![]() HKEY_CURRENT_USER\Software\Microsoft\Office\Excel\Addins\ COM Add-ins used by Excel are registered in the following registry ![]() Registration, a COM Add-in is registered for each Office application in which Registry entries are created for the Add-in. When a COM Add-in is installed on a user's system, Methods of this interface: OnConnection, OnStartupComplete, OnAddinsUpdate, OnBeginShutDown, and OnDisconnection. All COM Add-ins must implement each of the five COM Add-in functions cannot be directly called from cell formulasĪ COM Add-in is an in-process COM server (an ActiveXĭLL) that must implement the IDTExensibility2 interface. Specific to Excel such as opening or closing workbooks or entering data on COM Add-ins are typically used to automate Excel in response to aĬlick of a CommandBar button, a form or dialog box, or some other event COM Add-ins COM Add-ins present the developer with a way to extend theįunctionality of Office 2000, Office XP, Office 2003 and Office 2007 applications forĬustom tasks.
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