/******************************************************************************** Copyright (C) 1992-2006 Trolltech ASA. All rights reserved.**** This file is part of the QtSql module 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.******************************************************************************/#include "qglobal.h"/*!    \class QSqlRelationalDelegate    \brief The QSqlRelationalDelegate class provides a delegate that is used to    display and edit data from a QSqlRelationalTableModel.    Unlike the default delegate, QSqlRelationalDelegate provides a    combobox for fields that are foreign keys into other tables. To    use the class, simply call QAbstractItemView::setItemDelegate()    on the view with an instance of QSqlRelationalDelegate:    \quotefromfile sql/relationaltablemodel/relationaltablemodel.cpp    \skipto QTableView *view = new    \printuntil setItemDelegate    The \l{sql/relationaltablemodel}{Relational Table Model} example    (shown below) illustrates how to use QSqlRelationalDelegate in    conjunction with QSqlRelationalTableModel to provide tables with    foreign key support.    \image relationaltable.png    \sa QSqlRelationalTableModel, {Model/View Programming}*//*!    \fn QSqlRelationalDelegate::QSqlRelationalDelegate(QObject *parent)    Constructs a QSqlRelationalDelegate object with the given \a    parent.*//*!    \fn QSqlRelationalDelegate::~QSqlRelationalDelegate()    Destroys the QSqlRelationalDelegate object and frees any    allocated resources.*//*!    \fn QWidget *QSqlRelationalDelegate::createEditor(QWidget *parent,                                                      const QStyleOptionViewItem &option,                                                      const QModelIndex &index) const    \reimp*//*!    \fn void QSqlRelationalDelegate::setEditorData(QWidget *editor, const QModelIndex &index) const    \reimp*//*!    \fn void QSqlRelationalDelegate::setModelData(QWidget *editor, QAbstractItemModel *model,                                                  const QModelIndex &index) const    \reimp*/