curs_insch(3x) Library calls curs_insch(3x)
insch, winsch, mvinsch, mvwinsch - insert a curses character in a
window
#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);
These routines insert the character ch before the character under the
cursor. All characters to the right of the cursor are moved one space
to the right, with the possibility of the rightmost character on the
line being lost. The insertion operation does not change the cursor
position.
These routines return the integer ERR upon failure and an OK (SVr4
specifies only "an integer value other than ERR") upon successful
completion.
Functions with a "mv" prefix first perform a cursor movement using
wmove, and return an error if the position is outside the window, or if
the window pointer is null.
These routines do not necessarily imply use of a hardware insert
character feature.
Note that insch, mvinsch, and mvwinsch may be macros.
These functions are described in the XSI Curses standard, Issue 4.
curses(3x)
Comparable functions in the wide-character (ncursesw) library are
described in curs_ins_wch(3x).
ncurses 6.4 2023-12-16 curs_insch(3x)