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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>unctrl</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_096"> </a>NAME</h4><blockquote>unctrl - generate printable representation of a character</blockquote><h4><a name = "tag_002_001_097"> </a>SYNOPSIS</h4><blockquote><pre><code>#include <<a href="unctrl.h.html">unctrl.h</a>>char *unctrl(chtype <i>c</i>);</code></pre></blockquote><h4><a name = "tag_002_001_098"> </a>DESCRIPTION</h4><blockquote>The<i>unctrl()</i>function generates a character string that is a printable representation of<i>c</i>. If <i>c</i> is a control character, it is converted to the^<i>X</i> notation. If <i>c</i> contains rendition information, the effectis undefined.</blockquote><h4><a name = "tag_002_001_099"> </a>RETURN VALUE</h4><blockquote>Upon successful completion,<i>unctrl()</i>returns the generated string.Otherwise, it returns a null pointer.</blockquote><h4><a name = "tag_002_001_100"> </a>ERRORS</h4><blockquote>No errors are defined.</blockquote><h4><a name = "tag_002_001_101"> </a>SEE ALSO</h4><blockquote><i><a href="keyname.html">keyname()</a></i>,<i><a href="wunctrl.html">wunctrl()</a></i>,<i><a href="unctrl.h.html"><unctrl.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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