Know if game started up by UE editor or by an executable

Hey,

I need to know at runtime if my game has been started up by the Unreal Engine Editor or by a built executable. Is this possible (blueprint or C++)?

Thanks in advance

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Thank you! As a sidenote, the Build Configuration must be set to “Shipping” for this to work.

That’s one serious limitation… Thanks for sharing and not hoarding that nugget.
Its been a while, but I wonder if this still works to cover the other use cases???