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Are there any side effects to changing a class hierarchy’s ancestor from TObject to TInterfacedObject so that I can implement interfaces further down the inheritance chain?
I’ve programmed in Delphi for several years but never encountered interfaces. I became accustomed to using them in other languages. Now that I’m involved in a Delphi project again I’d like to start taking advantage of them but I know they work a bit differently than in Java or C#.
If you already have existing code using the class you will probably have to modify a lot of it to keep references to interfaces instead of object instances. Interfaces are reference counted and released automatically, as a result, any reference to the implementor instance will become an invalid pointer.