ins_wch(3NCURSES) Library calls ins_wch(3NCURSES)
NAME
ins_wch, wins_wch, mvins_wch, mvwins_wch - insert a curses complex char-
acter in a window
SYNOPSIS
#include <curses.h>
int ins_wch(const cchar_t * wch);
int wins_wch(WINDOW * win, const cchar_t * wch);
int mvins_wch(int y, int x, const cchar_t * wch);
int mvwins_wch(WINDOW * win, int y, int x, const cchar_t * wch);
DESCRIPTION
These functions insert the curses complex character wch at the cursor in
the specified window win (or stdscr). The character previously at the
cursor and any to its right move one cell to the right; the rightmost
character on the line is discarded. The cursor does not advance.
RETURN VALUE
These functions return OK on success and ERR on failure.
Functions taking a WINDOW pointer argument fail if 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
ins_wch, mvins_wch, and mvwins_wch may be implemented as macros.
A terminal's insert_character (ich1) capability is not necessarily em-
ployed.
PORTABILITY
X/Open Curses Issue 4 describes these functions. It specifies no error
conditions for them.
HISTORY
X/Open Curses Issue 4 (1995) initially specified these functions. The
System V Interface Definition Version 4 of the same year specified a
function named winswch (and the usual variants). This was a later addi-
tion to SVr4.x, not appearing in the first SVr4 (1989). It differed
from X/Open's later wins_wch in that it took an argument of type chtype
instead of cchar_t.
SEE ALSO
insch(3NCURSES) describes comparable functions in the non-wide-character
curses configuration.
ncurses(3NCURSES), terminfo(5)
ncurses 6.5 2025-02-01 ins_wch(3NCURSES)
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