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Date Posted: 16:14:27 04/08/01 Sun
Author: Timo Meier
Subject: Re: Error in OnZoomChange event???
In reply to: Michel 's message, "Re: Error in OnZoomChange event???" on 08:26:17 04/07/01 Sat

IT WORX!

Thanx

>
>Hi Timo,
>
>Indeed when changing fractional zoom quantities the
>OnZoomChange was not changed when going from a
>fractional to a integral value. Here are the changes
>necessary to correct this:
>
>1. Add an FLastZoomPercent data member in
>TImageScrollBox
> FZoomPercent : Single;
> FLastZoomPercent : Single; <-- add this line
>
>2. Modify .SetZoomPercent
>
> if FSourceGraphic.IsEmpty or (InPercent <= 0.1)
>then
> Exit;
>
> FLastZoomPercent := FZoomPercent; <-- add this line
> FZoomPercent := InPercent;
>
>3. In .Redraw, near RecalcZoom, change the code as
>below and remove the OldZoom variable
> in the var section of the method.
>
>
> { MB Mar 02, 2000. Move outside of RedrawBW and
>RedrawNotBW.
> MB Apr 04, 2001. Change triggering of
>OnZoomChange by adding
> the FLastZoomPercent data member }
> RecalcZoom;
> ZoomChanged := (FLastZoomPercent <> FZoomPercent);
> if Assigned(FOnZoomChange) and ZoomChanged then
> FOnZoomChange(Self, FZoomPercent);
> FLastZoomPercent := FZoomPercent;
>
>
>Best regards,
>
>Michel
>
>>Have you found the something?
>>
>>CU
>>Timo

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