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I notice you didn't answer the question, but no; It makes the code harder to read as you have to think about what Pred does. With "Count-1" there's no doubt. Don't use a feature just because it's new or you've just discovered it.

Pred and Succ best use is when used with enum. LBrushKind := Pred(LBrushKind); replace LBrushKind := TBrushKind(Ord(LBrushKind)-1);

Hmm... It looks like it is using the libss1-1_1.dll supplied with ICS... I was l expecting it to require libeay32. All good now, thanks to everyone who helped out.

The standard windows List-View control, wrapped by the Delphi TListView component does this. The Tile View style is probably what fits your requirements best but unfortunately that isn't directly supported by TListView. Google Delphi LV_VIEW_TILE to find solutions around that.

Please indicate what you mean by "before", e.g. was it a different version of Delphi? Deploying to a device with a different version of iOS, if so, which version(s)? Were your applications deploying the custom fonts? .

I only use Pred rarely with enums. With integers it's worse than N-1. I guess having for-in construction there's not much need in last index

I would like to have List.High or List.HighIndex or List.LastIndex or whatever. Why to write every time -1 when you want the last index?

No. It's pointless verbiage. Use List.Count - 1

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No, the problem is not with delphi, yo can see the full list of default font of the iOS https://developer.apple.com/fonts/system-fonts/ The current default font is Helvetica Neue. If you put a font family name that not exists, the iOS will load the Helvetica Neue font. To avoid install custom font, the best you can do is find a similar default font to use in the iOS

AV is when you access memory not belonging to your process. In this case you just access memory that is being freed but still belongs to the process. If you want array index control, enable range check

Resizing an array to a smaller length doesn't invalidate the other elements. You should have range checking on to catch this error.