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- * @Id: curs_scroll.3x,v 1.9 2001/10/14 00:51:56 tom Exp @
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-<HTML>
-<HEAD>
-<TITLE>curs_scroll 3x</TITLE>
-<link rev=made href="mailto:bug-ncurses@gnu.org">
-<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">
-</HEAD>
-<BODY>
-<H1>curs_scroll 3x</H1>
-<HR>
-<PRE>
-<!-- Manpage converted by man2html 3.0.1 -->
-
-</PRE>
-<H2>NAME</H2><PRE>
- <STRONG>scroll</STRONG>, <STRONG>scrl</STRONG>, <STRONG>wscrl</STRONG> - scroll a <STRONG>curses</STRONG> window
-
-
-</PRE>
-<H2>SYNOPSIS</H2><PRE>
- <STRONG>#include</STRONG> <STRONG>&lt;curses.h&gt;</STRONG>
-
- <STRONG>int</STRONG> <STRONG>scroll(WINDOW</STRONG> <STRONG>*win);</STRONG>
- <STRONG>int</STRONG> <STRONG>scrl(int</STRONG> <STRONG>n);</STRONG>
- <STRONG>int</STRONG> <STRONG>wscrl(WINDOW</STRONG> <STRONG>*win,</STRONG> <STRONG>int</STRONG> <STRONG>n);</STRONG>
-
-
-</PRE>
-<H2>DESCRIPTION</H2><PRE>
- The <STRONG>scroll</STRONG> routine scrolls the window up one line. This
- involves moving the lines in the window data structure.
- As an optimization, if the scrolling region of the window
- is the entire screen, the physical screen may be scrolled
- at the same time.
-
- For positive <EM>n</EM>, the <STRONG>scrl</STRONG> and <STRONG>wscrl</STRONG> routines scroll the
- window up <EM>n</EM> lines (line <EM>i</EM>+<EM>n</EM> becomes <EM>i</EM>); otherwise scroll
- the window down <EM>n</EM> lines. This involves moving the lines
- in the window character image structure. The current cur-
- sor position is not changed.
-
- For these functions to work, scrolling must be enabled via
- <STRONG>scrollok</STRONG>.
-
-
-</PRE>
-<H2>RETURN VALUE</H2><PRE>
- These routines return <STRONG>ERR</STRONG> upon failure, and <STRONG>OK</STRONG> (SVr4 only
- specifies "an integer value other than <STRONG>ERR</STRONG>") upon success-
- ful completion.
-
-
-</PRE>
-<H2>NOTES</H2><PRE>
- Note that <STRONG>scrl</STRONG> and <STRONG>scroll</STRONG> may be macros.
-
- The SVr4 documentation says that the optimization of phys-
- ically scrolling immediately if the scroll region is the
- entire screen "is" performed, not "may be" performed.
- This implementation deliberately does not guarantee that
- this will occur, to leave open the possibility of smarter
- optimization of multiple scroll actions on the next
- update.
-
- Neither the SVr4 nor the XSI documentation specify whether
- the current attribute or current color-pair of blanks gen-
- erated by the scroll function is zeroed. Under this
- implementation it is.
-
-
-</PRE>
-<H2>PORTABILITY</H2><PRE>
- The XSI Curses standard, Issue 4 describes these func-
- tions.
-
-
-</PRE>
-<H2>SEE ALSO</H2><PRE>
- <STRONG><A HREF="ncurses.3x.html">curses(3x)</A></STRONG>, <STRONG><A HREF="curs_outopts.3x.html">curs_outopts(3x)</A></STRONG>
-
-</PRE>
-<HR>
-<ADDRESS>
-Man(1) output converted with
-<a href="http://www.oac.uci.edu/indiv/ehood/man2html.html">man2html</a>
-</ADDRESS>
-</BODY>
-</HTML>