>>>>> "Glen" == Glen W Mabey <[EMAIL PROTECTED]> writes:
Glen> I'm a bit confused as to where the exception is actually
Glen> getting raised. I suppose the renderer's write_png method
Glen> must be in C?
Glen> I implemented a tempfile solution, but I'm surprised that
Glen> the cStringIO doesn't already work.
Glen> <fellowsophical_question>
Glen> Should it?
Glen> </fellowsophical_question>
It should and I've looked at it but couldn't figure it out. The relevant
method is
RendererAgg::write_png in src/_backend_agg.cpp. Someone should pull
up some PIL code (which I think supports this) and figure out how it
is done. The png method I am using uses a FILE* pointer -- I've
posted on python list how to get a FILE* from cStringIO but got no
help. There may be a more-better-different libpng method that can
work with some other interface.
JDH
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