I am using a COM-Addin in PowerPoint 2013.This add-in does some processing and shows a message (say "Document is going to open") to the user, when the user tries to open any existing presentation.
This addin is working fine with previous versions of PowerPoint. But as PowerPoint 2013 shows the preview of recently opened presentations to the user and in order to do so, it needs to open the file. The add-in starts processing and the message box is shown, even when we are on the welcome page of PPT 2013 and no document is opened by the user.
I don't want to disable the "Recent Presentation" option. Therefore I was wondering if there is a way to prevent PowerPoint from generating the preview of recent document by changing some setting in registry etc. Or if there is any API which can be used to prevent this behavior of PowerPoint.
Thanks.