In article <net>,
Gabriel Handford <edu> wrote:
I would strongly suspect that it's done through Quartz, which supports
zooming and transparency. I can't tell you _how_ it's done, though, as
I'm no expert on the subject.
You might take a look in:
The latter link gets you the reference doc that describes the Quartz API
for C / C++ / Objective-C.
-- Bert Sierra