Section: Miscellaneous Library Functions (3X)
- insert a character before cursor in a curses
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
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.
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.
These routines do not necessarily imply use of a hardware insert character
Note that insch, mvinsch, and mvwinsch may be macros.
These functions are described in the XSI Curses standard, Issue 4.
Comparable functions in the wide-character (ncursesw) library are