捕捉屏幕，处理DDB数据，如何获取像素数据

[WanGong]

使用一下代码获取了当前的屏幕图像，想要直接对其像素数据进行处理，
CRect rect(0, 0, ::GetSystemMetrics(SM_CXSCREEN), ::GetSystemMetrics(SM_CYSCREEN));
// create a screen and a memory device context
HDC hDCScreen = ::CreateDC(_T("DISPLAY"), NULL, NULL, NULL);
HDC hDCMem = ::CreateCompatibleDC(hDCScreen);
// create a compatible bitmap and select it in the memory DC
HBITMAP hBitmap =
::CreateCompatibleBitmap(hDCScreen, rect.Width(), rect.Height());
HBITMAP hBmpOld = (HBITMAP)::SelectObject(hDCMem, hBitmap);

// bit-blit from screen to memory device context
// note: CAPTUREBLT flag is required to capture layered windows
DWORD dwRop = SRCCOPY | CAPTUREBLT;
BOOL bRet = ::BitBlt(hDCMem, 0, 0, rect.Width(), rect.Height(),
hDCScreen,
rect.left, rect.top, dwRop);
CImage m_image。Attach(hBitmap);
但是调用m_image.getBits失败，后查明原因，因为m_image当前是DDB图像，请问各位大侠如何对DBB图像的像素值进行直接处理呢？谢谢！

[e3internet]

想要怎么的处理？

[Lactoferrin]

CreateDIBSection