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diff --git a/NxWidgets/libnxwidgets/src/cbgwindow.cxx b/NxWidgets/libnxwidgets/src/cbgwindow.cxx
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+/****************************************************************************
+ * NxWidgets/libnxwidgets/src/cbgwindow.cxx
+ *
+ *   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.
+ *
+ ****************************************************************************/
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+ 
+#include <nuttx/config.h>
+
+#include <stdint.h>
+#include <stdbool.h>
+
+#include "cwidgetcontrol.hxx"
+#include "cbgwindow.hxx"
+#include "cbitmap.hxx"
+
+/****************************************************************************
+ * Pre-Processor Definitions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Method Implementations
+ ****************************************************************************/
+
+using namespace NXWidgets;
+
+/**
+ * Constructor.  Obtains the background window from server and wraps
+ * the window as CBgWindow.
+ *
+ * @param hNxServer Handle to the NX server.
+ * @param widgetControl Controlling widget for this window.
+ */
+  
+CBgWindow::CBgWindow(NXHANDLE hNxServer, CWidgetControl *pWidgetControl)
+  : CCallback(pWidgetControl), m_hNxServer(hNxServer), m_hWindow(0),
+    m_widgetControl(pWidgetControl)
+{
+  // Create the CGraphicsPort instance for this window
+
+  m_widgetControl->createGraphicsPort(static_cast<INxWindow*>(this));
+}
+
+/**
+ * Destructor.  Returns the background window to the server.
+ */
+     
+CBgWindow::~CBgWindow(void)
+{
+  // Release the background.  We do not release the widget control
+  // instance.  The lifetime of that instance is owned by he-who-
+  // constructed-us.
+
+  (void)nx_releasebkgd(m_hWindow);
+}
+
+/**
+ * Creates a new window.  Window creation is separate from
+ * object instantiation so that failures can be reported.
+ *
+ * @return True if the window was successfully opened.
+ */
+
+bool CBgWindow::open(void)
+{
+  // Get the C-callable callback vtable
+
+  FAR struct nx_callback_s *vtable = getCallbackVTable();
+
+  // Request the background the window
+
+  int ret = nx_requestbkgd(m_hNxServer, vtable, (FAR void *)m_widgetControl);
+  if (ret < 0)
+    {
+      return false;
+    }
+
+  // Window handle (picked off by the callback logic)
+
+  m_hWindow = m_widgetControl->getWindowHandle();
+  return true;
+}
+
+/**
+ * Request the position and size information of the window. The values
+ * will be returned asynchronously through the client callback method.
+ * The GetPosition() method may than be called to obtain the positional
+ * data as provided by the callback.
+ *
+ * @return Always returns true.
+ */
+     
+bool CBgWindow::requestPosition(void)
+{
+  // The background window is always at {0,0} and the size never changes.
+
+  return true;
+}
+
+/**
+ * Get the position of the window (as reported by the NX callback). NOTE:
+ * The background window is always positioned at {0,0}
+ *
+ * @return The position.
+ */
+
+bool CBgWindow::getPosition(FAR struct nxgl_point_s *pPos)
+{
+  // The background window is always at {0,0}
+
+  pPos->x = 0;
+  pPos->y = 0;
+  return true;
+}
+
+/**
+ * Get the size of the window (as reported by the NX callback).  NOTE:
+ * The size of the background window is always the entire display.
+ *
+ * @return The size.
+ */
+
+bool CBgWindow::getSize(FAR struct nxgl_size_s *pSize)
+{
+  // The size is always the full size of the display
+
+  return m_widgetControl->getWindowSize(pSize);
+}
+
+/**
+ * Set the position and size of the window.
+ *
+ * @param pPos The new position of the window.
+ * @return Always returns false.
+ */
+     
+bool CBgWindow::setPosition(FAR const struct nxgl_point_s *pPos)
+{
+  // The position of the background cannot be changed
+
+  return false;
+}
+
+/**
+ * Set the size of the selected window.  NOTE:  The size of the
+ * background window is always the entire display and cannot be
+ * changed.
+ *
+ * @param pSize The new size of the window.
+ * @return Always returns false.
+ */
+    
+bool CBgWindow::setSize(FAR const struct nxgl_size_s *pSize)
+{
+  // The position of the background cannot be changed
+
+  return false;
+}
+
+/**
+ * Bring the window to the top of the display.  NOTE:  The background
+ * window cannot be raised.
+ *
+ * @return Always returns false.
+ */
+
+bool CBgWindow::raise(void)
+{
+  // The background cannot be raised
+
+  return false;
+}
+
+/**
+ * Lower the window to the bottom of the display.  NOTE:  The background
+ * window is always at the bottom of the window hierarchy.
+ *
+ * @return Always returns false.
+ */
+
+bool CBgWindow::lower(void)
+{
+  // The background cannot be lowered
+
+  return false;
+}
+
+/**
+ * Set an individual pixel in the window with the specified color.
+ *
+ * @param pPos The location of the pixel to be filled.
+ * @param color The color to use in the fill.
+ *
+ * @return True on success; false on failure.
+ */
+
+bool CBgWindow::setPixel(FAR const struct nxgl_point_s *pPos,
+                         nxgl_mxpixel_t color)
+{
+  // Set an individual pixel to the specified color
+
+  return nx_setpixel(m_hWindow, pPos, &color) == OK;
+}
+
+/**
+ * Fill the specified rectangle in the window with the specified color.
+ *
+ * @param pRect The location to be filled.
+ * @param color The color to use in the fill.
+ *
+ * @return True on success; false on failure.
+ */
+
+bool CBgWindow::fill(FAR const struct nxgl_rect_s *pRect,
+                     nxgl_mxpixel_t color)
+{
+  // Fill a rectangular region with a solid color
+
+  return nx_fill(m_hWindow, pRect, &color) == OK;
+}
+
+/**
+ * Get the raw contents of graphic memory within a rectangular region. NOTE:
+ * Since raw graphic memory is returned, the returned memory content may be
+ * the memory of windows above this one and may not necessarily belong to
+ * this window unless you assure that this is the top window.
+ *
+ * @param rect The location to be copied
+ * @param dest - The describes the destination bitmap to receive the
+ *   graphics data.
+ */
+
+void CBgWindow::getRectangle(FAR const struct nxgl_rect_s *rect, struct SBitmap *dest)
+{
+  // Get a rectangule region from the window
+
+  (void)nx_getrectangle(m_hWindow, rect, 0, (FAR uint8_t*)dest->data, dest->stride);
+}
+
+/**
+ * Fill the specified trapezoidal region in the window with the specified
+ * color.
+ *
+ * @param pClip Clipping rectangle relative to window (may be null).
+ * @param pTrap The trapezoidal region to be filled.
+ * @param color The color to use in the fill.
+ *
+ * @return True on success; false on failure.
+ */
+
+bool CBgWindow::fillTrapezoid(FAR const struct nxgl_rect_s *pClip,
+                              FAR const struct nxgl_trapezoid_s *pTrap,
+                              nxgl_mxpixel_t color)
+{
+  // Fill a trapezoidal region with a solid color
+
+  return nx_filltrapezoid(m_hWindow, pClip, pTrap, &color) == OK;
+}
+
+/**
+ * Fill the specified line in the window with the specified color.
+ *
+ * @param vector - Describes the line to be drawn
+ * @param width  - The width of the line
+ * @param color  - The color to use to fill the line
+ *
+ * @return True on success; false on failure.
+ */
+
+bool CBgWindow::drawLine(FAR struct nxgl_vector_s *vector,
+                         nxgl_coord_t width, nxgl_mxpixel_t color)
+{
+  // Draw a line with the specified color
+
+  return nx_drawline(m_hWindow, vector, width, &color) == OK;
+}
+
+/**
+ * Draw a filled circle at the specified position, size, and color.
+ *
+ * @param center The window-relative coordinates of the circle center.
+ * @param radius The radius of the rectangle in pixels.
+ * @param color The color of the rectangle.
+ */
+
+bool CBgWindow::drawFilledCircle(struct nxgl_point_s *center, nxgl_coord_t radius,
+                                 nxgl_mxpixel_t color)
+{
+  return nx_fillcircle(m_hWindow, center, radius, &color) == OK;
+}
+
+/**
+ * Move a rectangular region within the window.
+ *
+ * @param pRect Describes the rectangular region to move.
+ * @param pOffset The offset to move the region.
+ *
+ * @return True on success; false on failure.
+ */
+
+bool CBgWindow::move(FAR const struct nxgl_rect_s *pRect,
+                     FAR const struct nxgl_point_s *pOffset)
+{
+  // Move a rectangular region of the display
+
+  return nx_move(m_hWindow, pRect, pOffset) == OK;
+}
+
+/**
+ * Copy a rectangular region of a larger image into the rectangle in the
+ * specified window.  The source image is treated as an opaque image.
+ *
+ * @param pDest Describes the rectangular on the display that will receive
+ * the bitmap.
+ * @param pSrc The start of the source image.
+ * @param pOrigin the pOrigin of the upper, left-most corner of the full
+ * bitmap. Both pDest and pOrigin are in window coordinates, however,
+ * pOrigin may lie outside of the display.
+ * @param stride The width of the full source image in bytes.
+ *
+ * @return True on success; false on failure.
+ */
+
+bool CBgWindow::bitmap(FAR const struct nxgl_rect_s *pDest,
+                       FAR const void *pSrc,
+                       FAR const struct nxgl_point_s *pOrigin,
+                       unsigned int stride)
+{
+  // Copy a rectangular bitmap image in a region on the display
+
+  return nx_bitmap(m_hWindow, pDest, &pSrc, pOrigin, stride) == OK;
+}