Addons Collection
Represents the set of installed add-ons known to an Application object.
Version Information
Version Added: Visio 4.0
Remarks
To retrieve an Addons collection, use the Addons property of an Application object.
The default property of an Addons collection is Item.
Installed add-ons are those Microsoft Visio finds in its Addons or StartUp paths, those that were installed during the initial setup of Visio, those you have installed by using a Microsoft Windows Installer package, or those that other add-ons have dynamically installed by using the Add method of the Addons collection.