CURS_TOUCH(3X-SVR4) RISC/os Reference Manual  CURS_TOUCH(3X-SVR4)



NAME
     curs_touch: touchwin, touchline, untouchwin, wtouchln,
          is_linetouched, is_wintouched - curses refresh control
          routines

SYNOPSIS
     #include <curses.h>

     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);

DESCRIPTION
     The touchwin and touchline routines throw away all optimiza-
     tion information about which parts of the window have been
     touched, by pretending that the entire window has been drawn
     on.  This is sometimes necessary when using overlapping win-
     dows, 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.  The routine touch-
     line 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 wrefresh.

     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. In addition,
     is_linetouched returns ERR if line is not valid for the
     given window.

RETURN VALUE
     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 descrip-
     tions.

NOTES
     The header file <curses.h> automatically includes the header
     files <stdio.h> and <unctrl.h>.

     Note that all routines except wtouchln may be macros.





                        Printed 11/19/92                   Page 1

CURS_TOUCH(3X-SVR4) RISC/os Reference Manual  CURS_TOUCH(3X-SVR4)



SEE ALSO
     curses(3X), curs_refresh(3X).





















































 Page 2                 Printed 11/19/92