variantdelegate.h Example File
^{tools/settingseditor/variantdelegate.h}

    /****************************************************************************
    **
    ** Copyright (C) 2005-2006 Trolltech ASA. All rights reserved.
    **
    ** This file is part of the documentation 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 VARIANTDELEGATE_H
    #define VARIANTDELEGATE_H

    #include <QItemDelegate>
    #include <QRegExp>

    class VariantDelegate : public QItemDelegate
    {
        Q_OBJECT

    public:
        VariantDelegate(QObject *parent = 0);

        void paint(QPainter *painter, const QStyleOptionViewItem &option,
                   const QModelIndex &index) const;
        QWidget *createEditor(QWidget *parent, const QStyleOptionViewItem &option,
                              const QModelIndex &index) const;
        void setEditorData(QWidget *editor, const QModelIndex &index) const;
        void setModelData(QWidget *editor, QAbstractItemModel *model,
                          const QModelIndex &index) const;

        static bool isSupportedType(QVariant::Type type);
        static QString displayText(const QVariant &value);

    private slots:
        void commitAndCloseEditor();

    private:
        mutable QRegExp boolExp;
        mutable QRegExp byteArrayExp;
        mutable QRegExp charExp;
        mutable QRegExp colorExp;
        mutable QRegExp dateExp;
        mutable QRegExp dateTimeExp;
        mutable QRegExp doubleExp;
        mutable QRegExp pointExp;
        mutable QRegExp rectExp;
        mutable QRegExp signedIntegerExp;
        mutable QRegExp sizeExp;
        mutable QRegExp timeExp;
        mutable QRegExp unsignedIntegerExp;
    };

    #endif