curs_touch: touchwin, touchline, untouchwin, wtouchln, is_linetouched, is_wintouched --
curses refresh control routines
cc [flag . . .] file -locurses [library . . .]
int touchwin(WINDOW win);
int touchline(WINDOW win, int start, int count);
int untouchwin(WINDOW win);
int wtouchln(WINDOW win, int y, int n, int changed);
int is_linetouched(WINDOW win, int line);
int is_wintouched(WINDOW win);
The touchwin and touchline routines
throw away all optimization information about which parts of the window have
by pretending that the entire window has been drawn on.
This is sometimes necessary when using overlapping windows,
since a change to
one window affects the other window,
but the records of which lines have been changed in
the other window do not reflect the change.
touchline only pretends that count
lines have been changed,
beginning with line start.
The untouchwin routine marks all lines in the
window as unchanged since the last call to
The wtouchln routine makes n
lines in the window,
starting at line y, look as if they have (changed=1)
or have not (changed=0)
been changed since the last call to wrefresh.
The is_linetouched and is_wintouched routines
return TRUE if the specified line/window was modified
since the last call to wrefresh;
otherwise they return FALSE.
is_linetouched returns ERR if line is not valid for
the given window.
All routines return the integer ERR upon
failure and an integer value other than ERR
upon successful completion,
unless otherwise noted in the preceding routine descriptions.
The header file ocurses.h automatically includes the header files
stdio.h and unctrl.h.
Note that all routines except wtouchln may be macros.
© 2004 The SCO Group, Inc. All rights reserved.
UnixWare 7 Release 7.1.4 - 25 April 2004