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diff --git a/NxWidgets/libnxwidgets/include/cwindoweventhandler.hxx b/NxWidgets/libnxwidgets/include/cwindoweventhandler.hxx
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+++ b/NxWidgets/libnxwidgets/include/cwindoweventhandler.hxx
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+/****************************************************************************
+ * NxWidgets/libnxwidgets/include/cwindoweventhandler.hxx
+ *
+ *   Copyright (C) 2012 Gregory Nutt. All rights reserved.
+ *   Author: Gregory Nutt <gnutt@nuttx.org>
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ * 3. Neither the name NuttX, NxWidgets, nor the names of its contributors
+ *    me be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+ * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *
+ ****************************************************************************/
+
+#ifndef __INCLUDE_CWINDOWEVENTHANDLER_HXX
+#define __INCLUDE_CWINDOWEVENTHANDLER_HXX
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include "nxconfig.hxx"
+ 
+/****************************************************************************
+ * Pre-Processor Definitions
+ ****************************************************************************/
+ 
+/****************************************************************************
+ * Implementation Classes
+ ****************************************************************************/
+ 
+#if defined(__cplusplus)
+
+namespace NXWidgets
+{
+  class CNxWidget;
+
+  /**
+   * Base CWindowEventHandler class, intended to be subclassed.  Any class that
+   * needs to listen for window events should inherit from this class.
+   */
+
+  class CWindowEventHandler
+  {
+  public:
+    /**
+     * Constructor.
+     */
+
+    inline CWindowEventHandler() { }
+    
+    /**
+     * Destructor.
+     */
+
+    virtual inline ~CWindowEventHandler() { }
+    
+    /**
+     * Handle a NX window redraw request event
+     */
+
+    virtual void handleRedrawEvent(void) { }
+
+    /**
+     * Handle a NX window position/size change event
+     */
+ 
+    virtual void handleGeometryEvent(void) { }
+
+    /**
+     * Handle an NX window mouse input event.
+     *
+     * @param e The event data.
+     */
+
+#ifdef CONFIG_NX_MOUSE
+    virtual void handleMouseEvent(void) { }
+#endif
+
+    /**
+     * Handle a NX window keyboard input event.
+     */
+
+#ifdef CONFIG_NX_KBD
+    virtual void handleKeyboardEvent(void) { }
+#endif
+  };
+}
+
+#endif // __cplusplus
+
+#endif // __INCLUDE_CWINDOWEVENTHANDLER_HXX