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我使用了一个CImageList控件来装入位图,用于TREE控件,其它的色彩都很正常就是橙色被显示成为黄色.

你只能使用系统指定的20种颜色(橙色不包括在内);当然,你也可以用下面的方法来装载位图资源而不受颜色数的限制.

HBITMAP LoadResourceBitmap(HINSTANCE hInstance, LPSTR lpString,

                           HPALETTE FAR* lphPalette)


    HRSRC  hRsrc;

    HGLOBAL hGlobal;

    HBITMAP hBitmapFinal = NULL;

    LPBITMAPINFOHEADER  lpbi;

    HDC hdc;

    int iNumColors;

    if (hRsrc = ::FindResource(hInstance, lpString, RT_BITMAP))


  hGlobal = ::LoadResource(hInstance, hRsrc);

  lpbi = (LPBITMAPINFOHEADER)LockResource(hGlobal);

  hdc = ::GetDC(NULL);

  *lphPalette =  CreateDIBPalette ((LPBITMAPINFO)lpbi, &iNumColors);

  if (*lphPalette)

  {

   ::SelectPalette(hdc,*lphPalette,FALSE);

   ::RealizePalette(hdc);

  }

  hBitmapFinal = ::CreateDIBitmap(hdc,

       (LPBITMAPINFOHEADER)lpbi,

       (LONG)CBM_INIT,

       (LPSTR)lpbi + lpbi->biSize + iNumColors * sizeof(RGBQUAD),

                   (LPBITMAPINFO)lpbi,

                   DIB_RGB_COLORS );

  ::ReleaseDC(NULL,hdc);

//  ::UnlockResource(hGlobal);

//  ::FreeResource(hGlobal);


    return (hBitmapFinal);


// internally used by LoadResourceBitmap

HPALETTE CreateDIBPalette (LPBITMAPINFO lpbmi, LPINT lpiNumColors)


LPBITMAPINFOHEADER  lpbi;

LPLOGPALETTE     lpPal;

HANDLE           hLogPal;

HPALETTE         hPal = NULL;

int              i;

lpbi = (LPBITMAPINFOHEADER)lpbmi;

if (lpbi->biBitCount <= 8)

  *lpiNumColors = (1 << lpbi->biBitCount);

else

  *lpiNumColors = 0;  // No palette needed for 24 BPP DIB

if (lpbi->biClrUsed > 0)

  *lpiNumColors = lpbi->biClrUsed;  // Use biClrUsed

if (*lpiNumColors)


  hLogPal = GlobalAlloc (GHND, sizeof (LOGPALETTE) +

   sizeof (PALETTEENTRY) * (*lpiNumColors));

  lpPal = (LPLOGPALETTE) GlobalLock (hLogPal);

  lpPal->palVersion    = 0x300;

  lpPal->palNumEntries = *lpiNumColors;

  for (i = 0;  i < *lpiNumColors;  i++)

  {

   lpPal->pal

PalEntry[i].

peRed   = lpbmi->bmiColors[i].rgbRed;

   lpPal->palPalEntry[i].peGreen = lpbmi->bmiColors[i].rgbGreen;

   lpPal->palPalEntry[i].peBlue  = lpbmi->bmiColors[i].rgbBlue;

   if (i<=10 || i>=246)

    lpPal->palPalEntry[i].peFlags = PC_NOCOLLAPSE;

   else

    lpPal->palPalEntry[i].peFlags = 0;

  }

  hPal = CreatePalette (lpPal);

  GlobalUnlock (hLogPal);

  GlobalFree   (hLogPal);


return hPal;


该函数也重载了位图调色板,这个功能被CBitmap::LoadBitmap忽略了(它假定位图只使用20种颜色).因此要保证在DC中有SelectPalette和RealizePalette. 

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