CLEAR(3XCURSES) X/Open Curses Library Functions CLEAR(3XCURSES)

NAME

clear, erase, wclear, werase - clear a window

SYNOPSIS

cc [ flag... ] file... -I /usr/xpg4/include -L /usr/xpg4/lib \
-R /usr/xpg4/lib -lcurses [ library... ]

c89 [ flag... ] file... -lcurses [ library... ]

#include <curses.h>

int clear(void);


int erase(void);


int wclear(WINDOW *win);


int werase(WINDOW *win);

DESCRIPTION

The clear() and erase() functions clear stdscr, destroying its
previous contents. The wclear() and werase() functions perform the
same action, but clear the window specified by win instead of
stdscr.


The clear() and wclear() functions also call the clearok() function.
This function clears and redraws the entire screen on the next call
to refresh(3XCURSES) or wrefresh(3XCURSES) for the window.


The current background character (and attributes) is used to clear
the screen.

PARAMETERS

win
Is a pointer to the window that is to be cleared.

ERRORS

OK
Successful completion.


ERR
An error occurred.

ATTRIBUTES

See attributes(7) for descriptions of the following attributes:


+--------------------+-----------------+
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+--------------------+-----------------+
|Interface Stability | Standard |
+--------------------+-----------------+
|MT-Level | Unsafe |
+--------------------+-----------------+

SEE ALSO

bkgdset(3XCURSES), clearok(3XCURSES), clrtobot(3XCURSES),
clrtoeol(3XCURSES), doupdate(3XCURSES), libcurses(3XCURSES),
refresh(3XCURSES), wrefresh(3XCURSES), attributes(7), standards(7)

June 5, 2002 CLEAR(3XCURSES)