> Michael Van Canneyt escreveu: >> >> >> On Thu, 20 May 2010, Florian Klaempfl wrote: >> >>> I've no opinion if it's usefull to add or not, I use TPersistent+ too >>> little but my concern is: if I create an observer for an instance, I'd >>> expect to get notified about every change to the instance. But I cannot >>> see how this will be achieved, no existing class is prepared for this? >> >> Not every change. What you get notified about is defined by the class >> that uses the observable interface. TStrings will notify you of >> additions/removals, and TList/TObjectList as well. > > It will send some kind of info (like index or address of the object) to > know what and where the item was added or removed?
Yes. > > Can the same Obsever observe (:-D) more than of one type of object? e.g. > i want to observe a object list for adding or removals, but also want to > know if one of the child objects changed. Yes. You can observe any object that will implement the IFPObservable interface. Michael. _______________________________________________ fpc-devel maillist - fpc-devel@lists.freepascal.org http://lists.freepascal.org/mailman/listinfo/fpc-devel
