如何使用Power-Shell在PowerPoint中应用默认主题

Question

I've been asked at work to make sure everyone has the same default theme on their PowerPoint application so that everyone is uniform and compliant. Problem is i dont know how but i know Power-Shell can do that for me. I've started on a good tip but this script did not work for me.

Add-type -AssemblyName office
$Application = New-Object -ComObject powerpoint.application
$application.visible = [Microsoft.Office.Core.MsoTriState]::msoTrue

$themePath = "C:\Users\emp\AppData\Roaming\Microsoft\Templates\Document Themes\Theme1.thmx"
$path = "C:\Users\emp\AppData\Roaming\Microsoft\Templates\Document Themes"
Get-ChildItem -Path $path -Include "*.ppt", "*.pptx" -Recurse |
ForEach-Object {
 $presentation = $application.Presentations.open($_.fullname)
 $presentation.ApplyTemplate($themePath)
 $presentation.Save()
 $presentation.Close()
 "Modifying $_.FullName"
} 

$application.quit()
$application = $null
[gc]::collect()
[gc]::WaitForPendingFinalizers()

Can anyone shed any light on how to change the default theme using powershell? Any help would be greatly appreciated!

Answer 1

You don't say what version of PowerPoint you are using. Every version is a bit different than the previous one, even down to who you'd do stuff via the Object Model.

In general the code you are using should solve you use case (which looks like you leveraged from here: PowerShell 101 blog or from here: Hey, Scripting Guy! How Can I Customize Microsoft PowerPoint Presentations ), but you are not saying that you are having any errors in what you are using. So what do you mean by this?

I've started on a good tip but this script did not work for me.

I am not sure why you feel PowerShell is the option to do this. Users would still have to run it for the changes to happen, or the user could just set this themselves natively in PowerPoint.

In PP2K16 they just do this:

1. Launch PPT
2. Use File> New from Template
3. Select your template to create a new presentation
4. Go to the Design tab
5. Expand the Themes Gallery
6. Select the Save Current Theme command
7. Name the Theme file & click Save
8. In the Themes Gallery, right-click your thumbnail & select Set as Default Theme

Sure, you could script these steps, but there is no way to block a user from using some other template they downloaded or created, modifying the template you just set or that are not already part of PowerPoint by default.

Simply put, you cannot technically force a user to use a given template in PowerPoint. There is no setting in MSOffice / PowerPoint which allows that.

This sounds like you are trying to use technology to solve a user habit issue. That' s really not a thing. If you org has a standard, and users fail to comply, or work to circumvent it, then that is an HR issue.

You can delete all existing templates and copy only the template you want to the default folders and use GPO to set the default. Again this still does not stop user from adds or modifications.