> I have an application that I'm working on that will run either Single User
> or Multi-User and its licensing is different in these modes. In
> multi-user
> we are using a semi-3 tier approach for the application, but in
> single user
> its just two tier (app + local FB database).

Then surely your users need to declare some difference in their setup to
achieve one of these 2 states... e.g. a servername:drive:\path\filename.ext
or servername:alias Vs drive:path\filenbame.ext (i.e. missing servername)
connection string will determine which licensing state your app is running
in.
there doesn't seem to be any need for what you are thinking of below.

Alan

>
> I'm thinking that FB Embedded for the single user is perfect, but if the
> user wishes to run the application with a network database
> server, they will
> need FBCLIENT.DLL installed for network access. In multi-user mode, there
> are also a number of services provided by a 'server' application that we
> have developed that are also required, but the client
> communicates directly
> with the database server in multi-user configuration.
>
> I need a way to detect if the user is running the app (Delphi 7) against a
> FB Embedded database or against a FB network database. Are there
> any calls
> that can be made to the client DLL that will tell me which client DLL is
> being used so that we can detect this on startup?
>
> Myles