delch, wdelch, mvdelch, mvwdelch - delete character
under the cursor in a curses window
#include <ncurses/curses.h>
int delch(void);
int wdelch(WINDOW *win);
int mvdelch(int y, int x);
int mvwdelch(WINDOW *win, int y, int
x );
These routines delete the character under the cursor; all characters to the
right of the cursor on the same line are moved to the left one position and
the last character on the line is filled with a blank. The cursor position
does not change (after moving to y, x, if specified). (This does
not imply use of the hardware delete character feature.)
All 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.
Note that delch, mvdelch, and mvwdelch may be macros.
These functions are described in the XSI Curses standard, Issue 4. The standard
specifies that they return ERR on failure, but specifies no error
conditions.