Choose Add-In Options, Visual Studio Add-In Wizard

This page lets you specify certain options for your add-in.

Options

Would you like to create a UI for the user to interact with your add-in?
When you select the Yes check box, the Add-In Wizard creates a default toolbar button (with a smiley-face icon) that, when clicked, launches your add-in, unless it is already set to load on environment startup. If you do not select this check box, then you must start your add-in through the Add-In Manager and you must put code in the OnConnection method to make the Add-in perform tasks after it loads.
You can fine tune when your add-in loads:
This lets you specify two add-in behavior options: modal UI and add-in startup.
- The first check box, when selected, specifies that your add-in never displays a modal dialog box — that is, a dialog box that interrupts program execution for user input, making it safe for unattended program execution or command-line build operations.
- The second check box, when selected, specifies that the add-in starts automatically when the environment starts.
You can also program your add-in to perform either way, depending on how it is loaded. When the integrated development environment (IDE) loads an add-in, it is advised of the connection mode. Your add-in could launch UI in its OnConnection method when it is loaded normally, or it can avoid that UI when it is loaded for a command-line build operation.