set background in windows 11

set-bg.ps1

# Define the path to the new wallpaper
$wallpaperPath = "C:\custom-background.jpg"

# Load user32.dll and define the SystemParametersInfo function
Add-Type @"
using System;
using System.Runtime.InteropServices;
public class User32 {
[DllImport("user32.dll", CharSet = CharSet.Auto)]
public static extern int SystemParametersInfo(int uAction, int uParam, string lpvParam, int fuWinIni);
}
"@

# Set the wallpaper
$SPI_SETDESKWALLPAPER = 0x0014
$SPIF_UPDATEINIFILE = 0x01
$SPIF_SENDCHANGE = 0x02

$flags = $SPIF_UPDATEINIFILE -bor $SPIF_SENDCHANGE
[User32]::SystemParametersInfo($SPI_SETDESKWALLPAPER, 0, $wallpaperPath, $flags)