Bug in tags in TALDynamicControl

[Spelt]

Hi

I think there is a bug in TALDynamicControl.

Seems that it just need to read the FTagFloat field because the SetFloat procedure alters the fTag field. See:

property TagFloat: Double read GetTagFloat write SetTagFloat; // [TComponent:published] property TagFloat: Single read FTagFloat write FTagFloat;

procedure TALDynamicControl.SetTagFloat(const AValue: Double);
begin
  ALMove(AValue, FTag, SizeOf(Double));
end;

[Zeus64]

Hello,

It's was made like this to economize 8 bit (to not add a "FTagFloat: Double" member)
so Tag and TagFloat share the same field.

If you need to store more data (ie a int64 tag and an double tagfloat at the same time), then you can use the tagObject

[Spelt]

Ok but it sounds like over-optimalization and people will not understand. When the Tag is set to value x, and the value of TagFloat is set to y then it will change the Tag value.

Using TagObject is a work around which involves creating and freeing objects when only passing 2 values.

I hope you reconsider.