NAME¶
insch,
winsch,
mvinsch,
mvwinsch - insert a
character before cursor in a
curses 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 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.
RETURN VALUE¶
All routines that return an integer return
ERR upon failure and OK (SVr4
specifies only "an integer value other than
ERR") upon
successful completion, unless otherwise noted in the preceding routine
descriptions.
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.
NOTES¶
These routines do not necessarily imply use of a hardware insert character
feature.
Note that
insch,
mvinsch, and
mvwinsch may be macros.
PORTABILITY¶
These functions are described in the XSI Curses standard, Issue 4.
SEE ALSO¶
ncurses(3NCURSES).
Comparable functions in the wide-character (ncursesw) library are described in
ins_wch(3NCURSES).