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--- a/include/QxModelView/QxModelRowCompare.h
+++ b/include/QxModelView/QxModelRowCompare.h
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+/****************************************************************************
+**
+** https://www.qxorm.com/
+** Copyright (C) 2013 XDL Team (ic-east.com)
+**
+** This file is part of the QxOrm library
+**
+** This software is provided 'as-is', without any express or implied
+** warranty. In no event will the authors be held liable for any
+** damages arising from the use of this software
+**
+** Commercial Usage
+** Licensees holding valid commercial QxOrm licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and XDL Team
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3.0 as published by the Free Software
+** Foundation and appearing in the file 'license.gpl3.txt' included in the
+** packaging of this file. Please review the following information to
+** ensure the GNU General Public License version 3.0 requirements will be
+** met : http://www.gnu.org/copyleft/gpl.html
+**
+** If you are unsure which license is appropriate for your use, or
+** if you have questions regarding the use of this file, please contact :
+** ic-east.com
+**
+****************************************************************************/
+
+#ifndef _QX_MODEL_ROW_COMPARE_H_
+#define _QX_MODEL_ROW_COMPARE_H_
+
+#ifdef _MSC_VER
+#pragma once
+#endif
+
+/*!
+ * \file QxModelRowCompare.h
+ * \author XDL Team
+ * \ingroup QxModelView
+ * \brief Functor used to provide sort feature for all models based on qx::IxModel interface (please note that you can also use QSortFilterProxyModel Qt class to sort your model)
+ */
+
+#include <QxDataMember/IxDataMember.h>
+
+namespace qx
+{
+   namespace model_view
+   {
+
+      QX_DLL_EXPORT bool compareQVariant(const QVariant &v1, const QVariant &v2, bool bAscending) QX_USED;
+
+      /*!
+       * \ingroup QxModelView
+       * \brief qx::QxModelRowCompare : functor used to provide sort feature for all models based on qx::IxModel interface (please note that you can also use QSortFilterProxyModel Qt class to sort your model)
+       */
+      template <typename T>
+      struct QxModelRowCompare
+      {
+
+         bool m_bAscendingOrder;          //!< Sort your model using ascending or descending order
+         qx::IxDataMember *m_pDataMember; //!< Data member associated to the model column to sort
+
+         QxModelRowCompare(bool bAscendingOrder, qx::IxDataMember *pDataMember) : m_bAscendingOrder(bAscendingOrder), m_pDataMember(pDataMember) { qAssert(m_pDataMember != NULL); }
+
+         bool operator()(const T &t1, const T &t2) const
+         {
+            if (!m_pDataMember || !t1.second || !t2.second)
+            {
+               return false;
+            }
+            QVariant v1 = m_pDataMember->toVariant(&(*t1.second));
+            QVariant v2 = m_pDataMember->toVariant(&(*t2.second));
+            return qx::model_view::compareQVariant(v1, v2, m_bAscendingOrder);
+         }
+      };
+
+   } // namespace model_view
+} // namespace qx
+
+#endif // _QX_MODEL_ROW_COMPARE_H_