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curs_insch 3x 2025-02-01 ncurses 6.5 Library calls

curs_insch(3x)                   Library calls                  curs_insch(3x)




NAME

       insch,  winsch,  mvinsch,  mvwinsch  -  insert  a curses character in a
       window


SYNOPSIS

       #include <curses.h>

       int insch(chtype ch);
       int winsch(WINDOW * win, chtype ch);
       int mvinsch(int y, int x, chtype ch);
       int mvwinsch(WINDOW * win, int y, int x, chtype ch);


DESCRIPTION

       These functions insert the curses character ch 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

       insch, mvinsch, and mvwinsch 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.

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


HISTORY

       SVr2 (1984) introduced winsch.


SEE ALSO

       curs_ins_wch(3x)  describes  comparable functions in the wide-character
       curses configuration.

       curses(3x), terminfo(5)



ncurses 6.5                       2025-02-01                    curs_insch(3x)