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-<HTML>
-<HEAD>
-<TITLE>curs_overlay 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_overlay 3x</H1>
-<HR>
-<PRE>
-<!-- Manpage converted by man2html 3.0.1 -->
-
-</PRE>
-<H2>NAME</H2><PRE>
- <STRONG>overlay</STRONG>, <STRONG>overwrite</STRONG>, <STRONG>copywin</STRONG> - overlay and manipulate over-
- lapped <STRONG>curses</STRONG> windows
-
-
-</PRE>
-<H2>SYNOPSIS</H2><PRE>
- <STRONG>#include</STRONG> <STRONG>&lt;curses.h&gt;</STRONG>
-
- <STRONG>int</STRONG> <STRONG>overlay(const</STRONG> <STRONG>WINDOW</STRONG> <STRONG>*srcwin,</STRONG> <STRONG>WINDOW</STRONG> <STRONG>*dstwin);</STRONG>
- <STRONG>int</STRONG> <STRONG>overwrite(const</STRONG> <STRONG>WINDOW</STRONG> <STRONG>*srcwin,</STRONG> <STRONG>WINDOW</STRONG> <STRONG>*dstwin);</STRONG>
- <STRONG>int</STRONG> <STRONG>copywin(const</STRONG> <STRONG>WINDOW</STRONG> <STRONG>*srcwin,</STRONG> <STRONG>WINDOW</STRONG> <STRONG>*dstwin,</STRONG> <STRONG>int</STRONG>
- <STRONG>sminrow,</STRONG>
- <STRONG>int</STRONG> <STRONG>smincol,</STRONG> <STRONG>int</STRONG> <STRONG>dminrow,</STRONG> <STRONG>int</STRONG> <STRONG>dmincol,</STRONG> <STRONG>int</STRONG> <STRONG>dmaxrow,</STRONG>
- <STRONG>int</STRONG> <STRONG>dmaxcol,</STRONG> <STRONG>int</STRONG> <STRONG>overlay);</STRONG>
-
-
-</PRE>
-<H2>DESCRIPTION</H2><PRE>
- The <STRONG>overlay</STRONG> and <STRONG>overwrite</STRONG> routines overlay <EM>srcwin</EM> on top
- of <EM>dstwin</EM>. <EM>scrwin</EM> and <EM>dstwin</EM> are not required to be the
- same size; only text where the two windows overlap is
- copied. The difference is that <STRONG>overlay</STRONG> is non-destructive
- (blanks are not copied) whereas <STRONG>overwrite</STRONG> is destructive.
-
- The <STRONG>copywin</STRONG> routine provides a finer granularity of con-
- trol over the <STRONG>overlay</STRONG> and <STRONG>overwrite</STRONG> routines. Like in the
- <STRONG>prefresh</STRONG> routine, a rectangle is specified in the destina-
- tion window, (<EM>dminrow</EM>, <EM>dmincol</EM>) and (<EM>dmaxrow</EM>, <EM>dmaxcol</EM>),
- and the upper-left-corner coordinates of the source win-
- dow, (<EM>sminrow</EM>, <EM>smincol</EM>). If the argument <EM>overlay</EM> is <STRONG>true</STRONG>,
- then copying is non-destructive, as in <STRONG>overlay</STRONG>.
-
-
-</PRE>
-<H2>RETURN VALUE</H2><PRE>
- Routines that return an integer return <STRONG>ERR</STRONG> upon failure,
- and <STRONG>OK</STRONG> (SVr4 only specifies "an integer value other than
- <STRONG>ERR</STRONG>") upon successful completion.
-
-
-</PRE>
-<H2>NOTES</H2><PRE>
- Note that <STRONG>overlay</STRONG> and <STRONG>overwrite</STRONG> may be macros.
-
-
-</PRE>
-<H2>PORTABILITY</H2><PRE>
- The XSI Curses standard, Issue 4 describes these functions
- (adding the const qualifiers). It further specifies their
- behavior in the presence of characters with multibyte ren-
- ditions (not yet supported in this implementation).
-
-
-</PRE>
-<H2>SEE ALSO</H2><PRE>
- <STRONG><A HREF="ncurses.3x.html">curses(3x)</A></STRONG>, <STRONG><A HREF="curs_pad.3x.html">curs_pad(3x)</A></STRONG>, <STRONG><A HREF="curs_refresh.3x.html">curs_refresh(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>