NAME
curses_touch,
touchline, touchoverlap,
touchwin, untouchwin,
wtouchln, is_linetouched,
is_wintouched, redrawwin,
wredrawln, syncok,
wsyncup, wsyncdown —
curses window modification
routines
LIBRARY
library “libcurses”
SYNOPSIS
#include
<curses.h>
int
touchline(WINDOW
*win, int start,
int count);
int
touchoverlap(WINDOW
*win1, WINDOW
*win2);
int
touchwin(WINDOW
*win);
int
untouchwin(WINDOW
*win);
int
wtouchln(WINDOW
*win, int line,
int n,
boolf changed);
bool
is_linetouched(WINDOW
*win, int
line);
bool
is_wintouched(WINDOW
*win);
int
redrawwin(WINDOW
*win);
int
wredrawln(WINDOW
*win, int line,
int n);
int
syncok(WINDOW
*win);
void
wsyncup(WINDOW
*win);
void
wsyncdown(WINDOW
*win);
DESCRIPTION
These functions mark lines and windows as modified and check the modification status of lines and windows.The
touchline()
function marks count lines starting from
start in window win as having
been modified. These characters will be synced to the terminal on the next
call to
wrefresh().
The
touchoverlap()
function marks the portion of win2 that overlaps
win1 as being modified.
The
touchwin()
function marks the entire window win as having been
modified. Conversely, the
untouchwin()
function marks the window win as being unmodified, so
that any changes made to that window will not be synced to the terminal
during a wrefresh().
The
wtouchln()
function performs one of two operations on n lines
starting at line in the given window. If
changed is 1 then the given line range is marked as
being modified, if changed is 0 then the given line
range is set to being unmodified.
The
is_linetouched()
function returns TRUE if line
in window win has been modified since the last refresh
was done, otherwise FALSE is returned.
is_wintouched()
returns TRUE if the window win
has been modified since the last refresh, otherwise
FALSE is returned.
The
redrawwin()
function marks the entire window win as having been
corrupted. Is is equivalent to the touchwin()
function.
The
wredrawln()
function marks n lines starting at
line in the given window as corrupted. It is
equivalent to wtouchln(win,
line, n,
1).
The
syncok()
function determines whether all the ancestors of the specified window are
implicitly touched whenever there is a change in the window. The initial
state is FALSE.
The
wsyncup()
function touches all ancestors of win.
The
wsyncdown()
function touches win if any of its ancestors is
touched.
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
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.