Mega Code Archive
Drag and drop text
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/****************************************************************************
**
** 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.
** $QT_END_LICENSE$
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****************************************************************************/
#ifndef MAINWINDOW_H
#define MAINWINDOW_H
#include <QMainWindow>
#include <QPixmap>
#include <QPoint>
class QLabel;
class QLineEdit;
class QMouseEvent;
class QTextEdit;
class MainWindow : public QMainWindow
{
Q_OBJECT
public:
MainWindow(QWidget *parent = 0);
protected:
void mousePressEvent(QMouseEvent *event);
private:
QLabel *iconLabel;
QLineEdit *nameEdit;
QPixmap iconPixmap;
QPoint dragStartPosition;
QTextEdit *commentEdit;
};
#endif
#include <QtGui>
#include "mainwindow.h"
MainWindow::MainWindow(QWidget *parent)
: QMainWindow(parent)
{
QFrame *centralFrame = new QFrame(this);
QLabel *nameLabel = new QLabel(tr("Comment:"), centralFrame);
commentEdit = new QTextEdit(centralFrame);
QLabel *dragLabel = new QLabel(tr("<p>Drag the icon to a filer "
"window or the desktop background:</p>"),
centralFrame);
iconLabel = new QLabel(centralFrame);
iconPixmap.load(":/images/file.png");
iconLabel->setPixmap(iconPixmap);
QGridLayout *grid = new QGridLayout(centralFrame);
grid->addWidget(nameLabel, 0, 0);
grid->addWidget(commentEdit, 1, 0, 1, 2);
grid->addWidget(dragLabel, 2, 0);
grid->addWidget(iconLabel, 2, 1);
statusBar();
setCentralWidget(centralFrame);
setWindowTitle(tr("Dragging"));
}
void MainWindow::mousePressEvent(QMouseEvent *event)
{
if (event->button() == Qt::LeftButton
&& iconLabel->geometry().contains(event->pos())) {
QDrag *drag = new QDrag(this);
QMimeData *mimeData = new QMimeData;
mimeData->setText(commentEdit->toPlainText());
drag->setMimeData(mimeData);
drag->setPixmap(iconPixmap);
Qt::DropAction dropAction = drag->exec();
QString actionText;
switch (dropAction) {
case Qt::CopyAction:
actionText = tr("The text was copied.");
break;
case Qt::MoveAction:
actionText = tr("The text was moved.");
break;
case Qt::LinkAction:
actionText = tr("The text was linked.");
break;
case Qt::IgnoreAction:
actionText = tr("The drag was ignored.");
break;
default:
actionText = tr("Unknown action.");
break;
}
statusBar()->showMessage(actionText);
}
}
#include <QtGui>
#include "mainwindow.h"
int main(int argc, char *argv[])
{
QApplication app(argc, argv);
MainWindow *window = new MainWindow;
window->show();
return app.exec();
}
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