[Lazarus] Property TComponent.Tag change

Michael Van Canneyt michael at freepascal.org
Tue Nov 23 21:24:35 CET 2010


To remain compatible with the upcoming Delphi 64-bit release, I've changed
the 'Tag' property type from Integer -> PtrInt.

The practical upshot from this is that you can store a pointer in it on all platforms.
(a widespread abuse of the Tag property).

This potentially breaks some existing code if you rely on Tag having a size of 4 bytes.

If you do not rely on this, it should not break any code. If it does, I'd be interested
in hearing about it so we can provide workarounds on the website.


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