BYTE* m_pBmpData = NULL;
	
       BITMAPINFO* m_pBmpInfo = new BITMAPINFO[sizeof(BITMAPINFOHEADER)+sizeof(RGBQUAD)];
	m_pBmpInfo->bmiHeader.biSize = sizeof(BITMAPINFOHEADER);
	m_pBmpInfo->bmiHeader.biBitCount = 24;
	m_pBmpInfo->bmiHeader.biWidth = m_nWidth;
	m_pBmpInfo->bmiHeader.biHeight = 0-m_nHeight;
	m_pBmpInfo->bmiHeader.biPlanes = 1;
	m_pBmpInfo->bmiHeader.biCompression = BI_RGB;
	m_pBmpInfo->bmiHeader.biSizeImage = 0;
	m_pBmpInfo->bmiHeader.biXPelsPerMeter = 0;
	m_pBmpInfo->bmiHeader.biYPelsPerMeter = 0;
	m_pBmpInfo->bmiHeader.biClrUsed = 0;
	m_pBmpInfo->bmiHeader.biClrImportant = 0;

        CBitmap* pBitmap3 = new CBitmap();
	HDC hDC = GetDC()->GetSafeHdc(); 
	HBITMAP hBitmap;
	hBitmap=CreateDIBitmap(hDC,(BITMAPINFOHEADER *)m_pBmpInfo,CBM_INIT,(VOID *)m_pBmpData,m_pBmpInfo,DIB_RGB_COLORS);  
	
	pBitmap3->Attach(hBitmap);

	BITMAP   bm;
	pBitmap3->GetBitmap(&bm);             

BMP字節流轉成CBitmap類