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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"><!-- /home/reggie/tmp/qt-3.0-reggie-5401/qt-x11-commercial-3.0.5/examples/richtext/richtext.doc:4 --><html><head><meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1"><title>Richtext</title><style type="text/css"><!--h3.fn,span.fn { margin-left: 1cm; text-indent: -1cm; }a:link { color: #004faf; text-decoration: none }a:visited { color: #672967; text-decoration: none }body { background: #ffffff; color: black; }--></style></head><body><table border="0" cellpadding="0" cellspacing="0" width="100%"><tr bgcolor="#E5E5E5"><td valign=center> <a href="index.html"><font color="#004faf">Home</font></a> | <a href="classes.html"><font color="#004faf">All Classes</font></a> | <a href="mainclasses.html"><font color="#004faf">Main Classes</font></a> | <a href="annotated.html"><font color="#004faf">Annotated</font></a> | <a href="groups.html"><font color="#004faf">Grouped Classes</font></a> | <a href="functions.html"><font color="#004faf">Functions</font></a></td><td align="right" valign="center"><img src="logo32.png" align="right" width="64" height="32" border="0"></td></tr></table><h1 align=center>Richtext</h1> <p> In this example we demonstrate how to display rich textin a widget. To do this some sayings taken from the famousUnix "fortune" are displayed nicely formatted.<p> <hr><p> Header file:<p> <pre>/****************************************************************************** $Id: qt/richtext.h 3.0.5 edited Oct 12 2001 $**** Copyright (C) 1992-2000 Trolltech AS. All rights reserved.**** This file is part of an example program for Qt. This example** program may be used, distributed and modified without limitation.*******************************************************************************/#ifndef RICHTEXT_H#define RICHTEXT_H#include <<a href="qvbox-h.html">qvbox.h</a>>class QTextView;class QPushButton;class MyRichText : public <a href="qvbox.html">QVBox</a>{ <a href="metaobjects.html#Q_OBJECT">Q_OBJECT</a>public: MyRichText( <a href="qwidget.html">QWidget</a> *parent = 0, const char *name = 0 );protected: <a href="qtextview.html">QTextView</a> *view; <a href="qpushbutton.html">QPushButton</a> *bClose, *bNext, *bPrev; int num;protected slots: void prev(); void next();};#endif</pre><p> <hr><p> Implementation:<p> <pre>/****************************************************************************** $Id: qt/richtext.cpp 3.0.5 edited Oct 22 2001 $**** Copyright (C) 1992-2000 Trolltech AS. All rights reserved.**** This file is part of an example program for Qt. This example** program may be used, distributed and modified without limitation.*******************************************************************************/#include "richtext.h"#include <<a href="qhbox-h.html">qhbox.h</a>>#include <<a href="qhbox-h.html">qhbox.h</a>>#include <<a href="qpushbutton-h.html">qpushbutton.h</a>>#include <<a href="qtextview-h.html">qtextview.h</a>>#include <<a href="qbrush-h.html">qbrush.h</a>>#include <<a href="qapplication-h.html">qapplication.h</a>>static const char* sayings[] = { "<b>Saying 1:</b><br>" "<hr><br><br>" "<big>Evil is that which one believes of others. It is a sin to believe evil " "of others, but it is seldom a mistake.</big><br><br>" "<center><i>-- H.L. Mencken</i></center>", "<b>Saying 2:</b><br>" "<hr><br><br>" "<big>A well-used door needs no oil on its hinges.<br>" "A swift-flowing steam does not grow stagnant.<br>" "Neither sound nor thoughts can travel through a vacuum.<br>" "Software rots if not used.<br><br>" "These are great mysteries.</big><br><br>" "<center><i>-- Geoffrey James, \"The Tao of Programming\"</i></center>", "<b>Saying 3:</b><br>" "<hr><br><br>" "<big>Show business is just like high school, except you get paid.</big><br><br>" "<center><i>-- Martin Mull</i></center>", "<b>Saying 4:</b><br>" "<hr><br><br>" "<big><b>The Least Successful Executions</b><br>" "<twocolumn><p> History has furnished us with two executioners worthy of attention. " "The first performed in Sydney in Australia. In 1803 three attempts were " "made to hang a Mr. Joseph Samuels. On the first two of these the rope " "snapped, while on the third Mr. Samuels just hung there peacefully until he " "and everyone else got bored. Since he had proved unsusceptible to capital " "punishment, he was reprieved.</p>" "<p> The most important British executioner was Mr. James Berry who " "tried three times in 1885 to hang Mr. John Lee at Exeter Jail, but on each " "occasion failed to get the trap door open.<!p>" "<p> In recognition of this achievement, the Home Secretary commuted " "Lee's sentence to \"life\" imprisonment. He was released in 1917, emigrated " "to America and lived until 1933.</p></twocolumn></big><br><br>" "<center><i>-- Stephen Pile, \"The Book of Heroic Failures\"</i></center>", "<b>Saying 5:</b><br>" "<hr><br><br>" "<big>If you can, help others. If you can't, at least don't hurt others.</big><br><br>" "<center><i>-- the Dalai Lama</i></center>", "<b>Saying 6:</b><br>" "<hr><br><br>" "<big>Television has brought back murder into the home -- where it belongs.</big><br><br>" "<center><i>-- Alfred Hitchcock</i></center>", "<b>Saying 7:</b><br>" "<hr><br><br>" "<big>I don't know who my grandfather was; I am much more concerned to know " "what his grandson will be.</big><br><br>" "<center><i>-- Abraham Lincoln</i></center>", 0};<a name="f250"></a>MyRichText::MyRichText( <a href="qwidget.html">QWidget</a> *parent, const char *name ) : <a href="qvbox.html">QVBox</a>( parent, name ){ <a href="qframe.html#setMargin">setMargin</a>( 5 ); view = new <a href="qtextview.html">QTextView</a>( this );<a name="x584"></a> view-><a href="qtextedit.html#setText">setText</a>( "This is a <b>Test</b> with <i>italic</i> <u>stuff</u>" ); <a href="qbrush.html">QBrush</a> paper;<a name="x580"></a> paper.<a href="qbrush.html#setPixmap">setPixmap</a>( QPixmap( "../richtext/marble.png" ) );<a name="x579"></a> if ( paper.<a href="qbrush.html#pixmap">pixmap</a>() != 0 )<a name="x583"></a> view-><a href="qtextedit.html#setPaper">setPaper</a>( paper ); else view-><a href="qtextedit.html#setPaper">setPaper</a>( white ); view-><a href="qtextedit.html#setText">setText</a>( sayings[0] );<a name="x586"></a> view-><a href="qwidget.html#setMinimumSize">setMinimumSize</a>( 450, 250 ); <a href="qhbox.html">QHBox</a> *buttons = new <a href="qhbox.html">QHBox</a>( this );<a name="x582"></a> buttons-><a href="qframe.html#setMargin">setMargin</a>( 5 ); bClose = new <a href="qpushbutton.html">QPushButton</a>( "&Close", buttons ); bPrev = new <a href="qpushbutton.html">QPushButton</a>( "<< &Prev", buttons ); bNext = new <a href="qpushbutton.html">QPushButton</a>( "&Next >>", buttons );<a name="x585"></a> bPrev-><a href="qwidget.html#setEnabled">setEnabled</a>( FALSE );<a name="x581"></a> <a href="qobject.html#connect">connect</a>( bClose, SIGNAL( <a href="qbutton.html#clicked">clicked</a>() ), qApp, SLOT( <a href="qapplication.html#quit">quit</a>() ) ); <a href="qobject.html#connect">connect</a>( bPrev, SIGNAL( <a href="qbutton.html#clicked">clicked</a>() ), this, SLOT( prev() ) ); <a href="qobject.html#connect">connect</a>( bNext, SIGNAL( <a href="qbutton.html#clicked">clicked</a>() ), this, SLOT( next() ) ); num = 0;}void <a name="f251"></a>MyRichText::prev(){ if ( num <= 0 ) return; num--; view-><a href="qtextedit.html#setText">setText</a>( sayings[num] ); if ( num == 0 ) bPrev-><a href="qwidget.html#setEnabled">setEnabled</a>( FALSE ); bNext-><a href="qwidget.html#setEnabled">setEnabled</a>( TRUE );}void <a name="f252"></a>MyRichText::next(){ if ( !sayings[++num] ) return; view-><a href="qtextedit.html#setText">setText</a>( sayings[num] ); if ( !sayings[num + 1] ) bNext-><a href="qwidget.html#setEnabled">setEnabled</a>( FALSE ); bPrev-><a href="qwidget.html#setEnabled">setEnabled</a>( TRUE );}</pre><p> <hr><p> Main:<p> <pre>/****************************************************************************** $Id: qt/main.cpp 3.0.5 edited Oct 12 2001 $**** Copyright (C) 1992-2000 Trolltech AS. All rights reserved.**** This file is part of an example program for Qt. This example** program may be used, distributed and modified without limitation.*******************************************************************************/#include "richtext.h"#include <<a href="qapplication-h.html">qapplication.h</a>>int main( int argc, char **argv ){ <a href="qapplication.html">QApplication</a> a( argc, argv ); MyRichText richtext; richtext.<a href="qwidget.html#resize">resize</a>( 450, 350 ); richtext.<a href="qwidget.html#setCaption">setCaption</a>( "Qt Example - Richtext" ); a.<a href="qapplication.html#setMainWidget">setMainWidget</a>( &richtext ); richtext.<a href="qwidget.html#show">show</a>(); return a.<a href="qapplication.html#exec">exec</a>();}</pre><p>See also <a href="examples.html">Examples</a>.<!-- eof --><p><address><hr><div align=center><table width=100% cellspacing=0 border=0><tr><td>Copyright © 2002 <a href="http://www.trolltech.com">Trolltech</a><td><a href="http://www.trolltech.com/trademarks.html">Trademarks</a><td align=right><div align=right>Qt version 3.0.5</div></table></div></address></body></html>⌨️ 快捷键说明
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