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<!DOCTYPE HTML PUBLIC "-//W3O//DTD W3 HTML 2.0//EN"><!-- This collection of hypertext pages is Copyright 1995-2005 by Steve Summit. --><!-- Content from the book "C Programming FAQs: Frequently Asked Questions" --><!-- (Addison-Wesley, 1995, ISBN 0-201-84519-9) is made available here by --><!-- permission of the author and the publisher as a service to the community. --><!-- It is intended to complement the use of the published text --><!-- and is protected by international copyright laws. --><!-- The on-line content may be accessed freely for personal use --><!-- but may not be published or retransmitted without explicit permission. --><!-- --><!-- this page built Sat Dec 24 21:47:47 2005 by faqproc version 2.7 --><!-- from source file osdepio.sgml dated Sat Jul 3 17:23:16 2004 --><!-- corresponding to FAQ list version 4.0 --><html><!-- Mirrored from c-faq.com/osdep/sd22.html by HTTrack Website Copier/3.x [XR&CO'2008], Sat, 14 Mar 2009 08:02:27 GMT --><head><meta name=GENERATOR content="faqproc"><link href="http://www.eskimo.com/notfound.html" rev=subdocument><title></title></head><body bgcolor="#ffffff"> <a href="../index-2.html"><img src="../images/buttontop.gif" alt="top/contents"></a><a href="../search.html"><img src="../images/buttonsrch.gif" alt="search"></a><hr>The old termcap library routines,and their later ``terminfo'' replacements,involve a database of device-dependent stringsto be ``printed'' to achieve various results.A program first loads the description of the terminal currently in use(typically named by the environment variable <TT>TERM</TT>),then fetches the various control strings and other parameters it will need,and finally prints those strings as needed.When moving the cursor,the <TT>tgoto</TT> function takes care of encodingthe desired row and column numberusing whatever device-dependent encoding schemeis described in the device-dependent <TT>cm</TT>(``cursor motion'')string.<br><br>Here is a minimal example,which omits error checking and other nuances,but should get you started:<pre>#include <stdio.h>#include <stdlib.h>#include <termcap.h>int main(){ char buf[1024]; char buf2[30]; char *ap = buf2; char *clearstr, *gotostr, *standstr, *stendstr; tgetent(buf, getenv("TERM")); clearstr = tgetstr("cl", &ap); gotostr = tgetstr("cm", &ap); standstr = tgetstr("so", &ap); stendstr = tgetstr("se", &ap); fputs(clearstr, stdout); fputs(tgoto(gotostr, 20, 10), stdout); printf("Hello, "); fputs(standstr, stdout); printf("world"); fputs(stendstr, stdout); putchar('!');}</pre><hr><p><a href="termcap.html" rev=subdocument>back</a></p><hr><p><a href="../questions.html"><img src="../images/buttontop.gif" alt="contents"></a><a href="../search.html"><img src="../images/buttonsrch.gif" alt="search"></a><br><a href="../about.html">about this FAQ list</a> <a href="../eskimo.html">about eskimo</a> <a href="../search.html">search</a> <a href="../feedback.html">feedback</a> <a href="copyright.html">copyright</a><p>Hosted by<a href="http://www.eskimo.com/"><img src="../../www.eskimo.com/img/link/eskitiny.gif" alt="Eskimo North"></a></p></body><!-- Mirrored from c-faq.com/osdep/sd22.html by HTTrack Website Copier/3.x [XR&CO'2008], Sat, 14 Mar 2009 08:02:27 GMT --></html>⌨️ 快捷键说明
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