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curs_touch(3) Library Functions Manual curs_touch(3) NAME curs_touch, is_linetouched, is_wintouched, touchline, touchwin, un- touchwin, wtouchln - Curses routines that control refresh LIBRARY Curses Library (libcurses.a, libcurses.so) SYNOPSIS #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); STANDARDS Interfaces documented on this reference page conform to industry stan- dards as follows: touchwin: XPG4, XPG4-UNIX is_linetouched, is_wintouched, touchline, untouchwin, wtouchln: XPG4-UNIX Refer to the standards(5) reference page for more information about in- dustry standards and associated tags. DESCRIPTION The touchwin and touchline routines throw away all optimization infor- mation about which parts of the window have been touched, by pretending that the entire window has been drawn on. It is sometimes necessary to call these routines when using overlapping windows. In this case, a change to one window affects the other window, but the other window's records of which lines have been changed do not reflect the change in the first window. The touchline routine 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 (if changed=1) or have not changed (changed=0) since the last call to wrefresh. The is_linetouched or is_wintouched routines return TRUE if the speci- fied line or window was modified since the last call to wrefresh; oth- erwise they return FALSE. In addition, is_linetouched returns ERR if line is not valid for the given window. NOTES The header file curses.h automatically includes the header file stdio.h. Note that touchline may be a macro. RETURN VALUES 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. RELATED INFORMATION Functions: curses(3), curs_refresh(3) Others: standards(5) delim off curs_touch(3)