CURSES_REFRESH(3)					   BSD Library Functions Manual 					 CURSES_REFRESH(3)

NAME

     curses_refresh, refresh, wrefresh, wnoutrefresh, doupdate, leaveok, flushok -- curses terminal update routines

LIBRARY

     Curses Library (libcurses, -lcurses)

SYNOPSIS

     #include <curses.h>

     int
     refresh(void);

     int
     wrefresh(WINDOW *win);

     int
     wnoutrefresh(WINDOW *win);

     int
     doupdate(void);

     int
     leaveok(WINDOW *win, boolf flag);

     int
     flushok(WINDOW *win, boolf flag);

DESCRIPTION

     These functions update the terminal with the contents of stdscr or of the specified window(s).

     The refresh() function causes curses to propagate changes made to stdscr to the terminal display.	Any changes made to subwindows of stdscr
     are also propagated.

     The wrefresh() function is the same as the refresh() function, excepting that changes are propagated to the terminal from the window speci-
     fied by win.

     The wnoutrefresh() function performs the internal processing required by curses to determine what changes need to be made to synchronise the
     internal screen buffer and the terminal but does not modify the terminal display.

     The doupdate() function updates the terminal display to match the internal curses representation of the display.

     The wnoutrefresh() and doupdate() functions can be used together to speed up terminal redraws by deferring the actual terminal updates until
     after a batch of updates to multiple windows has been done.

     The refresh() function is equivalent to wnoutrefresh(stdscr) followed by doupdate().

     The leaveok() function determines whether refresh operations may leave the screen cursor in an arbitrary position on the screen.  Setting
     flag to FALSE ensures that the screen cursor is positioned at the current cursor position after a refresh operation has taken place.

     The flushok() function is used to determine whether or not the screen's output file descriptor will be flushed on refresh.  Setting flag to
     TRUE will cause the output to be flushed.

RETURN VALUES

     Functions returning pointers will return NULL if an error is detected.  The functions that return an int will return one of the following
     values:

     OK   The function completed successfully.
     ERR  An error occurred in the function.

SEE ALSO

     curses_pad(3), curses_touch(3), getch(3)

NOTES

     Calling wrefresh() on a new, unchanged window has no effect.

STANDARDS

     The NetBSD Curses library complies with the X/Open Curses specification, part of the Single Unix Specification.

HISTORY

     The Curses package appeared in 4.0BSD.

BSD
								  March 26, 2003							       BSD