public static extern int GetDIBits([In] IntPtr hdc, [In] IntPtr hbm, uint start, uint cLines, IntPtr lpvBits,
ref BitmapInfo lpbmi, DIBColorTable usage);
/// <summary>
/// The GetDIBits function retrieves the bits of the specified compatible bitmap and copies them into
/// a buffer as a DIB using the specified format
/// </summary>
/// <param name="hdc">Handle to the device context</param>
/// <param name="hbm">Handle to the bitmap. This must be a compatible bitmap (DDB)</param>
/// <param name="start">Specifies the first scan line to retrieve</param>
/// <param name="cLines">Specifies the number of scan lines to retrieve</param>
/// <param name="lpvBits">Pointer to a buffer to receive the bitmap data. If this parameter is null,
/// the function passes the dimensions and format of the bitmap to the BITMAPINFO structure pointed to
/// by the lpbmi parameter</param>
/// <param name="lpbmi">Pointer to a BITMAPINFO structure that specifies the desired format for the DIB data</param>
/// <param name="usage">Specifies the format of the bmiColors member of the BITMAPINFO structure.</param>
/// <returns>If the lpvBits parameter is non-null and the function succeeds, the return value is the number of scan lines copied from the bitmap</returns>
public static int GetDIBits([In] IntPtr hdc, [In] IntPtr hbm, uint start, uint cLines, IntPtr lpvBits,
ref BitmapInfo lpbmi, DIBColorTable usage)
{
return Native.GetDIBits(hdc, hbm, start, cLines, lpvBits, ref lpbmi, usage);
}