILITY | HISTORY | SEE ALSO | COLOPHON 

curs_delch(3X)                Library calls                curs_delch(3X)

NAME         top

       delch, wdelch, mvdelch, mvwdelch - delete a character from a
       curses window

SYNOPSIS         top

       #include <curses.h>

       int delch(void);
       int wdelch(WINDOW * win);
       int mvdelch(int y, int x);
       int mvwdelch(WINDOW * win, int y, int x);

DESCRIPTION         top

       wdelch deletes the character at the cursor position in win.  It
       moves all characters to the right of the cursor on the same line
       to the left one position and replaces the contents of the
       rightmost position on the line with the window's background
       character; see bkgd(3X) (wide-character API users: bkgrnd(3X)).
       The cursor position does not change (after moving to (y, x), if
       specified).  ncurses(3X) describes the variants of this function.

RETURN VALUE         top

       These functions return OK on success and ERR on failure.

       In ncurses, these functions fail if

       •   the curses screen has not been initialized, or

       •   (for functions taking a WINDOW pointer argument) win is a null
           pointer.

       Functions prefixed with “mv” first perform cursor movement and
       fail if the position (y, x) is outside the window boundaries.

NOTES         top

       delch, mvdelch, and mvwdelch may be implemented as macros.

       A terminal's delete_character (dch1) capability is not necessarily
       employed.

PORTABILITY         top

       X/Open Curses Issue 4 describes these functions.  It specifies no
       error conditions for them.

       SVr4 describes a successful return value only as “an integer value
       other than ERR”.

HISTORY         top

       SVr2 (1984) introduced wdelch.

SEE ALSO         top

       curses(3X)

COLOPHON         top

       This page is part of the ncurses (new curses) project.
       Information about the project can be found at 
       ⟨https://invisible-island.net/ncurses/ncurses.html⟩.  If you have a
       bug report for this manual page, send it to bug-ncurses@gnu.org.
       This page was obtained from the tarball ncurses-6.6.tar.gz fetched
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       send a mail to man-pages@man7.org

ncurses @NCURSES_MAJOR@.@NCU... 2025-04-05                 curs_delch(3X)

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