Detecting if a PNG image file is a Transparent image?

Posted by kenny on Stack Overflow See other posts from Stack Overflow or by kenny
Published on 2010-04-02T22:31:26Z Indexed on 2010/04/03 1:33 UTC
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I am looking for a way to quickly determine if a PNG image has transparent features. Does anyone one know a simple way to detect this?

UPDATE: OK, is there a less complicated way then to pull out the PNG specification and hacking code?

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