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< title > Richtext< / title >
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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 TQt. 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 TQTextView;
class TQPushButton;
class MyRichText : public < a href = "qvbox.html" > TQVBox< / a >
{
< a href = "metaobjects.html#Q_OBJECT" > Q_OBJECT< / a >
public:
MyRichText( < a href = "qwidget.html" > TQWidget< / a > *parent = 0, const char *name = 0 );
protected:
< a href = "qtextview.html" > TQTextView< / a > *view;
< a href = "qpushbutton.html" > TQPushButton< / 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 TQt. 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 = "f255" > < / a > MyRichText::MyRichText( < a href = "qwidget.html" > TQWidget< / a > *parent, const char *name )
: < a href = "qvbox.html" > TQVBox< / a > ( parent, name )
{
< a href = "qframe.html#setMargin" > setMargin< / a > ( 5 );
view = new < a href = "qtextview.html" > TQTextView< / a > ( this );
< 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> " );
< a href = "qbrush.html" > TQBrush< / a > paper;
< a name = "x461" > < / a > paper.< a href = "qbrush.html#setPixmap" > setPixmap< / a > ( TQPixmap( "../richtext/marble.png" ) );
< a name = "x460" > < / a > if ( paper.< a href = "qbrush.html#pixmap" > pixmap< / a > () != 0 )
< a name = "x464" > < / 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 = "x467" > < / a > view-> < a href = "qwidget.html#setMinimumSize" > setMinimumSize< / a > ( 450, 250 );
< a href = "qhbox.html" > TQHBox< / a > *buttons = new < a href = "qhbox.html" > TQHBox< / a > ( this );
buttons-> < a href = "qframe.html#setMargin" > setMargin< / a > ( 5 );
bClose = new < a href = "qpushbutton.html" > TQPushButton< / a > ( "& Close", buttons );
bPrev = new < a href = "qpushbutton.html" > TQPushButton< / a > ( "< < & Prev", buttons );
bNext = new < a href = "qpushbutton.html" > TQPushButton< / a > ( "& Next > > ", buttons );
< a name = "x466" > < / a > bPrev-> < 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 < = 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 = "f257" > < / 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 3.3.8 edited Jan 11 14:37 $
**
** Copyright (C) 1992-2007 Trolltech ASA. All rights reserved.
**
** This file is part of an example program for TQt. 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" > TQApplication< / a > a( argc, argv );
MyRichText richtext;
richtext.< a href = "qwidget.html#resize" > resize< / a > ( 450, 350 );
richtext.< a href = "qwidget.html#setCaption" > setCaption< / a > ( "TQt 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 > .
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