C++/Qt/QListWidget

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Adding one item to QListWidget

  
/*
 * 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 "listwidgetdialog.h"
#include <QListWidget>
#include <QPushButton>
#include <QGridLayout>
ListWidgetDialog::ListWidgetDialog() : QDialog(0)
{
  QPushButton *left, *right;
  QGridLayout *layout = new QGridLayout( this );
  layout->addWidget( left = new QPushButton( "<<" ), 0, 1 );
  layout->addWidget( right = new QPushButton( ">>" ), 1, 1 );
  layout->addWidget( leftList = new QListWidget(), 0, 0, 3, 1 );
  layout->addWidget( rightList = new QListWidget(), 0, 2, 3, 1 );
  
  connect( left, SIGNAL(clicked()), this, SLOT(moveLeft()) );
  connect( right, SIGNAL(clicked()), this, SLOT(moveRight()) );
  QStringList items;
  items << "Argentine" << "Brazilian" << "South African" 
        << "USA West" << "Monaco" << "Belgian" << "Spanish" 
        << "Swedish" << "French" << "British" << "German" 
        << "Austrian" << "Dutch" << "Italian" << "USA East" 
        << "Canadian";  
  leftList->addItems( items );
}
  
void ListWidgetDialog::moveLeft()
{
  if( rightList->selectedItems().count() != 1 )
    return;
    
  QListWidgetItem *item = rightList->takeItem( rightList->currentRow() );
  leftList->addItem( item );
}
void ListWidgetDialog::moveRight()
{
  if( leftList->selectedItems().count() != 1 )
    return;
    
  QListWidgetItem *item = leftList->takeItem( leftList->currentRow() );
  rightList->addItem( item );
}

Chapter03\listwidget\listwidgetdialog.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 LISTWIDGETDIALOG_H
#define LISTWIDGETDIALOG_H
#include <QDialog>
class QListWidget;
class ListWidgetDialog : public QDialog
{
  Q_OBJECT
  
public:
  ListWidgetDialog();
  
public slots:
  void moveLeft();
  void moveRight();
  
private:
  QListWidget *leftList;
  QListWidget *rightList;
};
#endif // LISTWIDGETDIALOG_H

Chapter03\listwidget\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 "listwidgetdialog.h"
int main( int argc, char **argv )
{
  QApplication app( argc, argv );
  
  ListWidgetDialog dlg;
  dlg.show();
  
  return app.exec();
}


Get currentRow() from QListWidget

  
/*
 * 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 "listwidgetdialog.h"
#include <QListWidget>
#include <QPushButton>
#include <QGridLayout>
ListWidgetDialog::ListWidgetDialog() : QDialog(0)
{
  QPushButton *left, *right;
  QGridLayout *layout = new QGridLayout( this );
  layout->addWidget( left = new QPushButton( "<<" ), 0, 1 );
  layout->addWidget( right = new QPushButton( ">>" ), 1, 1 );
  layout->addWidget( leftList = new QListWidget(), 0, 0, 3, 1 );
  layout->addWidget( rightList = new QListWidget(), 0, 2, 3, 1 );
  
  connect( left, SIGNAL(clicked()), this, SLOT(moveLeft()) );
  connect( right, SIGNAL(clicked()), this, SLOT(moveRight()) );
  QStringList items;
  items << "Argentine" << "Brazilian" << "South African" 
        << "USA West" << "Monaco" << "Belgian" << "Spanish" 
        << "Swedish" << "French" << "British" << "German" 
        << "Austrian" << "Dutch" << "Italian" << "USA East" 
        << "Canadian";  
  leftList->addItems( items );
}
  
void ListWidgetDialog::moveLeft()
{
  if( rightList->selectedItems().count() != 1 )
    return;
    
  QListWidgetItem *item = rightList->takeItem( rightList->currentRow() );
  leftList->addItem( item );
}
void ListWidgetDialog::moveRight()
{
  if( leftList->selectedItems().count() != 1 )
    return;
    
  QListWidgetItem *item = leftList->takeItem( leftList->currentRow() );
  rightList->addItem( item );
}

Chapter03\listwidget\listwidgetdialog.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 LISTWIDGETDIALOG_H
#define LISTWIDGETDIALOG_H
#include <QDialog>
class QListWidget;
class ListWidgetDialog : public QDialog
{
  Q_OBJECT
  
public:
  ListWidgetDialog();
  
public slots:
  void moveLeft();
  void moveRight();
  
private:
  QListWidget *leftList;
  QListWidget *rightList;
};
#endif // LISTWIDGETDIALOG_H

Chapter03\listwidget\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 "listwidgetdialog.h"
int main( int argc, char **argv )
{
  QApplication app( argc, argv );
  
  ListWidgetDialog dlg;
  dlg.show();
  
  return app.exec();
}


Get selected Items count from QListWidget

  
/*
 * 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 "listwidgetdialog.h"
#include <QListWidget>
#include <QPushButton>
#include <QGridLayout>
ListWidgetDialog::ListWidgetDialog() : QDialog(0)
{
  QPushButton *left, *right;
  QGridLayout *layout = new QGridLayout( this );
  layout->addWidget( left = new QPushButton( "<<" ), 0, 1 );
  layout->addWidget( right = new QPushButton( ">>" ), 1, 1 );
  layout->addWidget( leftList = new QListWidget(), 0, 0, 3, 1 );
  layout->addWidget( rightList = new QListWidget(), 0, 2, 3, 1 );
  
  connect( left, SIGNAL(clicked()), this, SLOT(moveLeft()) );
  connect( right, SIGNAL(clicked()), this, SLOT(moveRight()) );
  QStringList items;
  items << "Argentine" << "Brazilian" << "South African" 
        << "USA West" << "Monaco" << "Belgian" << "Spanish" 
        << "Swedish" << "French" << "British" << "German" 
        << "Austrian" << "Dutch" << "Italian" << "USA East" 
        << "Canadian";  
  leftList->addItems( items );
}
  
void ListWidgetDialog::moveLeft()
{
  if( rightList->selectedItems().count() != 1 )
    return;
    
  QListWidgetItem *item = rightList->takeItem( rightList->currentRow() );
  leftList->addItem( item );
}
void ListWidgetDialog::moveRight()
{
  if( leftList->selectedItems().count() != 1 )
    return;
    
  QListWidgetItem *item = leftList->takeItem( leftList->currentRow() );
  rightList->addItem( item );
}

Chapter03\listwidget\listwidgetdialog.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 LISTWIDGETDIALOG_H
#define LISTWIDGETDIALOG_H
#include <QDialog>
class QListWidget;
class ListWidgetDialog : public QDialog
{
  Q_OBJECT
  
public:
  ListWidgetDialog();
  
public slots:
  void moveLeft();
  void moveRight();
  
private:
  QListWidget *leftList;
  QListWidget *rightList;
};
#endif // LISTWIDGETDIALOG_H

Chapter03\listwidget\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 "listwidgetdialog.h"
int main( int argc, char **argv )
{
  QApplication app( argc, argv );
  
  ListWidgetDialog dlg;
  dlg.show();
  
  return app.exec();
}


QListWidget drag and drop

  
/****************************************************************************
**
** 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.
** $QT_END_LICENSE$
**
****************************************************************************/
#ifndef WINDOW_H
#define WINDOW_H
#include <QMainWindow>
class QListWidget;
class QListWidgetItem;
class MainWindow : public QMainWindow
{
    Q_OBJECT
public:
    MainWindow();
private:
    void setupListItems();
    QListWidget *listWidget;
};
#endif


#include <QtGui>
#include "mainwindow.h"
MainWindow::MainWindow()
{
    QMenu *fileMenu = new QMenu(tr("&File"));
    QAction *quitAction = fileMenu->addAction(tr("E&xit"));
    quitAction->setShortcut(tr("Ctrl+Q"));
    menuBar()->addMenu(fileMenu);
//  For convenient quoting:
QListWidget *listWidget = new QListWidget(this);
listWidget->setSelectionMode(QAbstractItemView::SingleSelection);
listWidget->setDragEnabled(true);
listWidget->viewport()->setAcceptDrops(true);
listWidget->setDropIndicatorShown(true);
 
listWidget->setDragDropMode(QAbstractItemView::InternalMove);

    this->listWidget = listWidget;
    connect(quitAction, SIGNAL(triggered()), this, SLOT(close()));
    setupListItems();
    setCentralWidget(listWidget);
    setWindowTitle(tr("List Widget"));
}
void MainWindow::setupListItems()
{
    QListWidgetItem *item;
    item = new QListWidgetItem(tr("Oak"), listWidget);
    item = new QListWidgetItem(tr("Fir"), listWidget);
    item = new QListWidgetItem(tr("Pine"), listWidget);
    item = new QListWidgetItem(tr("Birch"), listWidget);
    item = new QListWidgetItem(tr("Hazel"), listWidget);
    item = new QListWidgetItem(tr("Redwood"), listWidget);
    item = new QListWidgetItem(tr("Sycamore"), listWidget);
    item = new QListWidgetItem(tr("Chestnut"), listWidget);
    item = new QListWidgetItem(tr("Mahogany"), listWidget);
}


#include <QtGui>
#include "mainwindow.h"
int main(int argc, char *argv[])
{
    QApplication app(argc, argv);
    MainWindow *window = new MainWindow;
    window->show();
    return app.exec();
}


QListWidget: Insert items and remove items

  
/****************************************************************************
**
** 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.
** $QT_END_LICENSE$
**
****************************************************************************/
#ifndef WINDOW_H
#define WINDOW_H
#include <QMainWindow>
class QAction;
class QListWidget;
class QListWidgetItem;
class MainWindow : public QMainWindow
{
    Q_OBJECT
public:
    MainWindow();
public slots:
    void insertItem();
    void removeItem();
    void sortAscending();
    void sortDescending();
    void updateMenus(QListWidgetItem *current);
private:
    void setupListItems();
    QAction *insertAction;
    QAction *removeAction;
    QListWidget *listWidget;
};
#endif



#include <QtGui>
#include "mainwindow.h"
MainWindow::MainWindow()
{
    QMenu *fileMenu = new QMenu(tr("&File"));
    QAction *quitAction = fileMenu->addAction(tr("E&xit"));
    quitAction->setShortcut(tr("Ctrl+Q"));
    QMenu *itemsMenu = new QMenu(tr("&Items"));
    insertAction = itemsMenu->addAction(tr("&Insert Item"));
    removeAction = itemsMenu->addAction(tr("&Remove Item"));
    QAction *ascendingAction = itemsMenu->addAction(tr("Sort in &Ascending Order"));
    QAction *descendingAction = itemsMenu->addAction(tr("Sort in &Descending Order"));
    menuBar()->addMenu(fileMenu);
    menuBar()->addMenu(itemsMenu);
/*  For convenient quoting:
    QListWidget *listWidget = new QListWidget(this);
*/
    listWidget = new QListWidget(this);
    listWidget->setSelectionMode(QAbstractItemView::SingleSelection);
    connect(quitAction, SIGNAL(triggered()), this, SLOT(close()));
    connect(ascendingAction, SIGNAL(triggered()), this, SLOT(sortAscending()));
    connect(descendingAction, SIGNAL(triggered()), this, SLOT(sortDescending()));
    connect(insertAction, SIGNAL(triggered()), this, SLOT(insertItem()));
    connect(removeAction, SIGNAL(triggered()), this, SLOT(removeItem()));
    connect(listWidget,
            SIGNAL(currentItemChanged(QListWidgetItem *, QListWidgetItem *)),
            this, SLOT(updateMenus(QListWidgetItem *)));
    setupListItems();
    updateMenus(listWidget->currentItem());
    setCentralWidget(listWidget);
    setWindowTitle(tr("List Widget"));
}
void MainWindow::setupListItems()
{
    new QListWidgetItem(tr("Oak"), listWidget);
    new QListWidgetItem(tr("Fir"), listWidget);
    new QListWidgetItem(tr("Pine"), listWidget);
    new QListWidgetItem(tr("Birch"), listWidget);
    new QListWidgetItem(tr("Hazel"), listWidget);
    new QListWidgetItem(tr("Redwood"), listWidget);
    new QListWidgetItem(tr("Sycamore"), listWidget);
    new QListWidgetItem(tr("Chestnut"), listWidget);
    new QListWidgetItem(tr("Mahogany"), listWidget);
}
void MainWindow::sortAscending()
{
    listWidget->sortItems(Qt::AscendingOrder);
}
void MainWindow::sortDescending()
{
    listWidget->sortItems(Qt::DescendingOrder);
}
void MainWindow::insertItem()
{
    if (!listWidget->currentItem())
        return;
    QString itemText = QInputDialog::getText(this, tr("Insert Item"),
        tr("Input text for the new item:"));
    if (itemText.isNull())
        return;

    QListWidgetItem *newItem = new QListWidgetItem;
    newItem->setText(itemText);
    int row = listWidget->row(listWidget->currentItem());
    listWidget->insertItem(row, newItem);

    QString toolTipText = tr("Tooltip:") + itemText;
    QString statusTipText = tr("Status tip:") + itemText;
    QString whatsThisText = tr("What"s This?:") + itemText;
    newItem->setToolTip(toolTipText);
    newItem->setStatusTip(toolTipText);
    newItem->setWhatsThis(whatsThisText);
}
void MainWindow::removeItem()
{
    listWidget->takeItem(listWidget->row(listWidget->currentItem()));
}
void MainWindow::updateMenus(QListWidgetItem *current)
{
    insertAction->setEnabled(current != 0);
    removeAction->setEnabled(current != 0);
}



#include <QtGui>
#include "mainwindow.h"
int main(int argc, char *argv[])
{
    QApplication app(argc, argv);
    MainWindow *window = new MainWindow;
    window->show();
    return app.exec();
}