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Date Posted: 07:23:06 10/23/01 Tue
Author: Michel
Subject: Re: incorrect values in a colormap
In reply to: Heiko 's message, "Re: incorrect values in a colormap" on 06:06:03 10/22/01 Mon


Hi Heiko,

Do you have an example of this? Here is to code have used to test the previous problem, and with indices from 0 to 255 reading and writing the palette entries after saving match:

Graphic := TTiffGraphic.Create;

Graphic.NewImage( 2, 2, ifColor16, nil, 0, 0 );

Graphic.PalettePtr^.palPalEntry[0].peRed := 255;

SendInteger( 'Red ', Graphic.PalettePtr^.palPalEntry[0].peRed );

Graphic.SaveToFile(FileName);

Graphic.Free;

Graphic := TTiffGraphic.Create;
Graphic.LoadFromFile(FileName);
SendInteger( 'Red ', Graphic.PalettePtr^.palPalEntry[0].peRed );
Graphic.Free;

Best regards,

Michel

>Hello Michel,
>
>thank you for the entifGr.dcu. I continued the test
>and I found an another little bug.
>
>The result of the following code is 0 although the
>right value is 255. All other values (< 255) are
>correct (!). This problem occurs only with '256 color'
>graphics.
>
> result :=
>thegraphic.PalettePtr^.palPalEntry[n].peRed;
>
>I think it is a similar problem as my last posting.
>
>Best regards
>Heiko

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