/****************************************************************************

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

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** This file contains pre-release code and may not be distributed.

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** contained in the Technology Preview License Agreement accompanying

** this package.

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#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"));

}

//! [0]

void MainWindow::mousePressEvent(QMouseEvent *event)

{

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

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

//! [1]

        QDrag *drag = new QDrag(this);

        QMimeData *mimeData = new QMimeData;

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

        drag->setMimeData(mimeData);

//! [1]

        drag->setPixmap(iconPixmap);

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

//! [0]

        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);

//! [2]

    }

}

//! [2]