C++/Qt/QListWidget — различия между версиями
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Текущая версия на 13:24, 25 мая 2010
Содержание
Adding one item to QListWidget
<source lang="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 "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();
}
</source>
Get currentRow() from QListWidget
<source lang="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 "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();
}
</source>
Get selected Items count from QListWidget
<source lang="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 "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();
}
</source>
QListWidget drag and drop
<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.
- $QT_END_LICENSE$
-
- /
- 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();
}
</source>
QListWidget: Insert items and remove items
<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.
- $QT_END_LICENSE$
-
- /
- 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();
}
</source>