Shoutbox

quote:

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Originally posted by TheBlasphemer
Does that make sense?

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It does indeed, but that is exactly what you are doing, only, you're not checking to see if it is 'your chunk', you're checking to see if it's any of the mandatory chunks. I've been messing a bit and I've isolated the tEXt chunk together with the header and the 'dwLen' bytes. Up next is isolating only the content of the tEXt chunk and if I can do that I can do it with any chunk. After that I'll have a look at writing chunks.
It's all beginning to make perfect sense now, not all that hard =)

I'm going to have another read about the PNG format, though. For one, I'm interrested in what the capitalisation of the chunk types really means, where abouts you can add chunks and how unknown chunks are handled (will be handled by msn.. hmm.. hope they're not discarted.)
Might try adding a custom chunk, setting it as a DP and having a look at what the other side receives.

Thanks for the assistance TheBlasphemer and CookieRevised.

Edit:
I'd prefer to keep it the way you're handling it, since it allows for easily adding other custom chunks, in case I decide I want to pass some diffrent data in the DP as well; other than my GIF.