增加24色Rebar的代码片断

int CMainFrame::CreateRebar()
{
 if (!m_wndToolBar.CreateEx(this, TBSTYLE_FLAT, WS_CHILD | WS_VISIBLE | CBRS_TOP
  | CBRS_GRIPPER | CBRS_TOOLTIPS | CBRS_FLYBY | CBRS_SIZE_DYNAMIC) ||
  !m_wndToolBar.LoadToolBar(IDR_MAINFRAME))
 {
  TRACE0("Failed to create toolbar\n");
  return -1;      // fail to create
 }

  // attach the hicolor bitmaps to the toolbar
 AttachToolbarImages (IDB_HICOLOR_TOOLBAR,
       IDB_HICOLOR_TOOLBAR_DISABLED,
       IDB_HICOLOR_TOOLBAR_HOT);
 return 0;
}
// find every pixel of the default background color in the specified
 // bitmap and set each one to the user's button color.
static void ReplaceBackgroundColor (CBitmap& ioBM)
{
  // figure out how many pixels there are in the bitmap
 BITMAP  bmInfo;

 VERIFY (ioBM.GetBitmap (&bmInfo));
 
  // add support for additional bit depths here if you choose
 VERIFY (bmInfo.bmBitsPixel == 24);
 VERIFY (bmInfo.bmWidthBytes == (bmInfo.bmWidth * 3));

 const UINT  numPixels (bmInfo.bmHeight * bmInfo.bmWidth);

  // get a pointer to the pixels
    DIBSECTION  ds;

    VERIFY (ioBM.GetObject (sizeof (DIBSECTION), &ds) == sizeof (DIBSECTION));

 RGBTRIPLE*  pixels = reinterpret_cast<RGBTRIPLE*>(ds.dsBm.bmBits);
 VERIFY (pixels != NULL);

  // get the user's preferred button color from the system
 const COLORREF  buttonColor (::GetSysColor (COLOR_BTNFACE));
 const RGBTRIPLE  userBackgroundColor = {
  GetBValue (buttonColor), GetGValue (buttonColor), GetRValue (buttonColor)};

  // search through the pixels, substituting the user's button
  // color for any pixel that has the magic background color
 for (UINT i = 0; i < numPixels; ++i)
 {
  if (pixels [i].rgbtBlue == kBackgroundColor.rgbtBlue &&
   pixels [i].rgbtGreen == kBackgroundColor.rgbtGreen &&
   pixels [i].rgbtRed == kBackgroundColor.rgbtRed)
  {
   pixels [i] = userBackgroundColor;
  }
 }
}

 // create an image list for the specified BMP resource
static void MakeToolbarImageList (UINT   inBitmapID,
          CImageList& outImageList)
{
 CBitmap  bm;

  // if we use CBitmap::LoadBitmap() to load the bitmap, the colors
  // will be reduced to the bit depth of the main screen and we won't
  // be able to access the pixels directly. To avoid those problems,
  // we'll load the bitmap as a DIBSection instead and attach the
  // DIBSection to the CBitmap.
 VERIFY (bm.Attach (::LoadImage (::AfxFindResourceHandle(
  MAKEINTRESOURCE (inBitmapID), RT_BITMAP),
  MAKEINTRESOURCE (inBitmapID), IMAGE_BITMAP, 0, 0,
  (LR_DEFAULTSIZE | LR_CREATEDIBSECTION))));

  // replace the specified color in the bitmap with the user's
  // button color
 ::ReplaceBackgroundColor (bm);

  // create a 24 bit image list with the same dimensions and number
  // of buttons as the toolbar
 VERIFY (outImageList.Create (
  kImageWidth, kImageHeight, kToolBarBitDepth, kNumImages, 0));

  // attach the bitmap to the image list
 VERIFY (outImageList.Add (&bm, RGB (0, 0, 0)) != -1);
}

 // load the high color toolbar images and attach them to m_wndToolBar
void CMainFrame::AttachToolbarImages (UINT inNormalImageID,
           UINT inDisabledImageID,
           UINT inHotImageID)
{
  // make high-color image lists for each of the bitmaps
 ::MakeToolbarImageList (inNormalImageID, m_ToolbarImages);
 ::MakeToolbarImageList (inDisabledImageID, m_ToolbarImagesDisabled);
 ::MakeToolbarImageList (inHotImageID, m_ToolbarImagesHot);

  // get the toolbar control associated with the CToolbar object
 CToolBarCtrl& barCtrl = m_wndToolBar.GetToolBarCtrl();

  // attach the image lists to the toolbar control
 barCtrl.SetImageList (&m_ToolbarImages);
 barCtrl.SetDisabledImageList (&m_ToolbarImagesDisabled);
 barCtrl.SetHotImageList (&m_ToolbarImagesHot);
}

void CMainFrame::OnCreateRebar()
{
 if(0 > CreateRebar()) return;

 m_wndToolBar.EnableDocking(CBRS_ALIGN_ANY);
 EnableDocking(CBRS_ALIGN_ANY);
 DockControlBar(&m_wndToolBar);
}