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diff --git a/src/base/Controllable.h b/src/base/Controllable.h
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+// -*- c-basic-offset: 4 -*-
+
+/*
+    Rosegarden
+    A sequencer and musical notation editor.
+
+    This program is Copyright 2000-2008
+        Guillaume Laurent   <glaurent@telegraph-road.org>,
+        Chris Cannam        <cannam@all-day-breakfast.com>,
+        Richard Bown        <bownie@bownie.com>
+
+    The moral right of the authors to claim authorship of this work
+    has been asserted.
+
+    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 _CONTROLLABLE_DEVICE_H_
+#define _CONTROLLABLE_DEVICE_H_
+
+#include "ControlParameter.h"
+
+namespace Rosegarden
+{
+
+typedef std::vector<ControlParameter> ControlList;
+
+class Controllable
+{
+public:
+    virtual ~Controllable() {}
+    
+    virtual const ControlList &getControlParameters() const = 0;
+    virtual const ControlParameter *getControlParameter(int index) const = 0;
+    virtual const ControlParameter *getControlParameter(const std::string &type,
+                                                        MidiByte controllerNumber) const = 0;
+
+protected:
+    Controllable() { }
+};
+
+}
+
+#endif