# encoding: ascii
# api: csharp
# title: Set-Wallpaper (CTP3)
# description: Set-Wallpaper lets you set your windows desktop wallpaper. It requires PInvoke and I wrote it using PowerShell 2’s Add-Type, although it could be done in v1 using the JIT code generation tricks Lee Holmes has mentioned in the past …
# version: 0.5
# type: script
# author: Joel Bennett
# license: CC0
# x-poshcode-id: 4622
# x-archived: 2016-06-19T04:08:45
# x-published: 2016-11-19T06:51:00
#
# Updated for CTP3
# Made it run as a script instead of a function.
#
#requires -version 2.0
## Set-Wallpaper - set your windows desktop wallpaper
###################################################################################################
## Usage:
## Set-Wallpaper "C:\Users\Joel\Pictures\Wallpaper\Dual Monitor\mandolux-tiger.jpg" "Tile"
## ls *.jpg | get-random | Set-Wallpaper
## ls *.jpg | get-random | Set-Wallpaper -Style "Stretch"
###################################################################################################
## History:
## v0.5 First release (on #PowerShell@irc.freenode.net)
## v1.0 Public release (http://www.poshcode.org/488)
## - Added Style: Tile|Center|Stretch
## v1.1 (http://poshcode.org/491)
## - Added "NoChange" style to just use the style setting already set
## - Made the Style parameter to the cmdlet optional
## v2.0 This Release
## - Updated for CTP3, and made it run as a script instead of a function.
###################################################################################################
[CmdletBinding()]
Param(
[Parameter(Position=0, Mandatory=$true, ValueFromPipelineByPropertyName=$true)]
[Alias("FullName")]
[string]
$Path
,
[Parameter(Position=1, Mandatory=$false)]
[Wallpaper.Style]
$Style = "NoChange"
)
BEGIN {
try {
$WP = [Wallpaper.Setter]
} catch {
$WP = add-type @"
using System;
using System.Runtime.InteropServices;
using Microsoft.Win32;
namespace Wallpaper
{
public enum Style : int
{
Tile, Center, Stretch, NoChange
}
public class Setter {
public const int SetDesktopWallpaper = 20;
public const int UpdateIniFile = 0x01;
public const int SendWinIniChange = 0x02;
[DllImport("user32.dll", SetLastError = true, CharSet = CharSet.Auto)]
private static extern int SystemParametersInfo (int uAction, int uParam, string lpvParam, int fuWinIni);
public static void SetWallpaper ( string path, Wallpaper.Style style ) {
SystemParametersInfo( SetDesktopWallpaper, 0, path, UpdateIniFile | SendWinIniChange );
RegistryKey key = Registry.CurrentUser.OpenSubKey("Control Panel\\Desktop", true);
switch( style )
{
case Style.Stretch :
key.SetValue(@"WallpaperStyle", "2") ;
key.SetValue(@"TileWallpaper", "0") ;
break;
case Style.Center :
key.SetValue(@"WallpaperStyle", "1") ;
key.SetValue(@"TileWallpaper", "0") ;
break;
case Style.Tile :
key.SetValue(@"WallpaperStyle", "1") ;
key.SetValue(@"TileWallpaper", "1") ;
break;
case Style.NoChange :
break;
}
key.Close();
}
}
}
"@ -Passthru
}
}
PROCESS {
Write-Verbose "Setting Wallpaper ($Style) to $(Convert-Path $Path)"
$WP::SetWallpaper( (Convert-Path $Path), $Style )
}