using System;
using System.Drawing;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Runtime.InteropServices;

namespace ShortcutUtil
{
    public class IconExtractor
    {

        public static Icon Extract(string file, int number, bool largeIcon)
        {
            IntPtr large;
            IntPtr small;
            ExtractIconEx(file, number, out large, out small, 1);
            try
            {
                return Icon.FromHandle(largeIcon ? large : small);
            }
            catch
            {
                return null;
            }

        }

        [DllImport("Shell32.dll", EntryPoint = "ExtractIconExW", CharSet = CharSet.Unicode, ExactSpelling = true, CallingConvention = CallingConvention.StdCall)]
        private static extern int ExtractIconEx(string sFile, int iIndex, out IntPtr piLargeVersion, out IntPtr piSmallVersion, int amountIcons);

    }
}