DOUPDATE(3XCURSES) X/Open Curses Library Functions DOUPDATE(3XCURSES)
doupdate, refresh, wnoutrefresh, wrefresh - refresh windows and lines
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 doupdate(void);
int refresh(void);
int wnoutrefresh(WINDOW *win);
int wrefresh(WINDOW *win);
The refresh() and wrefresh() functions copy stdscr and win,
respectively, to the terminal screen. These functions call the
wnoutrefresh() function to copy the specified window to curscr and
the doupdate() function to do the actual update. The physical
cursor is mapped to the same position as the logical cursor of the
last window to update curscr unless leaveok(3XCURSES) is enabled (in
which case, the cursor is placed in a position that X/Open Curses
finds convenient).
When outputting several windows at once, it is often more efficient
to call the wnoutrefresh() and doupdate() functions directly. A call
to wnoutrefresh() for each window, followed by only one call to
doupdate() to update the screen, results in one burst of output,
fewer characters sent, and less CPU time used.
If the win parameter to wrefresh() is the global variable curscr, the
screen is immediately cleared and repainted from scratch.
For details on how the wnoutrefresh() function handles overlapping
windows with broad glyphs, see the Overlapping Windows section of the
curses(3XCURSES) reference manual page.
win
Is a pointer to the window in which to refresh.
On success, these functions return OK. Otherwise, they return ERR.
None.
See attributes(7) for descriptions of the following attributes:
+--------------------+-----------------+
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+--------------------+-----------------+
|Interface Stability | Standard |
+--------------------+-----------------+
|MT-Level | Unsafe |
+--------------------+-----------------+
clearok(3XCURSES), curses(3XCURSES), libcurses(3XCURSES),
prefresh(3XCURSES), redrawwin(3XCURSES), attributes(7), standards(7)
June 5, 2002 DOUPDATE(3XCURSES)
NAME
doupdate, refresh, wnoutrefresh, wrefresh - refresh windows and lines
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 doupdate(void);
int refresh(void);
int wnoutrefresh(WINDOW *win);
int wrefresh(WINDOW *win);
DESCRIPTION
The refresh() and wrefresh() functions copy stdscr and win,
respectively, to the terminal screen. These functions call the
wnoutrefresh() function to copy the specified window to curscr and
the doupdate() function to do the actual update. The physical
cursor is mapped to the same position as the logical cursor of the
last window to update curscr unless leaveok(3XCURSES) is enabled (in
which case, the cursor is placed in a position that X/Open Curses
finds convenient).
When outputting several windows at once, it is often more efficient
to call the wnoutrefresh() and doupdate() functions directly. A call
to wnoutrefresh() for each window, followed by only one call to
doupdate() to update the screen, results in one burst of output,
fewer characters sent, and less CPU time used.
If the win parameter to wrefresh() is the global variable curscr, the
screen is immediately cleared and repainted from scratch.
For details on how the wnoutrefresh() function handles overlapping
windows with broad glyphs, see the Overlapping Windows section of the
curses(3XCURSES) reference manual page.
PARAMETERS
win
Is a pointer to the window in which to refresh.
RETURN VALUES
On success, these functions return OK. Otherwise, they return ERR.
ERRORS
None.
ATTRIBUTES
See attributes(7) for descriptions of the following attributes:
+--------------------+-----------------+
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+--------------------+-----------------+
|Interface Stability | Standard |
+--------------------+-----------------+
|MT-Level | Unsafe |
+--------------------+-----------------+
SEE ALSO
clearok(3XCURSES), curses(3XCURSES), libcurses(3XCURSES),
prefresh(3XCURSES), redrawwin(3XCURSES), attributes(7), standards(7)
June 5, 2002 DOUPDATE(3XCURSES)