Am 30.06.2022 um 15:11 schrieb Mattias Gaertner via lazarus:
Maybe instead of the GraphicClass.ClassName the first extension can be
written.
That means, that an old IDE cannot read the graphic.
This will break Delphi compatibility, i.e. forms with an image in which
the Picture has been loaded by Delphi will not be readable by Lazarus
any more, and vice versa. Just checked again the signature that Delphi
writes to the begin of the Picture.Data: it's the class name, not the
extension.
Or the vampyrlib defines
type
TPortableNetworkGraphic = class(TImagingPNG);
and registers that in TPicture.
Yes, that might be a solution at first sight. But I don't know what
happens when a project requires Vampyre (i.e. registers this new
TPortableNetworkgraphic), but a unit has only the ordinary graphics unit
in its uses clause, i.e. accesses the old TPortableNetworkGraphic.
--
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