Yeah !!! It works
Thanks Morgan
Arnaud
"Morgan Hughes" <[EMAIL PROTECTED]> a écrit dans le message de news:
[EMAIL PROTECTED]
> On Thu, 21 Nov 2002, Arnaud wrote:
>
> > Hi everyone,
> > I'd like to use "imagecreatetruecolor" function in order to "cut and
paste"
> > JPG files on a white background. It seems not to work correctly.
>
> This one bit me when I started working with GD 2.x as well. Simply draw
> a filled rectangle over your entire canvas in the color you want:
>
> <?
> $im=imagecreatetruecolor(50,50);
> $COULEUR_BLANC=imagecolorallocate($im,255,255,255);
> imagefilledrectangle($im,0,0,49,49,$COULEUR_BLANC);
> header ("Content-type: image/png");
> ImagePNG($im);
> imagedestroy($im);
> ?>
>
> The reason seems to be that when you create an indexed-color image
> (imagecreate()) gd sets all pixels to index 0, and when you allocate
> your first color, that's index 0. Thus all background pixels magically
> become that color.
>
> When you use imagecreatetruecolor(), it sets all the pixels to black,
> and you have to explicitly draw them in to get them white.
>
> --
> Morgan Hughes
> C programmer and highly caffeinated mammal.
> [EMAIL PROTECTED]
> ICQ: 79293356
>
>
>
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