The touchwin and touchline routines throw away all opti-
mization information about which parts of the window have
been touched, by pretending that the entire window has
@@ -79,66 +79,72 @@
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.
+ (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 addi-
- tion, is_linetouched returns ERR if line is not valid for
+ 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 addi-
+ tion, 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-
+
+ 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.
- X/Open does not define any error conditions. In this im-
+ X/Open does not define any error conditions. In this im-
plementation
is_linetouched
- returns an error if the window pointer is
- null, or if the line number is outside the
- window. Note that ERR is distinct from TRUE
- and FALSE, which are the normal return values
+ returns an error if the window pointer is
+ null, or if the line number is outside the
+ window. Note that ERR is distinct from TRUE
+ and FALSE, which are the normal return values
of this function.
wtouchln
- returns an error if the window pointer is
- null, or if the line number is outside the
+ returns an error if the window pointer is
+ null, or if the line number is outside the
window.
-
PORTABILITY
- The XSI Curses standard, Issue 4 describes these func-
+
+ The XSI Curses standard, Issue 4 describes these func-
tions.
- Some historic curses implementations had, as an undocu-
- mented feature, the ability to do the equivalent of
- clearok(...,1) by saying touchwin(stdscr) or clear(std-
+ Some historic curses implementations had, as an undocu-
+ mented feature, the ability to do the equivalent of
+ clearok(...,1) by saying touchwin(stdscr) or clear(std-scr). This will not work under ncurses.