Windows – C# – Set Wallpaper and WallpaperStyle

If creating a policy package for SCCM: Compile to EXE, add the EXE you just created to SCCM as a package: Create Package > Environment > Program can run: Only when user is logged on > Run with user rights.

 

Code, Console App

using Microsoft.Win32;
using System;
using System.Runtime.InteropServices;
using System.IO;

namespace ConsoleApp1
{
class Program
{
[DllImport("user32.dll", CharSet = CharSet.Auto)]
private static extern Int32 SystemParametersInfo(
UInt32 action, UInt32 uParam, String vParam, UInt32 winIni);

private static readonly UInt32 SPI_SETDESKWALLPAPER = 0x14;
private static readonly UInt32 SPIF_UPDATEINIFILE = 0x01;
private static readonly UInt32 SPIF_SENDWININICHANGE = 0x02;

static public void SetWallpaper(String path)
{
RegistryKey key = Registry.CurrentUser.OpenSubKey(@"Control Panel\Desktop", true);
key.SetValue(@"WallpaperStyle", 0.ToString()); // 2 is stretched
key.SetValue(@"TileWallpaper", 0.ToString());

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

static void Main(string[] args)
{
string imgWallpaper = @"C:\Windows\Wallpaper.jpg";

// verify
if (File.Exists(imgWallpaper))
{
SetWallpaper(imgWallpaper);
}

}

}
}

Code, Windows App

using System;
using Microsoft.Win32;
using System.Runtime.InteropServices;
using System.IO;

namespace WindowsFormsApp1
{
static class Program
{
[DllImport("user32.dll", CharSet = CharSet.Auto)]
private static extern Int32 SystemParametersInfo(
UInt32 action, UInt32 uParam, String vParam, UInt32 winIni);

private static readonly UInt32 SPI_SETDESKWALLPAPER = 0x14;
private static readonly UInt32 SPIF_UPDATEINIFILE = 0x01;
private static readonly UInt32 SPIF_SENDWININICHANGE = 0x02;

static public void SetWallpaper(String path)
{
RegistryKey key = Registry.CurrentUser.OpenSubKey(@"Control Panel\Desktop", true);
key.SetValue(@"WallpaperStyle", 0.ToString()); // 2 is stretched
key.SetValue(@"TileWallpaper", 0.ToString());

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

[STAThread]
static void Main()
{
// path
string imgWallpaper = @"C:\Windows\Wallpaper.jpg";

// verify
if (File.Exists(imgWallpaper))
{
SetWallpaper(imgWallpaper);
}
}

}
}

 

Notes

RegistryKey.OpenSubKey Method