Qt 4.2: droparea.h Example File (draganddrop/dropsite/droparea.h)

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# droparea.h Example File
draganddrop/dropsite/droparea.h

     /****************************************************************************
     **
     ** Copyright (C) 2005-2006 Trolltech ASA. All rights reserved.
     **
     ** This file is part of the example classes of the Qt Toolkit.
     **
     ** This file may be used under the terms of the GNU General Public
     ** License version 2.0 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 GNU
     ** General Public Licensing requirements will be met:
     ** http://www.trolltech.com/products/qt/opensource.html
     **
     ** If you are unsure which license is appropriate for your use, please
     ** review the following information:
     ** http://www.trolltech.com/products/qt/licensing.html or contact the
     ** sales department at sales@trolltech.com.
     **
     ** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
     ** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
     **
     ****************************************************************************/

     #ifndef DROPAREA_H
     #define DROPAREA_H

     #include <QLabel>

     class QMimeData;

     class DropArea : public QLabel
     {
         Q_OBJECT

     public:
         DropArea(QWidget *parent = 0);

         QPixmap extractPixmap(const QByteArray &data, const QString &format);

     public slots:
         void clear();

     signals:
         void changed(const QMimeData *mimeData = 0);

     protected:
         void dragEnterEvent(QDragEnterEvent *event);
         void dragMoveEvent(QDragMoveEvent *event);
         void dragLeaveEvent(QDragLeaveEvent *event);
         void dropEvent(QDropEvent *event);

     private:
         QLabel *label;
     };

     #endif