Microsoft Excel Notification from Add-on

I am building an add-on for Microsoft Excel. I would开发者_Python百科 like to see a notification popping up displaying name of the company whenever the add-on is added to MS Excel.

I tried using xlcAlert, But it demands user interaction (The user needs to click "OK").

I would like to use some banner, which comes for a second or two and then banishes away.

Please guide for the same.

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How about a form which loads when the add-in does, and then unloads after a set interval?