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is_linetouched(3xcurses)
is_li...uched(3XCURSES) X/Open Curses Library Functionsis_li...uched(3XCURSES)
NAME
is_linetouched, is_wintouched, touchline, touchwin, untouchwin,
wtouchln - control window refresh
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>
bool is_linetouched(WINDOW *win, int line);
bool is_wintouched(WINDOW *win);
int touchline(WINDOW *win, int start, int count);
int touchwin(WINDOW *win);
int untouchwin(WINDOW *win);
int wtouchln(WINDOW *win, int y, int n, int changed);
PARAMETERS
win Is a pointer to the window in which the refresh is to be
controlled or monitored.
line Is the line to be checked for change since refresh.
start Is the starting line number of the portion of the window to
make appear changed.
count Is the number of lines in the window to mark as changed.
y Is the starting line number of the portion of the window to
make appear changed or not changed.
n Is the number of lines in the window to mark as changed.
changed Is a flag indicating whether to make lines look changed (0)
or not changed (1).
DESCRIPTION
The touchwin() function marks the entire window as dirty. This makes it
appear to X/Open Curses as if the whole window has been changed, thus
causing the entire window to be rewritten with the next call to re‐
fresh(3XCURSES). This is sometimes necessary when using overlapping
windows; the change to one window will not be reflected in the other
and, hence will not be recorded.
The touchline() function marks as dirty a portion of the window start‐
ing at line start and continuing for count lines instead of the entire
window. Consequently, that portion of the window is updated with the
next call to refresh().
The untouchwin() function marks all lines in the window as unchanged
since the last refresh, ensuring that it is not updated.
The wtouchln() function marks n lines starting at line y as either
changed (changed=1) or unchanged (changed=0) since the last refresh.
To find out which lines or windows have been changed since the last re‐
fresh, use the is_linetouched() and is_wintouched() functions, respec‐
tively. These return TRUE if the specified line or window have been
changed since the last call to refresh() or FALSE if no changes have
been made.
RETURN VALUES
On success, these functions return OK. Otherwise, they return ERR.
ERRORS
None.
ATTRIBUTES
See attributes(7) for descriptions of the following attributes:
tab() box; cw(2.75i) |cw(2.75i) lw(2.75i) |lw(2.75i) ATTRIBUTE TYPEAT‐
TRIBUTE VALUE _ Interface StabilityCommitted _ MT-LevelUnsafe _ Stan‐
dardSee standards(7).
SEE ALSO
doupdate(3XCURSES), libcurses(3XCURSES), attributes(7), standards(7)
Oracle Solaris 11.4 5 Jun 2002 is_li...uched(3XCURSES)