How to override functions in Inno Setup?

Question

I have a few install scripts, with almost the same functionality. I separated same functions to include file with common code, but from time to time I need to override some of those.

Unfortunately, override at the end as in Delphi doesn't help:

function NextButtonClick(CurPageID: Integer): Boolean; override;

Answer 1

That is not possible. One thing is that e.g. the NextButtonClick which you mentioned is meant to be the event method whose you do not override; the other is that Inno Setup Pascal Script doesn't support method overriding as such.

The only reliable workaround I can think of is to RY (from DRY), by separating event methods from your common code.