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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
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