Implement storage for palette border, background and content for input control common state.
Inheritance: Storage, IPaletteTriple, IPaletteMetric
        /// <summary>
        /// Initialize a new instance of the PaletteComboBoxRedirect class.
        /// </summary>
        /// <param name="redirect">Inheritence redirection instance.</param>
        /// <param name="needPaint">Delegate for notifying paint requests.</param>
        public PaletteComboBoxRedirect(PaletteRedirect redirect,
                                       NeedPaintHandler needPaint)
        {
            Debug.Assert(redirect != null);

            // Store the provided paint notification delegate
            NeedPaint = needPaint;

            // Create storage that maps onto the inherit instances
            _itemRedirect = new PaletteTripleRedirect(redirect,
                                                      PaletteBackStyle.ButtonListItem,
                                                      PaletteBorderStyle.ButtonListItem,
                                                      PaletteContentStyle.ButtonListItem,
                                                      NeedPaint);

            _comboBoxRedirect = new PaletteInputControlTripleRedirect(redirect,
                                                                      PaletteBackStyle.InputControlStandalone,
                                                                      PaletteBorderStyle.InputControlStandalone,
                                                                      PaletteContentStyle.InputControlStandalone,
                                                                      NeedPaint);

            _dropBackRedirect = new PaletteDoubleRedirect(redirect,
                                                          PaletteBackStyle.ControlClient,
                                                          PaletteBorderStyle.ButtonStandalone,
                                                          NeedPaint);
        }
        /// <summary>
        /// Initialize a new instance of the PaletteComboBoxRedirect class.
        /// </summary>
        /// <param name="redirect">Inheritence redirection instance.</param>
        /// <param name="needPaint">Delegate for notifying paint requests.</param>
        public PaletteComboBoxRedirect(PaletteRedirect redirect,
                                       NeedPaintHandler needPaint)
        {
            Debug.Assert(redirect != null);

            // Store the provided paint notification delegate
            NeedPaint = needPaint;

            // Create storage that maps onto the inherit instances
            Item = new PaletteTripleRedirect(redirect,
                                             PaletteBackStyle.ButtonListItem,
                                             PaletteBorderStyle.ButtonListItem,
                                             PaletteContentStyle.ButtonListItem,
                                             NeedPaint);

            ComboBox = new PaletteInputControlTripleRedirect(redirect,
                                                             PaletteBackStyle.InputControlStandalone,
                                                             PaletteBorderStyle.InputControlStandalone,
                                                             PaletteContentStyle.InputControlStandalone,
                                                             NeedPaint);
            // Set directly to prevent a Paint redirect
            ComboBox.Content._shortTextH = PaletteRelativeAlign.Near;

            _dropBackRedirect = new PaletteDoubleRedirect(redirect,
                                                          PaletteBackStyle.ControlClient,
                                                          PaletteBorderStyle.ButtonStandalone,
                                                          NeedPaint);
        }
        /// <summary>
        /// Initialize a new instance of the PaletteComboBoxRedirect class.
        /// </summary>
        /// <param name="redirect">Inheritence redirection instance.</param>
        /// <param name="needPaint">Delegate for notifying paint requests.</param>
        public PaletteComboBoxRedirect(PaletteRedirect redirect,
                                       NeedPaintHandler needPaint)
        {
            Debug.Assert(redirect != null);

            // Store the provided paint notification delegate
            NeedPaint = needPaint;

            // Create storage that maps onto the inherit instances
            _itemRedirect = new PaletteTripleRedirect(redirect,
                                                      PaletteBackStyle.ButtonListItem,
                                                      PaletteBorderStyle.ButtonListItem,
                                                      PaletteContentStyle.ButtonListItem,
                                                      NeedPaint);

            _comboBoxRedirect = new PaletteInputControlTripleRedirect(redirect,
                                                                      PaletteBackStyle.InputControlStandalone,
                                                                      PaletteBorderStyle.InputControlStandalone,
                                                                      PaletteContentStyle.InputControlStandalone,
                                                                      NeedPaint);

            _dropBackRedirect = new PaletteDoubleRedirect(redirect,
                                                          PaletteBackStyle.ControlClient,
                                                          PaletteBorderStyle.ButtonStandalone,
                                                          NeedPaint);
        }