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diff --git a/src/commands/matrix/MatrixPercussionInsertionCommand.h b/src/commands/matrix/MatrixPercussionInsertionCommand.h
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+
+/* -*- c-basic-offset: 4 indent-tabs-mode: nil -*- vi:set ts=8 sts=4 sw=4: */
+
+/*
+    Rosegarden
+    A MIDI and audio sequencer and musical notation editor.
+
+    This program is Copyright 2000-2008
+        Guillaume Laurent   <[email protected]>,
+        Chris Cannam        <[email protected]>,
+        Richard Bown        <[email protected]>
+
+    The moral rights of Guillaume Laurent, Chris Cannam, and Richard
+    Bown to claim authorship of this work have been asserted.
+
+    Other copyrights also apply to some parts of this work.  Please
+    see the AUTHORS file and individual file headers for details.
+
+    This program is free software; you can redistribute it and/or
+    modify it under the terms of the GNU General Public License as
+    published by the Free Software Foundation; either version 2 of the
+    License, or (at your option) any later version.  See the file
+    COPYING included with this distribution for more information.
+*/
+
+#ifndef _RG_MATRIXPERCUSSIONINSERTIONCOMMAND_H_
+#define _RG_MATRIXPERCUSSIONINSERTIONCOMMAND_H_
+
+#include "document/BasicCommand.h"
+#include "base/Event.h"
+
+
+
+
+namespace Rosegarden
+{
+
+class Segment;
+class Event;
+
+
+class MatrixPercussionInsertionCommand : public BasicCommand
+{
+public:
+    MatrixPercussionInsertionCommand(Segment &segment,
+                                     timeT time,
+                                     Event *event);
+
+    virtual ~MatrixPercussionInsertionCommand();
+
+    Event *getLastInsertedEvent() { return m_lastInsertedEvent; }
+    
+protected:
+    virtual void modifySegment();
+
+    timeT getEffectiveStartTime(Segment &segment,
+                                            timeT startTime,
+                                            Event &event);
+    timeT getEndTime(Segment &segment,
+                                 timeT endTime,
+                                 Event &event);
+
+    Event *m_event;
+    timeT m_time;
+    Event *m_lastInsertedEvent; // an alias for another event
+};
+
+//------------------------------
+
+
+}
+
+#endif