CURSES_TOUCH(3) BSD Library Functions Manual CURSES_TOUCH(3)
curses_touch, touchline, touchoverlap, touchwin, untouchwin, wtouchln, is_linetouched,
is_wintouched, redrawwin, wredrawln, wsyncup, wsyncdown -- curses window modification rou-
Curses Library (libcurses, -lcurses)
touchline(WINDOW *win, int start, int count);
touchoverlap(WINDOW *win1, WINDOW *win2);
wtouchln(WINDOW *win, int line, int n, boolf changed);
is_linetouched(WINDOW *win, int line);
wredrawln(WINDOW *win, int line, int n);
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 equiv-
alent 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 wsyncup() function touches all ancestors of win.
The wsyncdown() function touches win if any of its ancestors is touched.
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.
The NetBSD Curses library complies with the X/Open Curses specification, part of the Single
The Curses package appeared in 4.0BSD.
BSD February 23, 2010 BSD