On Feb 24, 2011, at 1:23 AM, Graham Cox wrote:
How do you create a CGColorSpaceRef using the DeviceN model? It appears as if
would allow spot colours to be specified, but I can't see how to create such
a colorspace.
I haven't tried this, but I think you have to provide your own DeviceN color
profile to CGColorSpaceCreateICCBased(). Quartz will fall back to the alternate
colorspace that you provide for drawing to the screen but I think the ICC data
and colors should still make it into PDFs.
Again, I haven't tried this myself, this is simply my recollection from having
investigated this pathway in the past.
--
David Duncan
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