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+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Qt Software Information (qt-info@nokia.com)
+**
+** This file is part of the documentation of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the either Technology Preview License Agreement or the
+** Beta Release License Agreement.
+**
+** 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 1.0, 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 are unsure which license is appropriate for your use, please
+** contact the sales department at qt-sales@nokia.com.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include <QtGui>
+
+#include "window.h"
+
+MyWidget::MyWidget(QWidget *parent)
+ : QWidget(parent)
+{
+ QLabel *textLabel = new QLabel(tr("Data:"), this);
+ dataLabel = new QLabel(this);
+ dataLabel->setFixedSize(200, 200);
+
+ QVBoxLayout *layout = new QVBoxLayout(this);
+ layout->addWidget(textLabel);
+ layout->addWidget(dataLabel);
+
+ setAcceptDrops(true);
+ setWindowTitle(tr("Drop Events"));
+}
+
+//! [0]
+void MyWidget::dragEnterEvent(QDragEnterEvent *event)
+{
+ if (event->mimeData()->hasText() || event->mimeData()->hasImage())
+ event->acceptProposedAction();
+}
+//! [0]
+
+//! [1]
+void MyWidget::dropEvent(QDropEvent *event)
+{
+ if (event->mimeData()->hasText())
+ dataLabel->setText(event->mimeData()->text());
+ else if (event->mimeData()->hasImage()) {
+ QVariant imageData = event->mimeData()->imageData();
+ dataLabel->setPixmap(qvariant_cast<QPixmap>(imageData));
+ }
+ event->acceptProposedAction();
+}
+//! [1]
+
+//! [2]
+void MyWidget::mousePressEvent(QMouseEvent *event)
+{
+//! [2]
+ QString text = dataLabel->text();
+ QPixmap iconPixmap(32, 32);
+ iconPixmap.fill(qRgba(255, 0, 0, 127));
+ QImage image(100, 100, QImage::Format_RGB32);
+ image.fill(qRgb(0, 0, 255));
+
+//! [3]
+ if (event->button() == Qt::LeftButton) {
+
+ QDrag *drag = new QDrag(this);
+ QMimeData *mimeData = new QMimeData;
+
+ mimeData->setText(text);
+ mimeData->setImageData(image);
+ drag->setMimeData(mimeData);
+ drag->setPixmap(iconPixmap);
+
+ Qt::DropAction dropAction = drag->exec();
+//! [3]
+ // ...
+//! [4]
+ event->accept();
+ }
+//! [4]
+ else if (event->button() == Qt::MidButton) {
+
+ QDrag *drag = new QDrag(this);
+ QMimeData *mimeData = new QMimeData;
+
+ mimeData->setImageData(image);
+ drag->setMimeData(mimeData);
+ drag->setPixmap(iconPixmap);
+
+ Qt::DropAction dropAction = drag->exec();
+ // ...
+ event->accept();
+ }
+//! [5]
+}
+//! [5]