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curs_ins_wch 3x 2025-01-18 ncurses 6.5 Library calls

curs_ins_wch(3x)                 Library calls                curs_ins_wch(3x)

NAME

       ins_wch,  wins_wch,  mvins_wch,  mvwins_wch  -  insert a curses complex
       character 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 the pointer is NULL.

       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
       employed.

PORTABILITY

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

HISTORY

       These  functions  were  initially  specified  by  X/Open Curses Issue 4
       (1995).  The System V Interface Definition Version 4 of the  same  year
       specified  a function named winswch (and the usual variants).  This was
       a later addition 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.