I'm trying to help a developer who is trying to render Unicode text on the Mac, using ATSUI. His problem is that the rendering should happen progressively as parts of the document become available, but ATSUI seems to assume that the entire document should be available before rendering starts. His solution has been to make a 'Unicode session' for every little piece of text that is to be rendered, but that solution has led to unacceptable performance, since opening and closing 'Unicode sessions' is not a light-weight operation. Is there anyone here who has run into this problem before and can suggest possible ways to approach it? We could accumulate more text before rendering, but that would hurt progressive display, and doesn't sound like a very good solution. --Lars M.
