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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<!-- /home/espenr/tmp/qt-3.3.8-espenr-2499/qt-x11-free-3.3.8/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"><!--
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--></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>
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<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 text
in a widget. To do this some sayings taken from the famous
Unix "fortune" are displayed nicely formatted.
<p> <hr>
<p> Header file:
<p> <pre>/****************************************************************************
** $Id: qt/richtext.h   3.3.8   edited Jan 11 14:37 $
**
** Copyright (C) 1992-2007 Trolltech ASA.  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 <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   3.3.8   edited Jan 11 14:37 $
**
** Copyright (C) 1992-2007 Trolltech ASA.  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
};


<a name="f255"></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="x465"></a>    view-&gt;<a href="qtextedit.html#setText">setText</a>( "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;
<a name="x461"></a>    paper.<a href="qbrush.html#setPixmap">setPixmap</a>( QPixmap( "../richtext/marble.png" ) );
<a name="x460"></a>    if ( paper.<a href="qbrush.html#pixmap">pixmap</a>() != 0 )
<a name="x464"></a>        view-&gt;<a href="qtextedit.html#setPaper">setPaper</a>( paper );
    else
        view-&gt;<a href="qtextedit.html#setPaper">setPaper</a>( white );

    view-&gt;<a href="qtextedit.html#setText">setText</a>( sayings[0] );
<a name="x467"></a>    view-&gt;<a href="qwidget.html#setMinimumSize">setMinimumSize</a>( 450, 250 );

    <a href="qhbox.html">QHBox</a> *buttons = new <a href="qhbox.html">QHBox</a>( this );
    buttons-&gt;<a href="qframe.html#setMargin">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 );

<a name="x466"></a>    bPrev-&gt;<a href="qwidget.html#setEnabled">setEnabled</a>( FALSE );

<a name="x462"></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="f256"></a>MyRichText::prev()
{
    if ( num &lt;= 0 )
        return;

    num--;

    view-&gt;<a href="qtextedit.html#setText">setText</a>( sayings[num] );

    if ( num == 0 )
        bPrev-&gt;<a href="qwidget.html#setEnabled">setEnabled</a>( FALSE );

    bNext-&gt;<a href="qwidget.html#setEnabled">setEnabled</a>( TRUE );
}

void <a name="f257"></a>MyRichText::next()
{
    if ( !sayings[++num] )
        return;

    view-&gt;<a href="qtextedit.html#setText">setText</a>( sayings[num] );

    if ( !sayings[num + 1] )
        bNext-&gt;<a href="qwidget.html#setEnabled">setEnabled</a>( FALSE );

    bPrev-&gt;<a href="qwidget.html#setEnabled">setEnabled</a>( TRUE );
}





</pre>

<p> <hr>
<p> Main:
<p> <pre>/****************************************************************************
** $Id: qt/main.cpp   3.3.8   edited Jan 11 14:37 $
**
** Copyright (C) 1992-2007 Trolltech ASA.  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="qapplication-h.html">qapplication.h</a>&gt;

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>( &amp;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>.

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