[Lazarus] How do Lazarus users handle exceptions in procedures which are running in data modules?

[Frank Church]

How do Lazarus users handle exceptions in procedures which are running
in data modules?

A lot of the guides and examples demonstrate raising exceptions, which
generally display dialogs to the user that an exception has occurred.

But what is the best way to handle them if they occur inside data
modules as they may not have a user interface, or are even not
supposed to have any, but then somehow communicate the exception back
to the user interface is required?

In my view it is either by passing a var parameter to the procedure in
the data module which returns some information about the error, or
changing the procedure into a function and return info about the error
in the result. On the other hand using functions messes up the reading
of the program because it make the return values appear to be the
subject of the computations.

What are the best practices in Lazarus or Delphi with dealing with
this kind of situation? Are there some frameworks for handing this
type of problem?


-- 
Frank Church

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