typeahead.html

来自「unix 下的C开发手册,还用详细的例程。」· HTML 代码 · 共 70 行

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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>typeahead</title></head><body bgcolor=white><center><font size=2>The Single UNIX &reg; Specification, Version 2<br>Copyright &copy; 1997 The Open Group</font></center><hr size=2 noshade><h4><a name = "tag_002_001_087">&nbsp;</a>NAME</h4><blockquote>typeahead - control checking for typeahead</blockquote><h4><a name = "tag_002_001_088">&nbsp;</a>SYNOPSIS</h4><blockquote><pre><code>#include &lt;<a href="curses.h.html">curses.h</a>&gt;int typeahead(int <i>fildes</i>);</code></pre></blockquote><h4><a name = "tag_002_001_089">&nbsp;</a>DESCRIPTION</h4><blockquote>The<i>typeahead()</i>function controls the detection of typeahead during a refresh, based on thevalue of <i>fildes</i>:<ul><p><li>If <i>fildes</i> is a valid file descriptor, typeahead is enabled duringrefresh; Cursesperiodically checks <i>fildes</i> for input and aborts the refresh if anycharacter is available.  (This is the initial setting, and the typeahead filedescriptor corresponds to the input file associated with the screen created by<i><a href="initscr.html">initscr()</a></i>or<i><a href="newterm.html">newterm()</a></i>.)The value of <i>fildes</i> need not be the file descriptor on which the refreshis occurring.<p><li>If <i>fildes</i> is -1, Curses does not check for typeahead during refresh.<p></ul></blockquote><h4><a name = "tag_002_001_090">&nbsp;</a>RETURN VALUE</h4><blockquote>Upon successful completion,<i>typeahead()</i>returns OK.  Otherwise, it returns ERR.</blockquote><h4><a name = "tag_002_001_091">&nbsp;</a>ERRORS</h4><blockquote>No errors are defined.</blockquote><h4><a name = "tag_002_001_092">&nbsp;</a>SEE ALSO</h4><blockquote><xref href=terminalinput><a href="intov.html#tag_001_005">Input Processing</a></xref>,<i><a href="doupdate.html">doupdate()</a></i>,<i><a href="getch.html">getch()</a></i>,<i><a href="initscr.html">initscr()</a></i>,<i><a href="curses.h.html">&lt;curses.h&gt;</a></i>,<b>XBD</b> specification, <a href="../xbd/termios.html#tag_008_002"><b>Parameters that Can be Set</b>&nbsp;</a> .</blockquote><hr size=2 noshade><center><font size=2>UNIX &reg; is a registered Trademark of The Open Group.<br>Copyright &copy; 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>

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本页面展示了「unix 下的C开发手册,还用详细的例程。」中的 typeahead.html 源码文件，采用 HTML 编程语言编写，共 70 行代码。您可以在线阅读完整代码内容，也可以返回资源详情页下载完整源码包进行本地学习和开发。

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