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265 lines
10 KiB
265 lines
10 KiB
14 years ago
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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
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<!-- /home/espenr/tmp/qt-3.3.8-espenr-2499/qt-x11-free-3.3.8/examples/richtext/richtext.doc:4 -->
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<html>
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<head>
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<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
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<title>Richtext</title>
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<style type="text/css"><!--
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fn { margin-left: 1cm; text-indent: -1cm; }
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a:link { color: #004faf; text-decoration: none }
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a:visited { color: #672967; text-decoration: none }
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body { background: #ffffff; color: black; }
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--></style>
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</head>
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<body>
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<table border="0" cellpadding="0" cellspacing="0" width="100%">
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<tr bgcolor="#E5E5E5">
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<td valign=center>
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<a href="index.html">
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<font color="#004faf">Home</font></a>
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| <a href="classes.html">
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<font color="#004faf">All Classes</font></a>
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| <a href="mainclasses.html">
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<font color="#004faf">Main Classes</font></a>
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| <a href="annotated.html">
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<font color="#004faf">Annotated</font></a>
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| <a href="groups.html">
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<font color="#004faf">Grouped Classes</font></a>
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| <a href="functions.html">
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<font color="#004faf">Functions</font></a>
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</td>
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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>
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<p>
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In this example we demonstrate how to display rich text
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in a widget. To do this some sayings taken from the famous
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Unix "fortune" are displayed nicely formatted.
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<p> <hr>
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<p> Header file:
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<p> <pre>/****************************************************************************
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** $Id: qt/richtext.h 3.3.8 edited Jan 11 14:37 $
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**
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** Copyright (C) 1992-2007 Trolltech ASA. All rights reserved.
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**
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** This file is part of an example program for Qt. This example
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** program may be used, distributed and modified without limitation.
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**
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*****************************************************************************/
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#ifndef RICHTEXT_H
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#define RICHTEXT_H
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#include <<a href="qvbox-h.html">qvbox.h</a>>
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class QTextView;
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class QPushButton;
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class MyRichText : public <a href="qvbox.html">QVBox</a>
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{
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<a href="metaobjects.html#Q_OBJECT">Q_OBJECT</a>
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public:
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MyRichText( <a href="qwidget.html">QWidget</a> *parent = 0, const char *name = 0 );
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protected:
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<a href="qtextview.html">QTextView</a> *view;
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<a href="qpushbutton.html">QPushButton</a> *bClose, *bNext, *bPrev;
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int num;
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protected slots:
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void prev();
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void next();
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};
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#endif
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</pre>
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<p> <hr>
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<p> Implementation:
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<p> <pre>/****************************************************************************
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** $Id: qt/richtext.cpp 3.3.8 edited Jan 11 14:37 $
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**
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** Copyright (C) 1992-2007 Trolltech ASA. All rights reserved.
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**
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** This file is part of an example program for Qt. This example
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** program may be used, distributed and modified without limitation.
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**
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*****************************************************************************/
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#include "richtext.h"
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#include <<a href="qhbox-h.html">qhbox.h</a>>
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#include <<a href="qhbox-h.html">qhbox.h</a>>
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#include <<a href="qpushbutton-h.html">qpushbutton.h</a>>
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#include <<a href="qtextview-h.html">qtextview.h</a>>
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#include <<a href="qbrush-h.html">qbrush.h</a>>
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#include <<a href="qapplication-h.html">qapplication.h</a>>
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static const char* sayings[] = {
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"<b>Saying 1:</b><br>"
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"<hr><br><br>"
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"<big>Evil is that which one believes of others. It is a sin to believe evil "
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"of others, but it is seldom a mistake.</big><br><br>"
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"<center><i>-- H.L. Mencken</i></center>",
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"<b>Saying 2:</b><br>"
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"<hr><br><br>"
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"<big>A well-used door needs no oil on its hinges.<br>"
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"A swift-flowing steam does not grow stagnant.<br>"
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"Neither sound nor thoughts can travel through a vacuum.<br>"
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"Software rots if not used.<br><br>"
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"These are great mysteries.</big><br><br>"
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"<center><i>-- Geoffrey James, \"The Tao of Programming\"</i></center>",
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"<b>Saying 3:</b><br>"
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"<hr><br><br>"
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"<big>Show business is just like high school, except you get paid.</big><br><br>"
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"<center><i>-- Martin Mull</i></center>",
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"<b>Saying 4:</b><br>"
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"<hr><br><br>"
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"<big><b>The Least Successful Executions</b><br>"
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"<twocolumn><p> History has furnished us with two executioners worthy of attention. "
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"The first performed in Sydney in Australia. In 1803 three attempts were "
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"made to hang a Mr. Joseph Samuels. On the first two of these the rope "
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"snapped, while on the third Mr. Samuels just hung there peacefully until he "
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"and everyone else got bored. Since he had proved unsusceptible to capital "
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"punishment, he was reprieved.</p>"
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"<p> The most important British executioner was Mr. James Berry who "
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"tried three times in 1885 to hang Mr. John Lee at Exeter Jail, but on each "
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"occasion failed to get the trap door open.<!p>"
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"<p> In recognition of this achievement, the Home Secretary commuted "
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"Lee's sentence to \"life\" imprisonment. He was released in 1917, emigrated "
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"to America and lived until 1933.</p></twocolumn></big><br><br>"
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"<center><i>-- Stephen Pile, \"The Book of Heroic Failures\"</i></center>",
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"<b>Saying 5:</b><br>"
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"<hr><br><br>"
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"<big>If you can, help others. If you can't, at least don't hurt others.</big><br><br>"
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"<center><i>-- the Dalai Lama</i></center>",
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"<b>Saying 6:</b><br>"
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"<hr><br><br>"
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"<big>Television has brought back murder into the home -- where it belongs.</big><br><br>"
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"<center><i>-- Alfred Hitchcock</i></center>",
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"<b>Saying 7:</b><br>"
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"<hr><br><br>"
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"<big>I don't know who my grandfather was; I am much more concerned to know "
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"what his grandson will be.</big><br><br>"
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"<center><i>-- Abraham Lincoln</i></center>",
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0
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};
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<a name="f255"></a>MyRichText::MyRichText( <a href="qwidget.html">QWidget</a> *parent, const char *name )
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: <a href="qvbox.html">QVBox</a>( parent, name )
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{
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<a href="qframe.html#setMargin">setMargin</a>( 5 );
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view = new <a href="qtextview.html">QTextView</a>( this );
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<a name="x465"></a> view-><a href="qtextedit.html#setText">setText</a>( "This is a <b>Test</b> with <i>italic</i> <u>stuff</u>" );
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<a href="qbrush.html">QBrush</a> paper;
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<a name="x461"></a> paper.<a href="qbrush.html#setPixmap">setPixmap</a>( QPixmap( "../richtext/marble.png" ) );
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<a name="x460"></a> if ( paper.<a href="qbrush.html#pixmap">pixmap</a>() != 0 )
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<a name="x464"></a> view-><a href="qtextedit.html#setPaper">setPaper</a>( paper );
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else
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view-><a href="qtextedit.html#setPaper">setPaper</a>( white );
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view-><a href="qtextedit.html#setText">setText</a>( sayings[0] );
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<a name="x467"></a> view-><a href="qwidget.html#setMinimumSize">setMinimumSize</a>( 450, 250 );
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<a href="qhbox.html">QHBox</a> *buttons = new <a href="qhbox.html">QHBox</a>( this );
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buttons-><a href="qframe.html#setMargin">setMargin</a>( 5 );
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bClose = new <a href="qpushbutton.html">QPushButton</a>( "&Close", buttons );
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bPrev = new <a href="qpushbutton.html">QPushButton</a>( "<< &Prev", buttons );
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bNext = new <a href="qpushbutton.html">QPushButton</a>( "&Next >>", buttons );
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<a name="x466"></a> bPrev-><a href="qwidget.html#setEnabled">setEnabled</a>( FALSE );
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<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>() ) );
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<a href="qobject.html#connect">connect</a>( bPrev, SIGNAL( <a href="qbutton.html#clicked">clicked</a>() ), this, SLOT( prev() ) );
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<a href="qobject.html#connect">connect</a>( bNext, SIGNAL( <a href="qbutton.html#clicked">clicked</a>() ), this, SLOT( next() ) );
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num = 0;
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}
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void <a name="f256"></a>MyRichText::prev()
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{
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if ( num <= 0 )
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return;
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num--;
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view-><a href="qtextedit.html#setText">setText</a>( sayings[num] );
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if ( num == 0 )
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bPrev-><a href="qwidget.html#setEnabled">setEnabled</a>( FALSE );
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bNext-><a href="qwidget.html#setEnabled">setEnabled</a>( TRUE );
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}
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void <a name="f257"></a>MyRichText::next()
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{
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if ( !sayings[++num] )
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return;
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view-><a href="qtextedit.html#setText">setText</a>( sayings[num] );
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if ( !sayings[num + 1] )
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bNext-><a href="qwidget.html#setEnabled">setEnabled</a>( FALSE );
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bPrev-><a href="qwidget.html#setEnabled">setEnabled</a>( TRUE );
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}
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</pre>
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<p> <hr>
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<p> Main:
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<p> <pre>/****************************************************************************
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** $Id: qt/main.cpp 3.3.8 edited Jan 11 14:37 $
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**
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** Copyright (C) 1992-2007 Trolltech ASA. All rights reserved.
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**
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** This file is part of an example program for Qt. This example
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** program may be used, distributed and modified without limitation.
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**
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*****************************************************************************/
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#include "richtext.h"
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#include <<a href="qapplication-h.html">qapplication.h</a>>
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int main( int argc, char **argv )
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{
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<a href="qapplication.html">QApplication</a> a( argc, argv );
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MyRichText richtext;
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richtext.<a href="qwidget.html#resize">resize</a>( 450, 350 );
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richtext.<a href="qwidget.html#setCaption">setCaption</a>( "Qt Example - Richtext" );
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a.<a href="qapplication.html#setMainWidget">setMainWidget</a>( &richtext );
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richtext.<a href="qwidget.html#show">show</a>();
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return a.<a href="qapplication.html#exec">exec</a>();
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}
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</pre>
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<p>See also <a href="examples.html">Examples</a>.
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<!-- eof -->
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<p><address><hr><div align=center>
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<table width=100% cellspacing=0 border=0><tr>
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<td>Copyright © 2007
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<a href="troll.html">Trolltech</a><td align=center><a href="trademarks.html">Trademarks</a>
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<td align=right><div align=right>Qt 3.3.8</div>
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</table></div></address></body>
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</html>
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