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     2 **

     3 ** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).

     4 ** All rights reserved.

     5 ** Contact: Nokia Corporation (qt-info@nokia.com)

     6 **

     7 ** This file is part of the documentation of the Qt Toolkit.

     8 **

     9 ** $QT_BEGIN_LICENSE:LGPL$

    10 ** No Commercial Usage

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    12 ** You may use this file in accordance with the terms and conditions

    13 ** contained in the Technology Preview License Agreement accompanying

    14 ** this package.

    15 **

    16 ** GNU Lesser General Public License Usage

    17 ** Alternatively, this file may be used under the terms of the GNU Lesser

    18 ** General Public License version 2.1 as published by the Free Software

    19 ** Foundation and appearing in the file LICENSE.LGPL included in the

    20 ** packaging of this file.  Please review the following information to

    21 ** ensure the GNU Lesser General Public License version 2.1 requirements

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    23 **

    24 ** In addition, as a special exception, Nokia gives you certain additional

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    38 ** $QT_END_LICENSE$

    39 **

    40 ****************************************************************************/

    41 

    42 #include <QtGui>

    43 

    44 #include "mainwindow.h"

    45 

    46 MainWindow::MainWindow(QWidget *parent)

    47     : QMainWindow(parent)

    48 {

    49     QFrame *centralFrame = new QFrame(this);

    50 

    51     QLabel *nameLabel = new QLabel(tr("Comment:"), centralFrame);

    52     commentEdit = new QTextEdit(centralFrame);

    53     QLabel *dragLabel = new QLabel(tr("<p>Drag the icon to a filer "

    54                                       "window or the desktop background:</p>"),

    55                                       centralFrame);

    56     iconLabel = new QLabel(centralFrame);

    57     iconPixmap.load(":/images/file.png");

    58     iconLabel->setPixmap(iconPixmap);

    59 

    60     QGridLayout *grid = new QGridLayout(centralFrame);

    61     grid->addWidget(nameLabel, 0, 0);

    62     grid->addWidget(commentEdit, 1, 0, 1, 2);

    63     grid->addWidget(dragLabel, 2, 0);

    64     grid->addWidget(iconLabel, 2, 1);

    65 

    66     statusBar();

    67     setCentralWidget(centralFrame);

    68     setWindowTitle(tr("Dragging"));

    69 }

    70 

    71 //! [0]

    72 void MainWindow::mousePressEvent(QMouseEvent *event)

    73 {

    74     if (event->button() == Qt::LeftButton

    75         && iconLabel->geometry().contains(event->pos())) {

    76 

    77 //! [1]

    78         QDrag *drag = new QDrag(this);

    79         QMimeData *mimeData = new QMimeData;

    80 

    81         mimeData->setText(commentEdit->toPlainText());

    82         drag->setMimeData(mimeData);

    83 //! [1]

    84         drag->setPixmap(iconPixmap);

    85 

    86         Qt::DropAction dropAction = drag->exec();

    87 //! [0]

    88 

    89         QString actionText;

    90         switch (dropAction) {

    91             case Qt::CopyAction:

    92                 actionText = tr("The text was copied.");

    93                 break;

    94             case Qt::MoveAction:

    95                 actionText = tr("The text was moved.");

    96                 break;

    97             case Qt::LinkAction:

    98                 actionText = tr("The text was linked.");

    99                 break;

   100             case Qt::IgnoreAction:

   101                 actionText = tr("The drag was ignored.");

   102                 break;

   103             default:

   104                 actionText = tr("Unknown action.");

   105                 break;

   106         }

   107         statusBar()->showMessage(actionText);

   108 //! [2]

   109     }

   110 }

   111 //! [2]