参考了这篇文章：
http://blog.csdn.net/sonyicn/archive/2006/05/20/746280.aspx
现实代码如下：
using System;using System.Collections.Generic;using System.Text;using System.Runtime.InteropServices;using Microsoft.Win32;using System.IO;namespace RockLib
{
public class Utils
{
/// <summary> /// Change user's desktop wallpaper /// </summary> /// <param name="picturePath"></param> /// <param name="style"></param>
/// <returns></returns> public static bool ChangeWallPaper(string picturePath, WallPaperStyle style) { RegistryKey myRegKey = Registry.CurrentUser.OpenSubKey("Control Panel\\desktop", true); switch (style) { case WallPaperStyle.Center: myRegKey.SetValue("TileWallpaper", "0"); myRegKey.SetValue("WallpaperStyle", "0"); break; case WallPaperStyle.Tile: myRegKey.SetValue("TileWallpaper", "1"); myRegKey.SetValue("WallpaperStyle", "0"); break; case WallPaperStyle.Stretch: myRegKey.SetValue("TileWallpaper", "0"); myRegKey.SetValue("WallpaperStyle", "2"); break; default: throw new NotSupportedException("style"); } myRegKey.Close(); int intResult; if (!File.Exists(picturePath)) { throw new ArgumentException(string.Format("Picture {0} cannot be found.", picturePath)); } intResult = SystemParametersInfo(20, 3, picturePath, 0x1 | 0x2); return intResult > 0; } [DllImport("user32.dll", CharSet = CharSet.Auto)] public static extern int SystemParametersInfo (int uAction, int uParam, string lpvParam, int fuWinIni); } public enum WallPaperStyle { Center, Tile, Stretch }
}
测试代码：
Code
