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-<H2>NAME</H2><PRE>
- <B>touchwin</B>, <B>touchline</B>, <B>untouchwin</B>, <B>wtouchln</B>, <B>is_linetouched</B>,
- <B>is_wintouched</B> - <B>curses</B> refresh control routines
-
-
-</PRE>
-<H2>SYNOPSIS</H2><PRE>
- <B>#include</B> <B>&lt;curses.h&gt;</B>
- <B>int</B> <B>touchwin(WINDOW</B> <B>*win);</B>
- <B>int</B> <B>touchline(WINDOW</B> <B>*win,</B> <B>int</B> <B>start,</B> <B>int</B> <B>count);</B>
- <B>int</B> <B>untouchwin(WINDOW</B> <B>*win);</B>
- <B>int</B> <B>wtouchln(WINDOW</B> <B>*win,</B> <B>int</B> <B>y,</B> <B>int</B> <B>n,</B> <B>int</B> <B>changed);</B>
- <B>bool</B> <B>is_linetouched(WINDOW</B> <B>*win,</B> <B>int</B> <B>line);</B>
- <B>bool</B> <B>is_wintouched(WINDOW</B> <B>*win);</B>
-
-
-</PRE>
-<H2>DESCRIPTION</H2><PRE>
- The <B>touchwin</B> and <B>touchline</B> routines throw away all opti-
- mization 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 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.
- The routine <B>touchline</B> only pretends that <I>count</I> lines have
- been changed, beginning with line <I>start</I>.
-
- The <B>untouchwin</B> routine marks all lines in the window as
- unchanged since the last call to <B>wrefresh</B>.
-
- The <B>wtouchln</B> routine makes <I>n</I> lines in the window, starting
- at line <I>y</I>, look as if they have (<I>changed</I><B>=1</B>) or have not
- (<I>changed</I><B>=0</B>) been changed since the last call to <B>wrefresh</B>.
-
- The <B>is_linetouched</B> and <B>is_wintouched</B> routines return <B>TRUE</B>
- if the specified line/window was modified since the last
- call to <B>wrefresh</B>; otherwise they return <B>FALSE</B>. In addi-
- tion, <B>is_linetouched</B> returns <B>ERR</B> if <I>line</I> is not valid for
- the given window.
-
-
-</PRE>
-<H2>RETURN VALUE</H2><PRE>
- All routines return the integer <B>ERR</B> upon failure and an
- integer value other than <B>ERR</B> upon successful completion,
- unless otherwise noted in the preceding routine descrip-
- tions.
-
-
-</PRE>
-<H2>PORTABILITY</H2><PRE>
- 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
- <B>clearok(...,</B> <B>1)</B> by saying <B>touchwin(stdscr)</B> or <B>clear(std-</B>
- <B>scr)</B>. This will not work under ncurses.
-
-
-</PRE>
-<H2>NOTES</H2><PRE>
- Note that all routines except <B>wtouchln</B> may be macros.
-
-
-</PRE>
-<H2>SEE ALSO</H2><PRE>
- <B><A HREF="ncurses.3x.html">curses(3x)</A></B>, <B><A HREF="curs_refresh.3x.html">curs_refresh(3x)</A></B>.
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