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<html><!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2 Final//EN"><!--Converted with jLaTeX2HTML 2002 (1.62) JA patch-1.4patched version by: Kenshi Muto, Debian Project.LaTeX2HTML 2002 (1.62),original version by: Nikos Drakos, CBLU, University of Leeds* revised and updated by: Marcus Hennecke, Ross Moore, Herb Swan* with significant contributions from: Jens Lippmann, Marek Rouchal, Martin Wilck and others --><HTML><HEAD><TITLE>3.3 Class Tcl</TITLE><META NAME="description" CONTENT="3.3 Class Tcl"><META NAME="keywords" CONTENT="everything"><META NAME="resource-type" CONTENT="document"><META NAME="distribution" CONTENT="global"><META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=iso-8859-1"><META NAME="Generator" CONTENT="jLaTeX2HTML v2002 JA patch-1.4"><META HTTP-EQUIV="Content-Style-Type" CONTENT="text/css"><LINK REL="STYLESHEET" HREF="everything.css" tppabs="http://www.isi.edu/nsnam/ns/doc/everything.css"><LINK REL="next" HREF="node15.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node15.html"><LINK REL="previous" HREF="node7.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node7.html"><LINK REL="up" HREF="node5.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node5.html"><LINK REL="next" HREF="node9.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node9.html"></HEAD><BODY ><!--Navigation Panel--><A NAME="tex2html1262" HREF="node9.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node9.html"><IMG WIDTH="37" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="next" SRC="file:/usr/share/latex2html/icons/next.png"></A> <A NAME="tex2html1256" HREF="node5.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node5.html"><IMG WIDTH="26" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="up" SRC="file:/usr/share/latex2html/icons/up.png"></A> <A NAME="tex2html1250" HREF="node7.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node7.html"><IMG WIDTH="63" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="previous" SRC="file:/usr/share/latex2html/icons/prev.png"></A> <A NAME="tex2html1258" HREF="node1.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node1.html"><IMG WIDTH="65" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="contents" SRC="file:/usr/share/latex2html/icons/contents.png"></A> <A NAME="tex2html1260" HREF="node590.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node590.html"><IMG WIDTH="43" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="index" SRC="file:/usr/share/latex2html/icons/index.png"></A> <BR><B> Next:</B> <A NAME="tex2html1263" HREF="node9.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node9.html">3.3.1 Obtain a Reference</A><B> Up:</B> <A NAME="tex2html1257" HREF="node5.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node5.html">3. OTcl Linkage</A><B> Previous:</B> <A NAME="tex2html1251" HREF="node7.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node7.html">3.2 Code Overview</A>   <B> <A NAME="tex2html1259" HREF="node1.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node1.html">Contents</A></B>   <B> <A NAME="tex2html1261" HREF="node590.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node590.html">Index</A></B> <BR><BR><!--End of Navigation Panel--><H1><A NAME="SECTION02130000000000000000"></A><A NAME="sec:Tcl"></A><BR>3.3 Class Tcl</H1><P>The Tcl../Tcl/Tcl.h encapsulates the actual instance ofthe OTcl interpreter, and provides the methodsto access and communicate with that interpreter.The methods described in this section are relevant to the programmer who is writing C++ code.The class provides methods for the following operations:<DL COMPACT><DT><DD>obtain a reference to the Tcl instance;<DT><DD>invoke OTcl procedures through the interpreter;<DT><DD>retrieve, or pass back results to the interpreter;<DT><DD>report error situations and exit in an uniform manner; and<DT><DD>store and lookup ``TclObjects''.<DT><DD>acquire direct access to the interpreter.</DD></DL>We describe each of the methods in the following subsections.<P><BR><HR><!--Table of Child-Links--><A NAME="CHILD_LINKS"><STRONG>Subsections</STRONG></A><UL><LI><A NAME="tex2html1264" HREF="node9.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node9.html">3.3.1 Obtain a Reference to the class Tcl instance</A><LI><A NAME="tex2html1265" HREF="node10.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node10.html">3.3.2 Invoking OTcl Procedures</A><LI><A NAME="tex2html1266" HREF="node11.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node11.html">3.3.3 Passing Results to/from the Interpreter</A><LI><A NAME="tex2html1267" HREF="node12.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node12.html">3.3.4 Error Reporting and Exit</A><LI><A NAME="tex2html1268" HREF="node13.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node13.html">3.3.5 Hash Functions within the Interpreter</A><LI><A NAME="tex2html1269" HREF="node14.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node14.html">3.3.6 Other Operations on the Interpreter</A></UL><!--End of Table of Child-Links--><BR><HR><ADDRESS>2003-09-23</ADDRESS></BODY></HTML>⌨️ 快捷键说明
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