{
		delete m_pBitmap;
		m_pBitmap = NULL;
		m_hBitmap = NULL;
	}
	m_hBitmap = DIBToDIBSection(m_hDib);
	if (m_hBitmap == NULL)
		return FALSE;
	m_pBitmap = new CBitmap;
	m_pBitmap->Attach(m_hBitmap);

	return TRUE;
}

BOOL CDib::BuildPalette()
{
	if (m_pPalette != NULL)
	{
		delete m_pPalette;
		m_pPalette = NULL;
	}
	HPALETTE hPalette = CreateDIBPalette(m_hDib);
	if (hPalette == NULL)
		return FALSE;
	m_pPalette = new CPalette;
	m_pPalette->Attach(hPalette);

	return TRUE;
}

BOOL CDib::UpdateInternal()
{
	BuildPalette();
	return BuildBitmap();
}

CPalette* CDib::GetPalette()
{
	return m_pPalette;
}

CBitmap* CDib::GetBitmap()
{
	return m_pBitmap;
}

BOOL CDib::IsEmpty()
{
	if (m_hDib == NULL)
		return TRUE;

	if (! GlobalLock(m_hDib))
		return TRUE;

	GlobalUnlock(m_hDib);
	return FALSE;
}

DWORD CDib::GetCompression()
{
    LPBITMAPINFOHEADER lpBI = (LPBITMAPINFOHEADER)GlobalLock(m_hDib); 
    if (!lpBI) 
	{
		GlobalUnlock(m_hDib);
        return 0; 
	}
 
	DWORD dwCompression = lpBI->biCompression;
	GlobalUnlock(m_hDib);

	return dwCompression;
}

WORD CDib::GetBitCount()
{
    LPBITMAPINFOHEADER lpBI = (LPBITMAPINFOHEADER)GlobalLock(m_hDib); 
    if (!lpBI) 
	{
		GlobalUnlock(m_hDib);
        return 0; 
	}
 
	WORD wBitCount = lpBI->biBitCount;
	GlobalUnlock(m_hDib);

	return wBitCount;
}

LONG CDib::GetWidth()
{
	// get DIB buffer pointer
    LPBYTE lpDIB = (LPBYTE)GlobalLock(m_hDib); 
	if (! lpDIB)
	{
		GlobalUnlock(m_hDib);
		return 0;
	}

	LONG lWidth = (LONG)DIBWidth(lpDIB);
	GlobalUnlock(m_hDib);

	return lWidth; 
}

LONG CDib::GetHeight()
{
	// get DIB buffer pointer
    LPBYTE lpDIB = (LPBYTE)GlobalLock(m_hDib); 
	if (! lpDIB)
	{
		GlobalUnlock(m_hDib);
		return 0;
	}

	LONG lHeight = (LONG)DIBHeight(lpDIB);
	GlobalUnlock(m_hDib);

	return lHeight; 
}

LONG CDib::GetWidthBytes()
{
	return WIDTHBYTES((GetWidth())*((DWORD)GetBitCount()));
}

COLORREF CDib::GetPixel(LONG x, LONG y)
{
	COLORREF cColor;
	switch (GetBitCount())
	{
		case 1 :	if (1<<(7-x%8) & 
						*(BYTE*)(GetBitsPtr()+GetPixelOffset(x, y)))
						cColor = RGB(255,255,255);
					else
						cColor = RGB(0,0,0);
					break;
		case 4 :	
				{
					PALETTEENTRY PaletteColors[16];
					m_pPalette->GetPaletteEntries(0, 16, PaletteColors);
					int nIndex = (*(BYTE*)(GetBitsPtr()+GetPixelOffset(x, y)) & 
								   (x%2 ? 0x0f : 0xf0)) >> (x%2 ? 0 : 4);
					cColor = RGB(PaletteColors[nIndex].peRed,
								 PaletteColors[nIndex].peGreen,
								 PaletteColors[nIndex].peBlue);
				}
					break;
		case 8 :	
				{
					PALETTEENTRY PaletteColors[256];
					m_pPalette->GetPaletteEntries(0, 256, PaletteColors);
					int nIndex = *(BYTE*)(GetBitsPtr()+GetPixelOffset(x, y));
					cColor = RGB(PaletteColors[nIndex].peRed,
								 PaletteColors[nIndex].peGreen,
								 PaletteColors[nIndex].peBlue);
				}
					break;
		default:	cColor = RGB(*(BYTE*)(GetBitsPtr()+GetPixelOffset(x, y)),
								 *(BYTE*)(GetBitsPtr()+GetPixelOffset(x, y)+1),
								 *(BYTE*)(GetBitsPtr()+GetPixelOffset(x, y)+2));
					break;
	}
	return cColor;
}

LONG CDib::GetPixelOffset(LONG x, LONG y)
{
	return (GetHeight()-y-1)*GetWidthBytes()+x/(8/GetBitCount());
}

LPBYTE CDib::GetBitsPtr()
{
    LPBYTE lpDIB = (LPBYTE)GlobalLock(m_hDib); 
    if (! lpDIB) 
	{
		GlobalUnlock(m_hDib);
		return NULL;
	}

	LPBYTE lpData = FindDIBBits(lpDIB);
	GlobalUnlock(m_hDib);

	return lpData;
}

HANDLE CDib::GetHandle()
{
	return m_hDib;
}

WORD CDib::GetColorNumber()
{
    LPBYTE lpBI = (LPBYTE)GlobalLock(m_hDib); 
    if (! lpBI) 
	{
		GlobalUnlock(m_hDib);
		return 0;
	}
 
	WORD wColors = DIBNumColors(lpBI);
	GlobalUnlock(m_hDib);

	return wColors;
}

WORD CDib::GetPaletteSize()
{
    LPBYTE lpBI = (LPBYTE)GlobalLock(m_hDib); 
    if (! lpBI) 
	{
		GlobalUnlock(m_hDib);
		return 0;
	}
 
	WORD wPalSize = PaletteSize(lpBI);
	GlobalUnlock(m_hDib);

	return wPalSize;
}

CDC* CDib::BeginPaint(CDC *pDC)
{
	m_pMemDC = new CDC;
	m_pMemDC->CreateCompatibleDC(pDC);
	m_pPaletteTmp = m_pMemDC->SelectPalette(m_pPalette, TRUE);
	m_pMemDC->RealizePalette();
	m_pBitmapTmp = (CBitmap *)m_pMemDC->SelectObject(m_pBitmap);
	return m_pMemDC;
}

void CDib::EndPaint()
{
	m_pMemDC->SelectObject(m_pBitmapTmp);
	m_pMemDC->SelectPalette(m_pPaletteTmp, TRUE);
	delete m_pMemDC;

	Create(m_hBitmap);
}

BOOL CDib::DisplayPalette(CDC* pDC, CRect rc)
{
	return ::DisplayPalette(pDC->GetSafeHdc(), &rc, (HPALETTE)m_pPalette->GetSafeHandle());
}

BOOL CDib::DisplayTransparent(CDC * pDC, int x, int y, COLORREF cTransparentColor)
{
	CPalette* pOldPal = pDC->SelectPalette(m_pPalette, TRUE);
    pDC->RealizePalette();

	DrawTransparentBitmap(pDC->GetSafeHdc(), 
						  m_hBitmap, 
						  x, 
						  y, 
						  cTransparentColor);

	pDC->SelectPalette(pOldPal, TRUE);

	return TRUE;
}

#define UPVALUE(x, n)	((x)/((n) ? (n) : 1) + ((x)%((n) ? (n) : 1) ? 1 : 0))
BOOL CDib::DisplayFadeIn(CDC* pDC, int x, int y, int nDeta, DWORD dwDelayTime)
{
	// backup DIB
	HDIB hDib = CopyHandle(m_hDib);

	// get color number
	WORD wNumColors = GetColorNumber();

	BITMAPINFO *bmi = (BITMAPINFO *)GlobalLock(m_hDib);
	BITMAPINFO *bmi0 = (BITMAPINFO *)GlobalLock(hDib);
	if (! bmi)
		return FALSE;

	BOOL bDone = FALSE;
	int nDetaR, nDetaG, nDetaB;
	// fade out
	if (wNumColors)		// There is palette
	{
		// build black image
		for (WORD i=0; i<wNumColors; ++i)
		{
			bmi->bmiColors[i].rgbRed = 0 ;
			bmi->bmiColors[i].rgbGreen = 0 ;
			bmi->bmiColors[i].rgbBlue = 0 ;
		}
		UpdateInternal();
		// display black first
		Display(pDC, x, y, SRCCOPY);

		while (! bDone)
		{
			bDone = TRUE;
			for (WORD i=0; i<wNumColors; i++)
			{
				nDetaR = UPVALUE(bmi0->bmiColors[i].rgbRed-bmi->bmiColors[i].rgbRed, nDeta);
				nDetaG = UPVALUE(bmi0->bmiColors[i].rgbGreen-bmi->bmiColors[i].rgbGreen, nDeta);
				nDetaB = UPVALUE(bmi0->bmiColors[i].rgbBlue-bmi->bmiColors[i].rgbBlue, nDeta);
				if (! Fade(nDetaR, nDetaG, nDetaB,
						 bmi0->bmiColors[i].rgbRed,
						 bmi0->bmiColors[i].rgbGreen,
						 bmi0->bmiColors[i].rgbBlue,
						 &(bmi->bmiColors[i].rgbRed),
						 &(bmi->bmiColors[i].rgbGreen),
						 &(bmi->bmiColors[i].rgbBlue)))
					 bDone = FALSE;
			}
			UpdateInternal();
			Display(pDC, x, y, SRCCOPY);
			Delay(dwDelayTime);
			nDeta--;
		}
	}
	else		// No palette
	{
		// should increase the speed!
		dwDelayTime /= 10;
		// bits position
		LPBITMAPINFOHEADER lpbi = (LPBITMAPINFOHEADER)bmi;
		LPBYTE lpBits = (LPBYTE)lpbi + lpbi->biSize;
		LPBYTE lpBits0 = (LPBYTE)bmi0 + lpbi->biSize;
		int nDelta = WIDTHBYTES(lpbi->biBitCount*lpbi->biWidth) - lpbi->biWidth*lpbi->biBitCount/8;
		int nx, ny;

		// build black image
		for (ny=0; ny<lpbi->biHeight; ny++)
		{
			for (nx=0; nx<lpbi->biWidth; nx++)
			{
				*lpBits++ = 0;
				*lpBits++ = 0;
				*lpBits++ = 0;
			}
			lpBits += nDelta; 
		}
		lpBits = (LPBYTE)lpbi + lpbi->biSize;
		UpdateInternal();
		// display black first
		Display(pDC, x, y, SRCCOPY);

		BYTE r, g, b, r0, g0, b0;
		while (! bDone)
		{
			bDone = TRUE;
			for (ny=0; ny<lpbi->biHeight; ny++)
			{
				for (nx=0; nx<lpbi->biWidth; nx++)
				{
					b0 = (BYTE)*lpBits0++;
					g0 = (BYTE)*lpBits0++;
					r0 = (BYTE)*lpBits0++;
					b = (BYTE)*(lpBits);
					g = (BYTE)*(lpBits+1);
					r = (BYTE)*(lpBits+2);
					nDetaR = UPVALUE(r0-r, nDeta);
					nDetaG = UPVALUE(g0-g, nDeta);
					nDetaB = UPVALUE(b0-b, nDeta);
					if (! Fade(nDetaR, nDetaG, nDetaB, r0, g0, b0, &r, &g, &b))
						bDone = FALSE;
					*lpBits++ = b;
					*lpBits++ = g;
					*lpBits++ = r;
				}
				lpBits += nDelta; 
				lpBits0 += nDelta; 
			}
			lpBits = (LPBYTE)lpbi + lpbi->biSize;
			lpBits0 = (LPBYTE)bmi0 + lpbi->biSize;
			UpdateInternal();
			Display(pDC, x, y, SRCCOPY);
			Delay(dwDelayTime);
			nDeta--;
		}
	}

	// cleanup 
	GlobalUnlock(m_hDib);
	GlobalUnlock(hDib);

	// restore DIB
	m_hDib = CopyHandle(hDib);
	GlobalFree(hDib);

	return TRUE;
}

BOOL CDib::DisplayFadeOut(CDC* pDC, int x, int y, int nDeta, DWORD dwDelayTime)
{
	// display first
	Display(pDC, x, y, SRCCOPY);
	
	// backup DIB
	HDIB hDib = CopyHandle(m_hDib);

	// get color number
	WORD wNumColors = GetColorNumber();

	BITMAPINFO *bmi = (BITMAPINFO *)GlobalLock(m_hDib);
	if (! bmi)
		return FALSE;

	BOOL bDone = FALSE;
	int nDetaR, nDetaG, nDetaB;
	// fade out
	if (wNumColors)		// There is palette
	{
		while (! bDone)
		{
			bDone = TRUE;
			for (WORD i=0; i<wNumColors; i++)
			{
				nDetaR = -1*UPVALUE(bmi->bmiColors[i].rgbRed, nDeta);
				nDetaG = -1*UPVALUE(bmi->bmiColors[i].rgbGreen, nDeta);
				nDetaB = -1*UPVALUE(bmi->bmiColors[i].rgbBlue, nDeta);
				if (! Fade(nDetaR, nDetaG, nDetaB,
						 0, 0, 0,
						 &(bmi->bmiColors[i].rgbRed),
						 &(bmi->bmiColors[i].rgbGreen),
						 &(bmi->bmiColors[i].rgbBlue)))
					 bDone = FALSE;
			}
			UpdateInternal();
			Display(pDC, x, y, SRCCOPY);
			Delay(dwDelayTime);
			nDeta--;
		}
	}
	else		// No palette
	{
		// should increase the speed!
		dwDelayTime /= 10;
		// bits position
		LPBITMAPINFOHEADER lpbi = (LPBITMAPINFOHEADER)bmi;
		LPBYTE lpBits = (LPBYTE)lpbi + lpbi->biSize;
		int nDelta = WIDTHBYTES(lpbi->biBitCount*lpbi->biWidth) - lpbi->biWidth*lpbi->biBitCount/8;

		BYTE r, g, b;
		int nx, ny;
		while (! bDone)
		{
			bDone = TRUE;
			for (ny=0; ny<lpbi->biHeight; ny++)
			{
				for (nx=0; nx<lpbi->biWidth; nx++)
				{
					b = (BYTE)*(lpBits);
					g = (BYTE)*(lpBits+1);
					r = (BYTE)*(lpBits+2);
					nDetaR = -1*UPVALUE(r, nDeta);
					nDetaG = -1*UPVALUE(g, nDeta);
					nDetaB = -1*UPVALUE(b, nDeta);
					if (! Fade(nDetaR, nDetaG, nDetaB, 0, 0, 0, &r, &g, &b))
						bDone = FALSE;
					*lpBits++ = b;
					*lpBits++ = g;
					*lpBits++ = r;
				}
				lpBits += nDelta; 
			}
			lpBits = (LPBYTE)lpbi + lpbi->biSize;
			UpdateInternal();
			Display(pDC, x, y, SRCCOPY);
			Delay(dwDelayTime);
			nDeta--;
		}
	}

	// cleanup 
	GlobalUnlock(m_hDib);

	// restore DIB
	m_hDib = CopyHandle(hDib);
	GlobalFree(hDib);

	return TRUE;
}

BOOL CDib::DisplayMosaicIn(CDC *pDC, int xx, int yy, int nTileSize, DWORD dwDelayTime, DWORD dwRop)
{
    // count the number of dwTileNum
	DWORD dwTileNum=(GetWidth()/nTileSize + ((GetWidth() % nTileSize) ? 1:0))*
					(GetHeight()/nTileSize + ((GetHeight() % nTileSize) ? 1:0));
	// allocate tile array
	POINT *point = new POINT[dwTileNum];
	if (point == NULL)
		return FALSE;

	// initialize the tile array
	LONG x=0, y=0;
	for (DWORD i=0;i<dwTileNum;++i) 
	{
		point[i].x=x;
		point[i].y=y;

		x+=nTileSize;
		if (x >= GetWidth()) 
		{
			x=0;
            y+=nTileSize;
		}
	}

	CDC MemDC;
	MemDC.CreateCompatibleDC(pDC);
	CBitmap* pOldBmp = MemDC.SelectObject(m_pBitmap);

	CPalette* pOldPal = pDC->SelectPalette(m_pPalette, TRUE);
    pDC->RealizePalette();
	
	double fMax = RAND_MAX;
	BOOL  bDone = FALSE;
	while (! bDone)
	{
		DWORD n = (DWORD)((double)dwTileNum*(double)((double)rand()/fMax));
		x = point[n].x;
		y = point[n].y;

		pDC->BitBlt(xx+x,
					yy+y,
					nTileSize,
					nTileSize,
					&MemDC,
					x,
					y,
					dwRop);

		dwTileNum--;
		bDone = !dwTileNum;

		point[n].x = point[dwTileNum].x;
		point[n].y = point[dwTileNum].y;
		Delay(dwDelayTime);
	}

	MemDC.SelectObject(pOldBmp);
	pDC->SelectPalette(pOldPal, TRUE);

	delete[] point;

	return TRUE;
}

BOOL CDib::DisplayMosaicOut(CDC *pDC, int xx, int yy, int nTileSize, DWORD dwDelayTime)
{
	// display dib first
	CDC MemDC;
	MemDC.CreateCompatibleDC(pDC);
	CBitmap* pOldBmp = MemDC.SelectObject(m_pBitmap);

	CPalette* pOldPal = pDC->SelectPalette(m_pPalette, TRUE);
    pDC->RealizePalette();

	pDC->BitBlt(xx,	yy,
				GetWidth(),	GetHeight(),
				&MemDC,
				0, 0,
				SRCCOPY);

    // count the number of dwTileNum
	DWORD dwTileNum=(GetWidth()/nTileSize + ((GetWidth() % nTileSize) ? 1:0))*
					(GetHeight()/nTileSize + ((GetHeight() % nTileSize) ? 1:0));
	// allocate tile array
	POINT *point = new POINT[dwTileNum];
	if (point == NULL)
		return FALSE;

	// initialize the tile array
	LONG x=0, y=0;
	for (DWORD i=0;i<dwTileNum;++i) 
	{
		point[i].x=x;
		point[i].y=y;

		x+=nTileSize;
		if (x >= GetWidth()) 
		{
			x=0;
            y+=nTileSize;
		}
	}

	CBrush brush(GetSysColor(COLOR_WINDOW));
	CBrush* oldbrush = pDC->SelectObject(&brush);
	CPen pen(PS_SOLID,1,GetSysColor(COLOR_WINDOW));
    CPen* oldpen = pDC->SelectObject(&pen);
	
	double fMax = RAND_MAX;
	BOOL bDone = FALSE;
	while (! bDone)
	{
		DWORD n = (DWORD)((double)dwTileNum*(double)((double)rand()/fMax));
		x = point[n].x;
		y = point[n].y;

		pDC->Rectangle(	xx+x,
						yy+y,
						xx+x+nTileSize+1,
						yy+y+nTileSize+1);

		dwTileNum--;
		bDone = !dwTileNum;

		point[n].x = point[dwTileNum].x;
		point[n].y = point[dwTileNum].y;
		Delay(dwDelayTime);
	}

	MemDC.SelectObject(pOldBmp);
	pDC->SelectPalette(pOldPal, TRUE);
	pDC->SelectObject(oldbrush);
    pDC->SelectObject(oldpen);

	delete[] point;

	return TRUE;
}

BOOL CDib::Display(int nEffect, CDC* pDC, int x, int y, int nDeta, DWORD dwDelayTime, DWORD dwRop)
{
	if (nEffect == EFFECT_FADE)
		return DisplayFadeIn(pDC, x, y, nDeta, dwDelayTime);
	else if (nEffect == EFFECT_MOSAIC)
		return DisplayMosaicIn(pDC, x, y, nDeta, dwDelayTime, dwRop);

	CDC MemDC;
	MemDC.CreateCompatibleDC(pDC);
	CBitmap* pOldBmp = MemDC.SelectObject(m_pBitmap);

	CPalette* pOldPal = pDC->SelectPalette(m_pPalette, TRUE);
    pDC->RealizePalette();

	LONG i = 0;
	BOOL bDone = FALSE;
	while (! bDone)
	{
		switch (nEffect)
		{
		case EFFECT_SCANDOWN:
			if (i > GetHeight())
			{
				i = GetHeight();
				bDone = TRUE;
			}
            pDC->BitBlt(x, 
						y+i,
                        GetWidth(),
						nDeta,
						&MemDC,
                        0,
						i,
						dwRop);
			i += nDeta;
			break;
		case EFFECT_SCANUP:
			if (i > GetHeight())
			{
				i = GetHeight();
				bDone = TRUE;
			}
            pDC->BitBlt(x, 
						y+GetHeight()-i,
                        GetWidth(),
						nDeta,
						&MemDC,
                        0,
						GetHeight()-i,
						dwRop);
			i += nDeta;
			break;
		case EFFECT_SCANRIGHT:
			if (i > GetWidth())
			{
				i = GetWidth();