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<!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML 2.0//EN"><!-- **************************************************************************** * Copyright (c) 1998-2002,2005 Free Software Foundation, Inc. * * * * Permission is hereby granted, free of charge, to any person obtaining a * * copy of this software and associated documentation files (the * * "Software"), to deal in the Software without restriction, including * * without limitation the rights to use, copy, modify, merge, publish, * * distribute, distribute with modifications, sublicense, and/or sell * * copies of the Software, and to permit persons to whom the Software is * * furnished to do so, subject to the following conditions: * * * * The above copyright notice and this permission notice shall be included * * in all copies or substantial portions of the Software. * * * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS * * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF * * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. * * IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, * * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR * * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR * * THE USE OR OTHER DEALINGS IN THE SOFTWARE. * * * * Except as contained in this notice, the name(s) of the above copyright * * holders shall not be used in advertising or otherwise to promote the * * sale, use or other dealings in this Software without prior written * * authorization. * **************************************************************************** * @Id: curs_overlay.3x,v 1.13 2005/05/15 16:18:38 tom Exp @--><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 --><STRONG><A HREF="curs_overlay.3x.html">curs_overlay(3x)</A></STRONG> <STRONG><A HREF="curs_overlay.3x.html">curs_overlay(3x)</A></STRONG></PRE><H2>NAME</H2><PRE> <STRONG>overlay</STRONG>, <STRONG>overwrite</STRONG>, <STRONG>copywin</STRONG> - overlay and manipulate overlapped <STRONG>curses</STRONG> windows</PRE><H2>SYNOPSIS</H2><PRE> <STRONG>#include</STRONG> <STRONG><curses.h></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. X/Open defines no error conditions. In this implementa- tion, <STRONG>copywin</STRONG>, <STRONG>overlay</STRONG> and <STRONG>overwrite</STRONG> return an error if either of the window pointers are null, or if some part of the window would be placed off-screen.</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> <STRONG><A HREF="curs_overlay.3x.html">curs_overlay(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>⌨️ 快捷键说明
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