Class To Change Wallpaper In Xp,Vista,Windows 7 From C#.Net

最新推荐文章于 2025-09-12 14:26:13 发布

转载最新推荐文章于 2025-09-12 14:26:13 发布 · 59 阅读

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原文链接：http://www.cnblogs.com/samblog/archive/2012/04/01/2428777.html

文章标签：

#runtime

本文提供了一个C#代码示例，用于动态地从指定URI下载图片并设置为Windows桌面壁纸，支持拉伸、居中和平铺三种显示风格。

using System;
using System.Collections.Generic;
using System.Text;
using System.Runtime.InteropServices;
using System.IO;
using Microsoft.Win32;
using System.Drawing;


        public sealed  class clsWallpaper
        {
            
            const int SPI_SETDESKWALLPAPER = 20;
            const int SPIF_UPDATEINIFILE = 0x01;
            const int SPIF_SENDWININICHANGE = 0x02;

            [DllImport("user32.dll", CharSet = CharSet.Auto)]
            static extern int SystemParametersInfo(int uAction, int uParam, string lpvParam, int fuWinIni);

            public enum Style : int
            {
                Tiled,
                Centered,
                Stretched
            }

            public static void Set(Uri uri, Style style)
            {
                System.IO.Stream s = new System.Net.WebClient().OpenRead(uri.ToString());

                System.Drawing.Image img = System.Drawing.Image.FromStream(s);
                string tempPath = Path.Combine(Path.GetTempPath(), "wallpaper.bmp");
                img.Save(tempPath, System.Drawing.Imaging.ImageFormat.Bmp);

                RegistryKey key = Registry.CurrentUser.OpenSubKey(@"Control Panel\Desktop", true);
                if (style == Style.Stretched)
                {
                    key.SetValue(@"WallpaperStyle", 2.ToString());
                    key.SetValue(@"TileWallpaper", 0.ToString());
                }

                if (style == Style.Centered)
                {
                    key.SetValue(@"WallpaperStyle", 1.ToString());
                    key.SetValue(@"TileWallpaper", 0.ToString());
                }

                if (style == Style.Tiled)
                {
                    key.SetValue(@"WallpaperStyle", 1.ToString());
                    key.SetValue(@"TileWallpaper", 1.ToString());
                }

                SystemParametersInfo(SPI_SETDESKWALLPAPER,
                    0,
                    tempPath,
                    SPIF_UPDATEINIFILE | SPIF_SENDWININICHANGE);
            }
          
        }

转载于:https://www.cnblogs.com/samblog/archive/2012/04/01/2428777.html