如何以编程方式操作Windows桌面图标位置？

using System;
using System.Runtime.InteropServices;

public class DesktopIconPosition
{
    [DllImport("user32.dll", CharSet = CharSet.Auto)]
    private static extern IntPtr SendMessage(IntPtr hWnd, uint Msg, IntPtr wParam, IntPtr lParam);

    [DllImport("user32.dll", CharSet = CharSet.Auto)]
    private static extern IntPtr FindWindow(string lpClassName, string lpWindowName);

    private const uint WM_COMMAND = 0x111;
    private const uint WM_SYSCOMMAND = 0x112;
    private const uint SC_CLOSE = 0xF060;
    private const uint SC_MINIMIZE = 0xF020;
    private const uint SC_MAXIMIZE = 0xF030;
    private const uint SC_SIZE = 0xF000;
    private const uint SC_MOVE = 0xF010;

    public static void SetDesktopIconPosition(int x, int y)
    {
        IntPtr hWnd = FindWindow("Progman", null);
        SendMessage(hWnd, WM_COMMAND, (IntPtr)SC_MINIMIZE, IntPtr.Zero);
        SendMessage(hWnd, WM_COMMAND, (IntPtr)SC_MAXIMIZE, IntPtr.Zero);
        SendMessage(hWnd, WM_SYSCOMMAND, (IntPtr)SC_MOVE, IntPtr.Zero);
        SendMessage(hWnd, WM_LBUTTONDOWN, IntPtr.Zero, (IntPtr)((y << 16) + x));
        SendMessage(hWnd, WM_LBUTTONUP, IntPtr.Zero, (IntPtr)((y << 16) + x));
    }
}