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diff --git a/libkcal/exceptions.h b/libkcal/exceptions.h
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+/*
+    This file is part of libkcal.
+    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.
+*/
+
+#ifndef KCAL_EXCEPTIONS_H
+#define KCAL_EXCEPTIONS_H
+//
+// Exception classes of libkcal.
+//
+// We don't use actual C++ exceptions right now. These classes are currently
+// returned by an error function, but we can build upon them, when we start
+// to use C++ exceptions.
+
+#include <qstring.h>
+
+namespace KCal {
+
+/**
+  KOrganizer exceptions base class. This is currently used as a fancy kind of error code not as an
+  C++ exception.
+*/
+class Exception {
+  public:
+    /** Construct exception with descriptive message \a message. */
+    Exception(const QString &message=QString::null);
+    virtual ~Exception();
+
+    /** Return descriptive message of exception. */    
+    virtual QString message();
+    
+  protected:
+    QString mMessage;
+};
+
+/** Calendar format related error class */
+class ErrorFormat : public Exception {
+  public:
+    enum ErrorCodeFormat { LoadError, SaveError,
+                           ParseErrorIcal, ParseErrorKcal,
+                           NoCalendar,
+                           CalVersion1,CalVersion2,
+                           CalVersionUnknown,
+                           Restriction };
+  
+    /** Create format error exception. */
+    ErrorFormat(ErrorCodeFormat code,const QString &message = QString::null);
+    
+    /** Return format error message. */
+    QString message();
+    /** Return format error code. */
+    ErrorCodeFormat errorCode();
+    
+  private:
+    ErrorCodeFormat mCode;
+};
+
+}
+
+#endif