public static extern int CreateDIBitmap(HDC hdc, ref BITMAPINFOHEADER lpInfoHeader, int dwUsage, IntPtr lpInitBits, ref BITMAPINFO lpInitInfo, int wUsage);
public static extern int StretchDIBits(IntPtr hdc, int XDest, int YDest,
int nDestWidth, int nDestHeight, int XSrc, int YSrc, int nSrcWidth,
int nSrcHeight, IntPtr lpBits, [In] ref BITMAPINFOHEADER lpBitsInfo, uint iUsage,
RasterOp dwRop);