> > I have binary image blobs stored in a database and want to interpret
> > them with Fl_Shared_Image, but this class expects to read from a file.
> > As a quick hack currently I write the blob to a temporary file and
>
> I've had similar problem with png files stored in my resource files.
>
> I posted here a full & working listing here, two days ago.
> Title is: "Decoding png already in memory"
> Message-ID: <[EMAIL PROTECTED]>


thanks, and thankyou Ian MacArthur for pointing out jseb's thread. I have 
integrated the class into my program with no problems. Ideally I would prefer a 
solution for any image type, but converting everything to png's is sufficient.

jseb, I'm curious how you figured out how to work with the libpng I/O 
callbacks. I have looked at the documentation on the libpng site before 
(http://www.libpng.org/pub/png/libpng-1.2.5-manual.html#section-5) and knew I 
had to use the png_set_read_fn() but wasn't clear how the function pointer was 
meant to manipulate png_structp. So it was good to read your code to see what 
it meant.
Did you rely on this documentation or do you have another resource?

thanks again, Richard
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