curs_delch(3x) Library calls curs_delch(3x)
delch, wdelch, mvdelch, mvwdelch - delete a character from a curses
window
#include <curses.h>
int delch(void);
int wdelch(WINDOW * win);
int mvdelch(int y, int x);
int mvwdelch(WINDOW * win, int y, int x);
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 blank 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.
These functions return OK on success and ERR on failure.
In ncurses, they return ERR if win is NULL.
Functions prefixed with "mv" first perform cursor movement and fail if
the position (y, x) is outside the window boundaries.
delch, mvdelch, and mvwdelch may be implemented as macros.
A terminal's delete_character (dch1) capability is not necessarily
employed.
X/Open Curses, Issue 4 describes these functions. It specifies no
error conditions for them.
SVr4 curses describes a successful return value only as "an integer
value other than ERR".
SVr2 (1984) introduced delch.
curses(3x)
ncurses 6.5 2024-07-27 curs_delch(3x)