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Date Posted: 11:06:53 10/06/01 Sat
Author: Michel
Subject: Re: TImageTransfrorm
In reply to: Konstantin Rudenko 's message, "TImageTransfrorm" on 19:25:13 10/05/01 Fri


Hi Konstantin,

No problem. I will make TImageTransform.Create virtual in the next release.

Best regards,

Michel

>I wrote my procedure for making transformations and
>send class as parametr. Then in procedure I use code
>like this:
>
>TTransformClass = class of TImageTransform;
>
>procedure MakeTrasform(TransformType :
>TTransformClass; Param : Variant);
> var
> Transform : TImageTransform;
>...
>
>begin
>...
> try
> Transform:=TransformType.Create;
> if Assigned(Transform) then
> begin
> Transform.OnProgress:=OnTransformProgress;
> Transform.Apply(Graphic);
> end;
>...
>
>for calling this procedure just:
>
>...
> MakeTrasform(TNegativeTransform,Null);
>...
>
>But. TImageTransform han't Create constructor and all
>descendants has Create as static method, so in
>MakeTransform actual Create for transform class not
>called, called TObject.Create.
>
>Can it be added in TImageTransform class
>constructor Create; virtual;
>
>in all other Transorm classes
>constructor Create; override;
>
>
>Thanks.
>Konstantin

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