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diff --git a/kabc/timezone.h b/kabc/timezone.h
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+++ b/kabc/timezone.h
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+/*
+    This file is part of libkabc.
+    Copyright (c) 2001 Cornelius Schumacher <schumacher@kde.org>
+
+    This library is free software; you can redistribute it and/or
+    modify it under the terms of the GNU Library General Public
+    License as published by the Free Software Foundation; either
+    version 2 of the License, or (at your option) any later version.
+
+    This library is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+    Library General Public License for more details.
+
+    You should have received a copy of the GNU Library General Public License
+    along with this library; see the file COPYING.LIB.  If not, write to
+    the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+    Boston, MA 02111-1307, USA.
+*/
+
+/*
+Enhanced Version of the file for platform independent KDE tools.
+Copyright (c) 2004 Ulf Schenk
+
+$Id$
+*/
+
+#ifndef KABC_TIMEZONE_H
+#define KABC_TIMEZONE_H
+
+#include <qstring.h>
+
+namespace KABC {
+
+/**
+ * @short Time zone information.
+ * 
+ * This class stores information about a time zone.
+ */
+class TimeZone
+{
+  friend QDataStream &operator<<( QDataStream &, const TimeZone & );
+  friend QDataStream &operator>>( QDataStream &, TimeZone & );
+
+public:
+
+  /**
+   * Construct invalid time zone.
+   */
+  TimeZone();
+
+  /**
+   * Construct time zone.
+   * 
+   * @param offset Offset in minutes relative to UTC.
+   */
+  TimeZone( int offset );
+    
+  /**
+   * Set time zone offset relative to UTC.
+   *   
+   * @param offset Offset in minutes.
+   */
+  void setOffset( int );
+
+  /**
+   * Return offset in minutes relative to UTC.
+   */
+  int offset() const;
+
+  /**
+   * Return, if this time zone object is valid.
+   */
+  bool isValid() const;
+    
+  bool operator==( const TimeZone & ) const;
+  bool operator!=( const TimeZone & ) const;
+    
+  /**
+   * Return string representation of time zone offset.
+   */
+  QString asString() const;
+    
+private:
+  int mOffset;  // Offset in minutes
+
+  bool mValid;
+};
+
+QDataStream &operator<<( QDataStream &, const TimeZone & );
+QDataStream &operator>>( QDataStream &, TimeZone & );
+
+}
+#endif