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==QStackedWidget based wizard==

<source lang="cpp">

Foundations of Qt Development\Chapter09\wizard\main.cpp
/*
* Copyright (c) 2006-2007, Johan Thelin
*
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without modification,
* are permitted provided that the following conditions are met:
*
* * Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
* * Neither the name of APress nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
*/
#include <QApplication>
#include "wizard.h"
int main( int argc, char **argv )
{
QApplication app( argc, argv );

Wizard dlg;
dlg.show();

return app.exec();
}

Foundations of Qt Development\Chapter09\wizard\wizard.cpp
/*
* Copyright (c) 2006-2007, Johan Thelin
*
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without modification,
* are permitted provided that the following conditions are met:
*
* * Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
* * Neither the name of APress nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
*/
#include <QWidget>
#include <QCheckBox>
#include <QTextEdit>
#include <QLabel>
#include <QStackedWidget>
#include <QPushButton>
#include <QGridLayout>
#include <QMessageBox>
#include "wizard.h"
class PageOne : public QWidget
{
public:
PageOne( QWidget *parent = 0 );

QCheckBox *acceptDeal;
};
PageOne::PageOne( QWidget *parent ) : QWidget(parent)
{
QGridLayout *layout = new QGridLayout( this );

QTextEdit *textEdit = new QTextEdit();
textEdit->setReadOnly( true );
textEdit->setHtml( tr("<h1>The Rules</h1>"
"<p>The rules are to be followed!</p>") );

acceptDeal = new QCheckBox( tr("I accept") );

layout->addWidget( textEdit, 0, 0, 1, 2 );
layout->addWidget( acceptDeal, 1, 1 );
}

class PageTwo : public QWidget
{
public:
PageTwo( QWidget *parent = 0 );

QCheckBox *doThis;
QCheckBox *doThat;
QCheckBox *extra;
};
PageTwo::PageTwo( QWidget *parent ) : QWidget(parent)
{
QGridLayout *layout = new QGridLayout( this );
doThis = new QCheckBox( tr("Do this") );
doThat = new QCheckBox( tr("Do that") );
extra = new QCheckBox( tr("Add something extra") );

layout->addWidget( doThis, 0, 0 );
layout->addWidget( doThat, 1, 0 );
layout->addWidget( extra, 2, 0 );

layout->setRowMinimumHeight( 3, 0 );
}

class PageThree : public QWidget
{
public:
PageThree( QWidget *parent = 0 );
};
PageThree::PageThree( QWidget *parent ) : QWidget(parent)
{
QGridLayout *layout = new QGridLayout( this );

layout->addWidget( new QLabel( tr("All is ready. Press finish to get it done!") ), 0, 0 );
}

Wizard::Wizard() : QDialog()
{
QGridLayout *layout = new QGridLayout( this );

QPushButton *cancel = new QPushButton( tr("Cancel") );
next = new QPushButton( tr("Next") );
previous = new QPushButton( tr("Previous" ) );

pages = new QStackedWidget();

layout->addWidget( pages, 0, 0, 1, 5 );
layout->setColumnMinimumWidth( 0, 50 );
layout->addWidget( previous, 1, 1 );
layout->addWidget( next, 1, 2 );
layout->setColumnMinimumWidth( 3, 5 );
layout->addWidget( cancel, 1, 4 );
previous->setEnabled( false );
next->setEnabled( false );

connect( next, SIGNAL(clicked()), this, SLOT(doNext()) );
connect( previous, SIGNAL(clicked()), this, SLOT(doPrev()) );
connect( cancel, SIGNAL(clicked()), this, SLOT(reject()) );

pages->addWidget( pageOne = new PageOne( pages ) );
pages->addWidget( pageTwo = new PageTwo( pages ) );
pages->addWidget( pageThree = new PageThree( pages ) );

connect( pageOne->acceptDeal, SIGNAL(toggled(bool)), next, SLOT(setEnabled(bool)) );
}
void Wizard::doNext()
{
switch( pages->currentIndex() )
{
case 0:
previous->setEnabled( true );

disconnect( pageOne->acceptDeal, SIGNAL(toggled(bool)), next, SLOT(setEnabled(bool)) );

break;
case 1:
next->setText( tr("Finish") );

break;
case 2:
QMessageBox::information( this, tr("Finishing"), tr("Here is where the action takes place.") );
accept();

return;
}

pages->setCurrentIndex( pages->currentIndex()+1 );
}
void Wizard::doPrev()
{
switch( pages->currentIndex() )
{
case 1:
previous->setEnabled( false );
next->setEnabled( pageOne->acceptDeal->isChecked() );
connect( pageOne->acceptDeal, SIGNAL(toggled(bool)), next, SLOT(setEnabled(bool)) );

break;
case 2:
next->setText( tr("Next") );

break;
}
pages->setCurrentIndex( pages->currentIndex()-1 );
}

Foundations of Qt Development\Chapter09\wizard\wizard.h
/*
* Copyright (c) 2006-2007, Johan Thelin
*
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without modification,
* are permitted provided that the following conditions are met:
*
* * Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
* * Neither the name of APress nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
*/
#ifndef WIZARD_H
#define WIZARD_H
#include <QDialog>
class QPushButton;
class QStackedWidget;
class PageOne;
class PageTwo;
class PageThree;
class Wizard : public QDialog
{
Q_OBJECT
public:
Wizard();

private slots:
void doNext();
void doPrev();

private:
QPushButton *next;
QPushButton *previous;

QStackedWidget *pages;

PageOne *pageOne;
PageTwo *pageTwo;
PageThree *pageThree;
};
#endif // WIZARD_H

</source>

==Using QStackedWidget==

<source lang="cpp">
/****************************************************************************
**
** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
** All rights reserved.
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** This file is part of the documentation of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** Commercial Usage
** Licensees holding valid Qt Commercial licenses may use this file in
** accordance with the Qt Commercial License Agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and Nokia.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 2.1 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 2.1 requirements
** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Nokia gives you certain additional
** rights. These rights are described in the Nokia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3.0 as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL included in the
** packaging of this file. Please review the following information to
** ensure the GNU General Public License version 3.0 requirements will be
** met: http://www.gnu.org/copyleft/gpl.html.
**
** If you have questions regarding the use of this file, please contact
** Nokia at qt-info@nokia.com.
** $QT_END_LICENSE$
**
****************************************************************************/
#include <QtGui>
#include <QApplication>
class Widget : public QWidget
{
public:
Widget(QWidget *parent = 0);
};
Widget::Widget(QWidget *parent)
: QWidget(parent)
{
QWidget *firstPageWidget = new QWidget;
QWidget *secondPageWidget = new QWidget;
QWidget *thirdPageWidget = new QWidget;
QStackedWidget *stackedWidget = new QStackedWidget;
stackedWidget->addWidget(firstPageWidget);
stackedWidget->addWidget(secondPageWidget);
stackedWidget->addWidget(thirdPageWidget);

QComboBox *pageComboBox = new QComboBox;
pageComboBox->addItem(tr("Page 1"));
pageComboBox->addItem(tr("Page 2"));
pageComboBox->addItem(tr("Page 3"));
connect(pageComboBox, SIGNAL(activated(int)),
stackedWidget, SLOT(setCurrentIndex(int)));

QVBoxLayout *layout = new QVBoxLayout;
layout->addWidget(pageComboBox);
layout->addWidget(stackedWidget);
setLayout(layout);
}
int main(int argc, char *argv[])
{
QApplication app(argc, argv);
Widget widget;
widget.show();
return app.exec();
}

</source>

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