Presentation with embedded restricted fonts doesn't open correctly from VSTO Add-in

Sergey Sokur 1

When I open presentation with restricted embedded fonts(that I don't have installed) using VSTO add-in it opens it in read-only mode without asking anything, usually there is a dialog with the option to replace embedded fonts to open document in edit mode. Is there a way to force it using Microsoft.Office.Interop.PowerPoint?

Eugene Astafiev 891 Reputation points

2022-04-26T16:13:49.407+00:00

What code do you use for opening a PowerPoint presentation?

Do you get the same results if you do the same steps manually?

Sergey Sokur 1

Hey Eugene,

With the code it always opens in read-only mode without asking:

    private readonly Application _application;  
      
    public void OpenPresentation(string filePath)  
    {  
        var presentation = _application.Presentations.Open(filePath, Untitled: MsoTriState.msoTrue, ReadOnly: MsoTriState.msoFalse);  
    }

But with manual steps it gives me the dialog first:

Eugene Astafiev 891 Reputation points

2022-04-28T10:48:31.947+00:00
You are passing false to open the file with removed restricted fonts:

ReadOnly: MsoTriState.msoFalse

If you need to preserve fonts and open the file in the read-only mode you need to pass true.
Sergey Sokur 1 Reputation point

2022-04-29T07:11:40.693+00:00

Hey Eugene,
I tried all possible variants, it simply doesn't work
Sergey Sokur 1 Reputation point

2022-04-29T07:35:10.667+00:00

This makes no sense to me, since it is opens in read-only mode when I set read-only : false.

Also I want file to open in write-mode as it says in the code or if user has missing embedded restricted fonts then make it based on users input like it does it when I open it with Powerpoint.
Sergey Sokur 1 Reputation point

2022-05-11T08:46:45.087+00:00

@Eugene Astafiev do you need any other information to report it as a bug to MS team?

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Presentation with embedded restricted fonts doesn't open correctly from VSTO Add-in

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