📄 clear.html
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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2 Final//EN"><html><head><!-- Copyright 1997 The Open Group, All Rights Reserved --><title>clear</title></head><body bgcolor=white><center><font size=2>The Single UNIX ® Specification, Version 2<br>Copyright © 1997 The Open Group</font></center><hr size=2 noshade><h4><a name = "tag_002_001_386"> </a>NAME</h4><blockquote>clear, erase, wclear, werase - clear a window</blockquote><h4><a name = "tag_002_001_387"> </a>SYNOPSIS</h4><blockquote><pre><code>#include <<a href="curses.h.html">curses.h</a>>int clear(void);int erase(void);int wclear(WINDOW *<i>win</i>);int werase(WINDOW *<i>win</i>);</code></pre></blockquote><h4><a name = "tag_002_001_388"> </a>DESCRIPTION</h4><blockquote>The<i>clear()</i>,<i><a href="erase.html">erase()</a></i>,<i>wclear()</i>and<i>werase()</i>functions clear every position in the current or specified window.<p>The<i>clear()</i>and<i>wclear()</i>functions also achieve the same effect as calling<i><a href="clearok.html">clearok()</a></i>,so that the window is cleared completely on the next call to<i><a href="wrefresh.html">wrefresh()</a></i>for the window and is redrawn in its entirety.</blockquote><h4><a name = "tag_002_001_389"> </a>RETURN VALUE</h4><blockquote>Upon successful completion, these functions return OK.Otherwise, they return ERR.</blockquote><h4><a name = "tag_002_001_390"> </a>ERRORS</h4><blockquote>No errors are defined.</blockquote><h4><a name = "tag_002_001_391"> </a>SEE ALSO</h4><blockquote><i><a href="clearok.html">clearok()</a></i>,<i><a href="doupdate.html">doupdate()</a></i>,<i><a href="curses.h.html"><curses.h></a></i>.</blockquote><hr size=2 noshade><center><font size=2>UNIX ® is a registered Trademark of The Open Group.<br>Copyright © 1997 The Open Group<br> [ <a href="../index.html">Main Index</a> | <a href="../xshix.html">XSH</a> | <a href="../xcuix.html">XCU</a> | <a href="../xbdix.html">XBD</a> | <a href="../cursesix.html">XCURSES</a> | <a href="../xnsix.html">XNS</a> ]</font></center><hr size=2 noshade></body></html>⌨️ 快捷键说明
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