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diff --git a/xbmc/guilib/ISliderCallback.h b/xbmc/guilib/ISliderCallback.h
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+/*
+ *  Copyright (C) 2013-2018 Team Kodi
+ *  This file is part of Kodi - https://kodi.tv
+ *
+ *  SPDX-License-Identifier: GPL-2.0-or-later
+ *  See LICENSES/README.md for more information.
+ */
+
+#pragma once
+
+class CGUISliderControl;
+
+/*!
+ \brief Interface class for callback from the slider dialog
+
+ Used to pass feedback from the slider dialog to a caller.  Users of the
+ slider dialog should derive from this class if they wish to respond to changes
+ in the slider by the user as they happen.  OnSliderChange is called in response
+ to the user moving the slider.  The caller may then update the text on the slider
+ and update anything that should be changed as the slider is adjusted.
+
+ \sa CGUIDialogSlider
+ */
+class ISliderCallback
+{
+public:
+  virtual ~ISliderCallback() = default;
+
+  /*!
+   \brief Callback function called whenever the user moves the slider
+
+   \param data pointer of callbackData
+   \param slider pointer to the slider control
+   */
+  virtual void OnSliderChange(void *data, CGUISliderControl *slider) = 0;
+};