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<html><head><title>Win32::Pipe (Perl in a Nutshell, 2nd Edition)</title><link rel="stylesheet" type="text/css" href="../style/style1.css" /><meta name="DC.Creator" content="Stephen Spainhour" /><meta name="DC.Format" content="text/xml" scheme="MIME" /><meta name="DC.Language" content="en-US" /><meta name="DC.Publisher" content="O'Reilly & Associates, Inc." /><meta name="DC.Source" scheme="ISBN" content="0596002416L" /><meta name="DC.Subject.Keyword" content="stuff" /><meta name="DC.Title" content="Perl in a Nutshell, 2nd Edition" /><meta name="DC.Type" content="Text.Monograph" /></head><body bgcolor="#ffffff"><img src="gifs/smbanner.gif" usemap="#banner-map" border="0" alt="Book Home" /><map name="banner-map"><area shape="rect" coords="1,-2,616,66" href="index.htm" alt="Java and XSLT" /><area shape="rect" coords="629,-11,726,25" href="jobjects/fsearch.htm" alt="Search this book" /></map><div class="navbar"><table width="684" border="0"><tr><td align="left" valign="top" width="228"><a href="ch22_12.htm"><img src="../gifs/txtpreva.gif" alt="Previous" border="0" /></a></td><td align="center" valign="top" width="228" /><td align="right" valign="top" width="228"><a href="ch22_14.htm"><img src="../gifs/txtnexta.gif" alt="Next" border="0" /></a></td></tr></table></div><h2 class="sect1">22.13. Win32::Pipe</h2><p><a name="INDEX-3328" /><a name="INDEX-3329" /><a name="INDEX-3330" />This module gives Win32 Perl theability to use named pipes. Under Windows NT, named pipes are usedfor processes to communicate with one another, and are not limited tothe local machine.</p><p>Named pipes are created with <tt class="literal">new</tt>, which makes anew Win32::Pipe object and returns true on success.<tt class="literal">new</tt> has the following syntax:</p><blockquote><pre class="code">my $named_pipe = Win32::Pipe->new($pipe_name);</pre></blockquote><a name="perlnut2-CHP-22-SECT-13.1" /><div class="sect2"><h3 class="sect2">22.13.1. Win32::Pipe Methods</h3><p>The following methods are provided for objects of created byWin32::Pipe.</p><a name="INDEX-3331" /><div class="refentry"><table width="515" border="0" cellpadding="5"><tr><td align="left"><font size="+1"><b>BufferSize</b></font></td><td align="right"><i></i></td></tr></table><hr width="515" size="3" noshade="true" align="left" color="black" /><pre>$<em class="replaceable">named_pipe</em>->BufferSize( )</pre><p><a name="INDEX-3331" />Returns the size of the instanceof the buffer of the named pipe.</p></div><a name="INDEX-3332" /><div class="refentry"><table width="515" border="0" cellpadding="5"><tr><td align="left"><font size="+1"><b>Close</b></font></td><td align="right"><i></i></td></tr></table><hr width="515" size="3" noshade="true" align="left" color="black" /><pre>$<em class="replaceable">named_pipe</em>->Close</pre><p><a name="INDEX-3332" />Closes the named pipe.</p></div><a name="INDEX-3333" /><div class="refentry"><table width="515" border="0" cellpadding="5"><tr><td align="left"><font size="+1"><b>Connect</b></font></td><td align="right"><i></i></td></tr></table><hr width="515" size="3" noshade="true" align="left" color="black" /><pre>$<em class="replaceable">named_pipe</em>->Connect</pre><p><a name="INDEX-3333" />Tells the named pipe to createan instance of the named pipe and wait until a client connects.Returns true on success, false on failure.</p></div><a name="INDEX-3334" /><div class="refentry"><table width="515" border="0" cellpadding="5"><tr><td align="left"><font size="+1"><b>Disconnect</b></font></td><td align="right"><i></i></td></tr></table><hr width="515" size="3" noshade="true" align="left" color="black" /><pre>$<em class="replaceable">named_pipe</em>->Disconnect</pre><p><a name="INDEX-3334" />Disconnects(and destroys) the instance of the named pipe from the client.Returns true on success, false on failure.</p></div><a name="INDEX-3335" /><div class="refentry"><table width="515" border="0" cellpadding="5"><tr><td align="left"><font size="+1"><b>Error</b></font></td><td align="right"><i></i></td></tr></table><hr width="515" size="3" noshade="true" align="left" color="black" /><pre>$<em class="replaceable">named_pipe</em>->Error</pre><p><a name="INDEX-3335" />Returnsthe last error messages pertaining to the named pipe, if used incontext to the package. Returns a list containing ERROR_NUMBER andERROR_TEXT.</p></div><a name="INDEX-3336" /><div class="refentry"><table width="515" border="0" cellpadding="5"><tr><td align="left"><font size="+1"><b>Read</b></font></td><td align="right"><i></i></td></tr></table><hr width="515" size="3" noshade="true" align="left" color="black" /><pre>$<em class="replaceable">named_pipe</em>->Read</pre><p><a name="INDEX-3336" />Reads from the named pipe.Returns data read from the pipe on success, <tt class="literal">undef</tt>on failure.</p></div><a name="INDEX-3337" /><div class="refentry"><table width="515" border="0" cellpadding="5"><tr><td align="left"><font size="+1"><b>ResizeBuffer</b></font></td><td align="right"><i></i></td></tr></table><hr width="515" size="3" noshade="true" align="left" color="black" /><pre>$<em class="replaceable">named_pipe</em>->ResizeBuffer(<em class="replaceable">SIZE</em>)</pre><p><a name="INDEX-3337" />Setsthe size of the buffer of the instance of the named pipe to<em class="replaceable"><tt>SIZE</tt></em>. Returns the size of the buffer onsuccess, false on failure.</p></div><a name="INDEX-3338" /><a name="INDEX-3339" /><div class="refentry"><table width="515" border="0" cellpadding="5"><tr><td align="left"><font size="+1"><b>Write</b></font></td><td align="right"><i></i></td></tr></table><hr width="515" size="3" noshade="true" align="left" color="black" /><pre>$<em class="replaceable">named_pipe</em>->Write(<em class="replaceable">DATA</em>)</pre><p><a name="INDEX-3338" />Writes<em class="replaceable"><tt>DATA</tt></em> to the named pipe. Returns true onsuccess, false on failure.<a name="INDEX-3339" /> </p></div></div><hr width="684" align="left" /><div class="navbar"><table width="684" border="0"><tr><td align="left" valign="top" width="228"><a href="ch22_12.htm"><img src="../gifs/txtpreva.gif" alt="Previous" border="0" /></a></td><td align="center" valign="top" width="228"><a href="index.htm"><img src="../gifs/txthome.gif" alt="Home" border="0" /></a></td><td align="right" valign="top" width="228"><a href="ch22_14.htm"><img src="../gifs/txtnexta.gif" alt="Next" border="0" /></a></td></tr><tr><td align="left" valign="top" width="228">22.12. Win32::PerfLib</td><td align="center" valign="top" width="228"><a href="index/index.htm"><img src="../gifs/index.gif" alt="Book Index" border="0" /></a></td><td align="right" valign="top" width="228">22.14. Win32::Process</td></tr></table></div><hr width="684" align="left" /><img src="../gifs/navbar.gif" usemap="#library-map" border="0" alt="Library Navigation Links" /><p><p><font size="-1"><a href="copyrght.htm">Copyright © 2002</a> O'Reilly & Associates. All rights reserved.</font></p><map name="library-map"><area shape="rect" coords="1,0,85,94" href="../index.htm"><area shape="rect" coords="86,1,178,103" href="../lwp/index.htm"><area shape="rect" coords="180,0,265,103" href="../lperl/index.htm"><area shape="rect" coords="267,0,353,105" href="../perlnut/index.htm"><area shape="rect" coords="354,1,446,115" href="../prog/index.htm"><area shape="rect" coords="448,0,526,132" href="../tk/index.htm"><area shape="rect" coords="528,1,615,119" href="../cookbook/index.htm"><area shape="rect" coords="617,0,690,135" href="../pxml/index.htm"></map></body></html>⌨️ 快捷键说明
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