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+<H1>curs_touch 3x</H1>
+<HR>
<PRE>
-<!-- Manpage converted by man2html 3.0.1 -->
+<STRONG><A HREF="curs_touch.3x.html">curs_touch(3x)</A></STRONG> <STRONG><A HREF="curs_touch.3x.html">curs_touch(3x)</A></STRONG>
+
+
+
</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
+<H2>
<a name="h2-NAME">NAME</a></H2><PRE>
+ <STRONG>touchwin</STRONG>, <STRONG>touchline</STRONG>, <STRONG>untouchwin</STRONG>, <STRONG>wtouchln</STRONG>, <STRONG>is_linetouched</STRONG>,
+ <STRONG>is_wintouched</STRONG> - <STRONG>curses</STRONG> refresh control routines
</PRE>
- <B>#include</B> <B><curses.h></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>
+<H2>
<a name="h2-SYNOPSIS">SYNOPSIS</a></H2><PRE>
+ <STRONG>#include</STRONG> <STRONG><curses.h></STRONG>
+ <STRONG>int</STRONG> <STRONG>touchwin(WINDOW</STRONG> <STRONG>*win);</STRONG>
+ <STRONG>int</STRONG> <STRONG>touchline(WINDOW</STRONG> <STRONG>*win,</STRONG> <STRONG>int</STRONG> <STRONG>start,</STRONG> <STRONG>int</STRONG> <STRONG>count);</STRONG>
+ <STRONG>int</STRONG> <STRONG>untouchwin(WINDOW</STRONG> <STRONG>*win);</STRONG>
+ <STRONG>int</STRONG> <STRONG>wtouchln(WINDOW</STRONG> <STRONG>*win,</STRONG> <STRONG>int</STRONG> <STRONG>y,</STRONG> <STRONG>int</STRONG> <STRONG>n,</STRONG> <STRONG>int</STRONG> <STRONG>changed);</STRONG>
+ <STRONG>bool</STRONG> <STRONG>is_linetouched(WINDOW</STRONG> <STRONG>*win,</STRONG> <STRONG>int</STRONG> <STRONG>line);</STRONG>
+ <STRONG>bool</STRONG> <STRONG>is_wintouched(WINDOW</STRONG> <STRONG>*win);</STRONG>
</PRE>
-<H2>
DESCRIPTION</H2><PRE>
- The <B>touchwin</B> and <B>touchline</B> routines throw away all opti-
+<H2>
<a name="h2-DESCRIPTION">DESCRIPTION</a></H2><PRE>
+ The <STRONG>touchwin</STRONG> and <STRONG>touchline</STRONG> 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 routine <STRONG>touchline</STRONG> only pretends that <EM>count</EM> lines have
+ been changed, beginning with line <EM>start</EM>.
- The <B>untouchwin</B> routine marks all lines in the window as
- unchanged since the last call to <B>wrefresh</B>.
+ The <STRONG>untouchwin</STRONG> routine marks all lines in the window as
+ unchanged since the last call to <STRONG>wrefresh</STRONG>.
- 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 <STRONG>wtouchln</STRONG> routine makes <EM>n</EM> lines in the window, starting
+ at line <EM>y</EM>, look as if they have (<EM>changed</EM><STRONG>=1</STRONG>) or have not
+ (<EM>changed</EM><STRONG>=0</STRONG>) been changed since the last call to <STRONG>wrefresh</STRONG>.
- 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 <STRONG>is_linetouched</STRONG> and <STRONG>is_wintouched</STRONG> routines return <STRONG>TRUE</STRONG>
+ if the specified line/window was modified since the last
+ call to <STRONG>wrefresh</STRONG>; otherwise they return <STRONG>FALSE</STRONG>. In addi-
+ tion, <STRONG>is_linetouched</STRONG> returns <STRONG>ERR</STRONG> if <EM>line</EM> 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-
+<H2>
<a name="h2-RETURN-VALUE">RETURN VALUE</a></H2><PRE>
+ All routines return the integer <STRONG>ERR</STRONG> upon failure and an
+ integer value other than <STRONG>ERR</STRONG> upon successful completion,
+ unless otherwise noted in the preceding routine descrip-
tions.
+ X/Open does not define any error conditions. In this im-
+ plementation
+
+ <STRONG>is_linetouched</STRONG>
+ 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.
+
+ <STRONG>wtouchln</STRONG>
+ returns an error if the window pointer is
+ null, or if the line number is outside the
+ window.
+
</PRE>
-<H2>
PORTABILITY</H2><PRE>
+<H2>
<a name="h2-PORTABILITY">PORTABILITY</a></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.
+ <STRONG>clearok(...,</STRONG> <STRONG>1)</STRONG> by saying <STRONG>touchwin(stdscr)</STRONG> or <STRONG>clear(std-</STRONG>
+ <STRONG>scr)</STRONG>. This will not work under ncurses.
</PRE>
- Note that all routines except <B>wtouchln</B> may be macros.
+<H2>
<a name="h2-NOTES">NOTES</a></H2><PRE>
+ Note that all routines except <STRONG>wtouchln</STRONG> 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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+<H2><a name="h2-SEE-ALSO">SEE ALSO</a></H2><PRE>
+ <STRONG><A HREF="ncurses.3x.html">curses(3x)</A></STRONG>, <STRONG><A HREF="curs_refresh.3x.html">curs_refresh(3x)</A></STRONG>, <STRONG><A HREF="curs_variables.3x.html">curs_variables(3x)</A></STRONG>.
+ <STRONG><A HREF="curs_touch.3x.html">curs_touch(3x)</A></STRONG>
</PRE>
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+<div class="nav">
+<ul>
+<li><a href="#h2-NAME">NAME</a></li>
+<li><a href="#h2-SYNOPSIS">SYNOPSIS</a></li>
+<li><a href="#h2-DESCRIPTION">DESCRIPTION</a></li>
+<li><a href="#h2-RETURN-VALUE">RETURN VALUE</a></li>
+<li><a href="#h2-PORTABILITY">PORTABILITY</a></li>
+<li><a href="#h2-NOTES">NOTES</a></li>
+<li><a href="#h2-SEE-ALSO">SEE ALSO</a></li>
+</ul>
+</div>
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