Allow me to return some good advice someone gave me a few weeks ago:
Before you delve into multithreading, consider running your window as
a "modal session". Poorly documented, no sample code, but simple if
you can get it to work. Start by reading the documentation for:
-[NSApplication beginModalSessionForWindow:]
It's really weird because the NSModalSession is a struct, but just go
along with it. Another hint: Use the strangely-named method:
-runModalSession:
when you want to update your view.
I think, though I haven't tried, a similar effect can be had by sendign the
runUntilDate message to the application thread's run loop. If you pass in a
date that is a suitable short time from now, say 1/60th of a second, I think
that allows the UI to be updated and prevents the spinning wheel o' death.
YMMV though: Never tried it; just infered from the documentation. Couldn't
find the one that reviewed the cocoa event system though.
