Identification of Trasparent color

Hi all,
Can anybody tell me how to find given color is transparent or not?

$image=imagecreatefrompng("gans.png"); //transparent png image
$bcolor_at = ImageColorAt ($image,$i, $j);

I am using ImageColorAt function to get color at specified point ,now I just want to conform that "$bcolor" is trasparent color or istruecolor?


Please help me in this situation.
Thanks in Advance.

-Gans

$bcolor is truecolor not a transperant color.

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suresh

But Suresh,at given position pixel may be of transparent color no?
if we have provided x and y co-ordinates of image where there is transparency
what "ImageColorAt" function will return?

Thanks,
Gans

If you have provided x and y co-ordinates of image where there is transparency then you got the color code either "Gray" or "White". Because you are using "ImageColorAt" function, it returns only the image colors. Not a Background color.

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suresh

ok..thank you very much..