<BODY>
<H1 class="no-header">curs_touch 3x</H1>
<PRE>
-<STRONG><A HREF="curs_touch.3x.html">curs_touch(3x)</A></STRONG> <STRONG><A HREF="curs_touch.3x.html">curs_touch(3x)</A></STRONG>
+<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><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 <STRONG>touchline</STRONG> only pretends that <EM>count</EM> lines have
- been changed, beginning with line <EM>start</EM>.
-
- The <STRONG>untouchwin</STRONG> routine marks all lines in the window as
- unchanged since the last call to <STRONG>wrefresh</STRONG>.
-
- 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 <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.
+ The <STRONG>touchwin</STRONG> and <STRONG>touchline</STRONG> 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. 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 <STRONG>touchline</STRONG> only
+ pretends that <EM>count</EM> lines have been changed, beginning with line <EM>start</EM>.
+
+ The <STRONG>untouchwin</STRONG> routine marks all lines in the window as unchanged since
+ the last call to <STRONG>wrefresh</STRONG>.
+
+ 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 <STRONG>is_linetouched</STRONG> and <STRONG>is_wintouched</STRONG> routines return <STRONG>TRUE</STRONG> if the speci-
+ fied line/window was modified since the last call to <STRONG>wrefresh</STRONG>; other-
+ wise they return <STRONG>FALSE</STRONG>. In addition, <STRONG>is_linetouched</STRONG> returns <STRONG>ERR</STRONG> if
+ <EM>line</EM> is not valid for the given window.
</PRE><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.
+ 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 descriptions.
- X/Open does not define any error conditions. In this im-
- plementation
+ X/Open does not define any error conditions. In this implementation
<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 <STRONG>TRUE</STRONG>
- and <STRONG>FALSE</STRONG>, which are the normal return values
- of this function.
+ returns an error if the window pointer is null, or if the
+ line number is outside the window. Note that ERR is dis-
+ tinct from <STRONG>TRUE</STRONG> and <STRONG>FALSE</STRONG>, which are the normal return val-
+ ues of this function.
<STRONG>wtouchln</STRONG>
- returns an error if the window pointer is
- null, or if the line number is outside the
- window.
+ returns an error if the window pointer is null, or if the
+ line number is outside the window.
</PRE><H2><a name="h2-PORTABILITY">PORTABILITY</a></H2><PRE>
- The XSI Curses standard, Issue 4 describes these func-
- tions.
+ The XSI Curses standard, Issue 4 describes these functions.
- Some historic curses implementations had, as an undocu-
- mented feature, the ability to do the equivalent of
- <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.
+ Some historic curses implementations had, as an undocumented feature,
+ the ability to do the equivalent of <STRONG>clearok(...,</STRONG> <STRONG>1)</STRONG> by saying <STRONG>touch-</STRONG>
+ <STRONG>win(stdscr)</STRONG> or <STRONG>clear(stdscr)</STRONG>. This will not work under ncurses.
</PRE><H2><a name="h2-NOTES">NOTES</a></H2><PRE>
- <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>
<div class="nav">
<ul>
projects / ncurses.git / blobdiff