通过设置注册表中Wallpaper键的值来改变桌面

环境说明

复现过程

如下是对注册表可以进行增删改查的脚本

function Operate-Registry {

<#
.DESCRIPTION 
    Operate-Registry is a API for operate registry. 

.PARAMETER Mode
    Three mode:Get, New, Update, Remove
    Mode Get: Get the value of specific property about registry.
    Mode New: Create a new property for specific registry.
    Mode Update: Update specific property's value for registry.
    Mode Remove: Remove specific property for registry.

.PARAMETER SubKey
    The registry key

.PARAMETER Name
    The property's name of registry key

.PARAMETER Value
    The property's value of registry key

.PARAMETER SpecSituation
    For Special Situation, Like procedure for add startup, following is the support instance.
    - "RunStartUp"

.EXAMPLE
    . "$pwd/generic_operate-registry.ps1";Operate-Registry -Mode "New" -SubKey "HKCU:\Software\ScriptingGuys\Scripts" -Name "Version" -Value "1"
    . "$pwd/generic_operate-registry.ps1";Operate-Registry -Mode "Update" -SubKey "HKCU:\Software\ScriptingGuys\Scripts" -Name "Version" -Value "2"
    . "$pwd/generic_operate-registry.ps1";Operate-Registry -Mode "Get" -SubKey "HKCU:\Software\ScriptingGuys\Scripts" -Name "Version"
    . "$pwd/generic_operate-registry.ps1";Operate-Registry -Mode "New" -SpecSituation "RunStartUp" -Name "SamVs" -Value "C:\Windows\System32\calc.exe"
    . "$pwd/generic_operate-registry.ps1";Operate-Registry -Mode "Update" -SpecSituation "RunStartUp" -Name "SamVs" -Value "C:\Windows\System32\calc.exe"
    . "$pwd/generic_operate-registry.ps1";Operate-Registry -Mode "Remove" -SpecSituation "RunStartUp" -Name "SamVs"
    
#>



    
    [CmdletBinding()]
    param (
        [Parameter(Mandatory = $False)]
        [string]
        $Mode,

        [Parameter(Mandatory = $False)]
        [string]
        $SubKey,

        [Parameter(Mandatory = $True)]
        [string]
        $Name,

        [Parameter(Mandatory = $False)]
        [string]
        $Value,

        [Parameter(Mandatory = $False)]
        [string]
        $SpecSituation
    )

    # add shortcut for specific program
    if ($Mode -eq "New") {

        if ($SpecSituation -eq "RunStartUp") {
            $SubKey = "HKCU:\Software\Microsoft\Windows\CurrentVersion\Run";
        }

        New-ItemProperty -Path $SubKey -Name $Name -Value $Value;

    } elseif ($mode -eq "Update") {

        if ($SpecSituation -eq "RunStartUp") {
            $SubKey = "HKCU:\Software\Microsoft\Windows\CurrentVersion\Run";
        }

        Set-ItemProperty -Path $SubKey -Name $Name -Value $Value;

    } elseif ($Mode -eq "Get") {

        $Result = (Get-ItemProperty -Path $SubKey).$Name | Out-String;
        Write-Output $Result;

    } elseif ($Mode -eq "Remove") {

        if ($SpecSituation -eq "RunStartUp") {
            $SubKey = "HKCU:\Software\Microsoft\Windows\CurrentVersion\Run";
        }

        Remove-ItemProperty -Path $SubKey -Name $Name

    } else {

        Write-Output "Please Input Correct Parameter";
    }
}

通过上述脚本修改注册表

• 运行如下powershell脚本：

. "$pwd/generic_operate-registry.ps1";$origin_desktop_path = Operate-Registry -Mode "Get" -SubKey "HKCU:\Control Panel\Desktop" -Name "Wallpaper" | Out-String;

. "$pwd/generic_operate-registry.ps1";Operate-Registry -Mode "Update" -SubKey "HKCU:\Control Panel\Desktop" -Name "Wallpaper" -Value "$pwd/demo.jpg";

. "$pwd/generic_operate-registry.ps1";$modify_deskop_path = Operate-Registry -Mode "Get" -SubKey "HKCU:\Control Panel\Desktop" -Name "Wallpaper" | Out-String;

• 检查是否运行成功：