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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"><html><head><meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1"><title>Qt Toolkit - richtext/main.cpp example file</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: white; color: black; }--></style></head><body bgcolor="#ffffff"><table width="100%"><tr><td><a href="index.html"><img width="100" height="100" src="qtlogo.png"alt="Home" border="0"><img width="100"height="100" src="face.png" alt="Home" border="0"></a><td valign="top"><div align="right"><img src="dochead.png" width="472" height="27"><br><a href="classes.html"><b>Classes</b></a>- <a href="annotated.html">Annotated</a>- <a href="hierarchy.html">Tree</a>- <a href="functions.html">Functions</a>- <a href="index.html">Home</a>- <a href="topicals.html"><b>Structure</b>  <font face="Arial,Helvetica,Geneva,Swiss,SunSans-Regular" align="center" size=32>Qte</font></a></div></table><h1 align=center>Richtext</h1><br clear="all">  In this examples it's demonstrated how to display rich text, using  Qt, in a widget. In this example some sayings taken from the famous  Unix "Fortune" are displayed nicely formatted.  <hr>  Header file: <pre>/****************************************************************************** &#36;Id&#58; qt/examples/richtext/richtext.h   2.3.8   edited 2004-05-12 $**** 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 &lt;<a href="qvbox-h.html">qvbox.h</a>&gt;class QTextView;class QPushButton;class MyRichText : public QVBox{    Q_OBJECTpublic:    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>  <hr>  Implementation: <pre>/****************************************************************************** &#36;Id&#58; qt/examples/richtext/richtext.cpp   2.3.8   edited 2004-05-12 $**** 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 &lt;<a href="qhbox-h.html">qhbox.h</a>&gt;#include &lt;<a href="qhbox-h.html">qhbox.h</a>&gt;#include &lt;<a href="qpushbutton-h.html">qpushbutton.h</a>&gt;#include &lt;<a href="qtextview-h.html">qtextview.h</a>&gt;#include &lt;<a href="qbrush-h.html">qbrush.h</a>&gt;#include &lt;<a href="qapplication-h.html">qapplication.h</a>&gt;static const char* sayings[] = {    "&lt;b&gt;Saying 1:&lt;/b&gt;&lt;br&gt;"    "&lt;hr&gt;&lt;br&gt;&lt;br&gt;"    "&lt;big&gt;Evil is that which one believes of others.  It is a sin to believe evil "    "of others, but it is seldom a mistake.&lt;/big&gt;&lt;br&gt;&lt;br&gt;"    "&lt;center&gt;&lt;i&gt;-- H.L. Mencken&lt;/i&gt;&lt;/center&gt;",    "&lt;b&gt;Saying 2:&lt;/b&gt;&lt;br&gt;"    "&lt;hr&gt;&lt;br&gt;&lt;br&gt;"    "&lt;big&gt;A well-used door needs no oil on its hinges.&lt;br&gt;"    "A swift-flowing steam does not grow stagnant.&lt;br&gt;"    "Neither sound nor thoughts can travel through a vacuum.&lt;br&gt;"    "Software rots if not used.&lt;br&gt;&lt;br&gt;"    "These are great mysteries.&lt;/big&gt;&lt;br&gt;&lt;br&gt;"    "&lt;center&gt;&lt;i&gt;-- Geoffrey James, \"The Tao of Programming\"&lt;/i&gt;&lt;/center&gt;",    "&lt;b&gt;Saying 3:&lt;/b&gt;&lt;br&gt;"    "&lt;hr&gt;&lt;br&gt;&lt;br&gt;"    "&lt;big&gt;Show business is just like high school, except you get paid.&lt;/big&gt;&lt;br&gt;&lt;br&gt;"    "&lt;center&gt;&lt;i&gt;-- Martin Mull&lt;/i&gt;&lt;/center&gt;",    "&lt;b&gt;Saying 4:&lt;/b&gt;&lt;br&gt;"    "&lt;hr&gt;&lt;br&gt;&lt;br&gt;"    "&lt;big&gt;&lt;b&gt;The Least Successful Executions&lt;/b&gt;&lt;br&gt;"    "&lt;twocolumn&gt;&lt;p&gt;      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.&lt;/p&gt;"    "&lt;p&gt;        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.&lt;!p&gt;"    "&lt;p&gt;        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.&lt;/p&gt;&lt;/twocolumn&gt;&lt;/big&gt;&lt;br&gt;&lt;br&gt;"    "&lt;center&gt;&lt;i&gt;-- Stephen Pile, \"The Book of Heroic Failures\"&lt;/i&gt;&lt;/center&gt;",    "&lt;b&gt;Saying 5:&lt;/b&gt;&lt;br&gt;"    "&lt;hr&gt;&lt;br&gt;&lt;br&gt;"    "&lt;big&gt;If you can, help others.  If you can't, at least don't hurt others.&lt;/big&gt;&lt;br&gt;&lt;br&gt;"    "&lt;center&gt;&lt;i&gt;-- the Dalai Lama&lt;/i&gt;&lt;/center&gt;",    "&lt;b&gt;Saying 6:&lt;/b&gt;&lt;br&gt;"    "&lt;hr&gt;&lt;br&gt;&lt;br&gt;"    "&lt;big&gt;Television has brought back murder into the home -- where it belongs.&lt;/big&gt;&lt;br&gt;&lt;br&gt;"    "&lt;center&gt;&lt;i&gt;-- Alfred Hitchcock&lt;/i&gt;&lt;/center&gt;",    "&lt;b&gt;Saying 7:&lt;/b&gt;&lt;br&gt;"    "&lt;hr&gt;&lt;br&gt;&lt;br&gt;"    "&lt;big&gt;I don't know who my grandfather was; I am much more concerned to know "    "what his grandson will be.&lt;/big&gt;&lt;br&gt;&lt;br&gt;"    "&lt;center&gt;&lt;i&gt;-- Abraham Lincoln&lt;/i&gt;&lt;/center&gt;",    0};MyRichText::MyRichText( <a href="qwidget.html">QWidget</a> *parent, const char *name )    : <a href="qvbox.html">QVBox</a>( parent, name ){    <a href="qframe.html#b11d00">setMargin</a>( 5 );    view = new <a href="qtextview.html">QTextView</a>( this );    view-&gt;setText( "This is a &lt;b&gt;Test&lt;/b&gt; with &lt;i&gt;italic&lt;/i&gt; &lt;u&gt;stuff&lt;/u&gt;" );    <a href="qbrush.html">QBrush</a> paper;    paper.<a href="qbrush.html#406414">setPixmap</a>( <a href="qpixmap.html">QPixmap</a>( "../richtext/marble.png" ) );    view-&gt;setPaper( paper );    view-&gt;setText( sayings[0] );    view-&gt;setMinimumSize( 450, 250 );    <a href="qhbox.html">QHBox</a> *buttons = new <a href="qhbox.html">QHBox</a>( this );    buttons-&gt;<a href="qframe.html#b11d00">setMargin</a>( 5 );    bClose = new <a href="qpushbutton.html">QPushButton</a>( "&amp;Close", buttons );    bPrev = new <a href="qpushbutton.html">QPushButton</a>( "&lt;&lt; &amp;Prev", buttons );    bNext = new <a href="qpushbutton.html">QPushButton</a>( "&amp;Next &gt;&gt;", buttons );    bPrev-&gt;setEnabled( FALSE );    <a href="qobject.html#fbde73">connect</a>( bClose, SIGNAL( clicked() ), qApp, SLOT( quit() ) );    <a href="qobject.html#fbde73">connect</a>( bPrev, SIGNAL( clicked() ), this, SLOT( <a href=#156>prev</a>() ) );    <a href="qobject.html#fbde73">connect</a>( bNext, SIGNAL( clicked() ), this, SLOT( <a href=#157>next</a>() ) );    num = 0;}void <a name="156"></a>MyRichText::prev(){    if ( num &lt;= 0 )        return;    num--;    view-&gt;setText( sayings[num] );    if ( num == 0 )        bPrev-&gt;setEnabled( FALSE );    bNext-&gt;setEnabled( TRUE );}void <a name="157"></a>MyRichText::next(){    if ( !sayings[++num] )        return;    view-&gt;setText( sayings[num] );    if ( !sayings[num + 1] )        bNext-&gt;setEnabled( FALSE );    bPrev-&gt;setEnabled( TRUE );}</pre>  <hr>  Main:<pre>/****************************************************************************** &#36;Id&#58; qt/examples/richtext/main.cpp   2.3.8   edited 2004-05-12 $**** 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 &lt;<a name="qapplication.h"></a><a href="qapplication-h.html">qapplication.h</a>&gt;int main( int argc, char **argv ){    <a name="QApplication"></a><a href="qapplication.html">QApplication</a> a( argc, argv );    MyRichText richtext;    richtext.<a name="resize"></a><a href="qwidget.html#ff9d07">resize</a>( 450, 350 );    richtext.<a name="setCaption"></a><a href="qwidget.html#d6a291">setCaption</a>( "Qt Example - Richtext" );    a.<a name="setMainWidget"></a><a href="qapplication.html#7ad759">setMainWidget</a>( &amp;richtext );    richtext.<a name="show"></a><a href="qwidget.html#200ee5">show</a>();    return a.<a name="exec"></a><a href="qapplication.html#84c7bf">exec</a>();}</pre><p><address><hr><div align="center"><table width="100%" cellspacing="0" border="0"><tr><td>Copyright

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