static GUI_COLOR _aColor[11];

/*********************************************************************
*
*       Static code
*
**********************************************************************
*/
/*********************************************************************
*
*       _InitColors
*/
static void _InitColors(GUI_COLOR Color0, GUI_COLOR Color1, GUI_COLOR * pColors, int NumShades) {
  int r0, g0, b0, r1, g1, b1, i;
  r0 = (Color0 >>  0) & 0xff;
  g0 = (Color0 >>  8) & 0xff;
  b0 = (Color0 >> 16) & 0xff;
  r1 = (Color1 >>  0) & 0xff;
  g1 = (Color1 >>  8) & 0xff;
  b1 = (Color1 >> 16) & 0xff;
  for (i = 0; i < NumShades; i++) {
    GUI_COLOR Color;
    int r, g, b;
    r = r0 + ((r1 - r0) * i) / (NumShades - 1);
    g = g0 + ((g1 - g0) * i) / (NumShades - 1);
    b = b0 + ((b1 - b0) * i) / (NumShades - 1);
    Color = r | (g << 8) | (b << 16);
    *(pColors + i) = Color;
  }
}

/*********************************************************************
*
*       _DrawUpRect
*
* Function description
*   Draws an "Up" effect arround a given rectangle.
*   This effect is used in different situations, but typically for an unpressed button
*   which is supposed to "stick out".
*/
static void _DrawUpRect(const GUI_RECT * pRect) {
  int i;
  GUI_CONTEXT Context;
  GUI_SaveContext(&Context);
  /*
   * Draws an 'Up' effect
   */
  for (i = 0; i < 2; i++) {
    LCD_SetColor(_aColor[i]);
    GUI_DrawHLine(pRect->y1 - (0 + i), pRect->x0 + (0 + i), pRect->x1 - (0 + i));
    GUI_DrawVLine(pRect->x1 - (0 + i), pRect->y0 + (0 + i), pRect->y1 - (0 + i));
  }
  for (i = 0; i < 2; i++) {
    LCD_SetColor(_aColor[i + 1]);
    GUI_DrawHLine(pRect->y0 + (0 + i), pRect->x0 + (1 + i), pRect->x1 - (1 + i));
    GUI_DrawVLine(pRect->x0 + (0 + i), pRect->y0 + (0 + i), pRect->y1 - (1 + i));
  }
  GUI_RestoreContext(&Context);
}

/*********************************************************************
*
*       _DrawDownRect
*
* Function description
*   Draws an "Down" effect arround a given rectangle.
*   This effect is used in different situations, but typically for an edit widget
*   which is supposed to "sunken".
*/
static void _DrawDownRect(const GUI_RECT * pRect) {
  int i;
  GUI_CONTEXT Context;
  GUI_SaveContext(&Context);
  /*
   * Draws a 'Down' effect
   */
  for (i = 0; i < 2; i++) {
    LCD_SetColor(_aColor[2 - i]);
    GUI_DrawHLine(pRect->y1 - (0 + i), pRect->x0 + (0 + i), pRect->x1 - (0 + i));
    GUI_DrawVLine(pRect->x1 - (0 + i), pRect->y0 + (0 + i), pRect->y1 - (0 + i));
  }
  for (i = 0; i < 2; i++) {
    LCD_SetColor(_aColor[1 - i]);
    GUI_DrawHLine(pRect->y0 + (0 + i), pRect->x0 + (1 + i), pRect->x1 - (1 + i));
    GUI_DrawVLine(pRect->x0 + (0 + i), pRect->y0 + (0 + i), pRect->y1 - (1 + i));
  }
  GUI_RestoreContext(&Context);
}

/*********************************************************************
*
*       _DrawFlatRect
*
* Function description
*   Draws an "Flat" effect arround a given rectangle.
*   This effect is typically used for a button widget in pressed state
*   which shpuld appear "flat".
*/
static void _DrawFlatRect(const GUI_RECT * pRect) {
  GUI_CONTEXT Context;
  GUI_SaveContext(&Context);
  /*
   * Draws a 'Flat' effect
   */
  LCD_SetColor(_aColor[1]);
  GUI_FillRect(pRect->x0    , pRect->y0    , pRect->x1    , pRect->y0 + 1);
  GUI_FillRect(pRect->x0    , pRect->y1 - 1, pRect->x1    , pRect->y1    );
  GUI_FillRect(pRect->x0    , pRect->y0 + 1, pRect->x0 + 1, pRect->y1 - 1);
  GUI_FillRect(pRect->x1 - 1, pRect->y0 + 1, pRect->x1    , pRect->y1 - 1);
  GUI_RestoreContext(&Context);
}

/*********************************************************************
*
*       _DrawUp
*
* Function description
*   Gets the rectangle of the current window and uses _DrawUpRect()
*   for drawing the effect.
*/
static void _DrawUp(void) {
  GUI_RECT r;
  WM_GetClientRect(&r);
  _DrawUpRect(&r);
}

/*********************************************************************
*