Hi Frank,
Nope, at least for add-ins. You have to use the QueryStatus method to set
the menu visible / invisible with the XXXSupported flag

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Best regards,
Carlos J. Quintero
MZ-Tools: Productivity add-ins for Visual Studio
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> Is there a way to hook into the IDE where before a certain context menu
> comes up, an event if fired in my add-in. The purpose is to add/remove my
> custom menu items from the context menu (depending on the situation).
>
> How can I hook this up?