/// <summary>
/// Read a single icon (.ico).
/// </summary>
/// <param name="lpData">Pointer to the beginning of this icon's data.</param>
/// <param name="lpAllData">Pointer to the beginning of all icon data.</param>
/// <returns>Pointer to the end of this icon's data.</returns>
internal IntPtr Read(IntPtr lpData, IntPtr lpAllData)
{
_header = (FileGrpIconDirEntry)Marshal.PtrToStructure(lpData, typeof(FileGrpIconDirEntry));
var lpImage = new IntPtr(lpAllData.ToInt32() + _header.dwFileOffset);
_image.Read(lpImage, _header.dwImageSize);
return(new IntPtr(lpData.ToInt32() + Marshal.SizeOf(_header)));
}
/// <summary>
/// Read the bitmap image.
/// </summary>
/// <param name="dibBits">DIB bits.</param>
/// <param name="size">Size of image.</param>
internal virtual void ReadImage(IntPtr dibBits, UInt32 size)
{
_image.Read(dibBits, size);
}