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

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    #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