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pixelgrabber class

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Can anyone please explain how to use this class to take a gif and set a certain color to transparent. A code example would be very useful. Also whats the png file type? is it used by programs such as Photoshop? Any reply would be greatly appreciated.

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PNG is just an image format. It''s similar to GIF, but not covered by any patent and generally produces smaller images. Photoshop can read and write them. Use Google for more information.

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