Interesting tech note about how 10.4 handles screen refreshes
differently. One wonders, how does REALbasic handle this?
http://developer.apple.com/technotes/tn2005/tn2133.html
"Mac OS X 10.4 introduces a new behavior of coalescing updates that
enables Quartz to more efficiently update the frame buffer during
each display refresh. In addition to increasing system efficiency,
Coalescing updates improved visual consistency and eliminates
"tearing" during scrolling and animation. To coalesce updates, the
Quartz window server composites all window buffers into a single
offscreen frame buffer before flushing it to the screen. When your
application issues a flush command, the system doesn't actually flush
that content until the next available display refresh. This allows
all updates for multiple applications to happen at the same time.
Window server operations (window resize or move, for example) are
handled in the same manner—coalesced into a system-wide screen update."_______________________________________________
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