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<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"><html><head> <meta content="text/html; charset=ISO-8859-1" http-equiv="content-type"> <title>C++/Tcl</title></head><body><table style="width: 100%; text-align: left;" border="0" cellpadding="2" cellspacing="20"> <tbody> <tr> <td style="vertical-align: top;"><font size="+3"><span style="font-family: helvetica,arial,sans-serif; font-weight: bold; color: rgb(0, 0, 255);">C++/Tcl</span></font><br> <span style="font-family: helvetica,arial,sans-serif; color: rgb(0, 0, 255); font-weight: bold;">AC++ library for interoperability between C++ and Tcl</span> </td> <td style="vertical-align: top; text-align: right;"><br> </td> </tr> </tbody></table><br>[<a href="index.html">top</a>][<a href="freefun.html">next</a>]<br><h4>Quick Start</h4>The C++/Tcl library allows to easily integrate these two languages.<br>It is easy to both extend the Tcl interpreter and to embed the Tclinterpreter in a regular C++ code.<br><br><h4><a name="extending"></a>Hello World (extending Tcl)<br></h4>Let's take the following C++ file:<br><br><div style="margin-left: 40px;"><code>// example1.cc<br><br></code><code>#include "cpptcl.h"</code><br><code>#include <iostream></code><br><code></code><br><code>using namespace std;</code><br><code></code><br><code>void hello()</code><br><code>{</code><br><code> cout << "Hello C++/Tcl!" <<endl;</code><br><code>}</code><br><code></code><br><code>CPPTCL_MODULE(Mymodule, i)</code><br><code>{</code><br><code> i.def("hello", hello);</code><br><code>}</code><br><code></code></div><br>After compiling (let's suppose that the resulting shared library isnamed <code>mymodule.so</code>), we can do this:<br><br><div style="margin-left: 40px;"><code>$ tclsh</code><br><code>% load ./mymodule.so</code><br><code>% hello</code><br><code>Hello C++/Tcl!</code><br><code>% for {set i 0} {$i != 4} {incr i} { hello }<br>Hello C++/Tcl!<br>Hello C++/Tcl!<br>Hello C++/Tcl!<br>Hello C++/Tcl!<br>% </code><br><code></code></div><br>In other words, the Tcl interpreter was <span style="font-style: italic;">extended</span> with the loadable module(which is a shared library) that provides the definition of new command.<br><br><h4><a name="embedding"></a>Hello World (embedding Tcl)<br></h4>Let's take the following C++ program:<br><br><div style="margin-left: 40px;"><code>// example2.cc<br><br>#include "cpptcl.h"<br>#include <iostream><br>#include <string><br><br>using namespace std;<br>using namespace Tcl;<br><br>void hello()<br>{<br> cout << "Hello C++/Tcl!" << endl;<br>}<br><br>int main()<br>{<br> interpreter i;<br> i.def("hello", hello);<br><br> string script = "for {set i 0} {$i != 4} {incri} { hello }";<br><br> i.eval(script);<br>}<br></code></div><br>After compiling, it gives the following result:<br><br><div style="margin-left: 40px;"><code>$ ./example2<br>Hello C++/Tcl!<br>Hello C++/Tcl!<br>Hello C++/Tcl!<br>Hello C++/Tcl!<br>$ <br></code></div><br>In other words, the Tcl interpreter exists in a C++ application as aregular object.<br>It is possible to define new commands in this interpreter and executearbitrary Tcl scripts in it, so that C++ and Tcl communicate with eachother.<br><br><br>[<a href="index.html">top</a>][<a href="freefun.html">next</a>]<br><br><hr style="width: 100%; height: 2px;">Copyright © 2004-2006,MaciejSobczak<br><br></body></html>⌨️ 快捷键说明
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