variantdelegate.h Example File

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

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

  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