I am trying to create a buffered window and get notified whenever
areas are repainted so that I can also send those areas over the
network to a custom remote bitmap display. I don't want to copy the
complete buffered image on each update as that would be much too slow.
NSView has
Thanks for the CGWaitForScreen tip. I hadn't seen those and will take
a look.
Overriding drawRect on a top level view sounds promising also.
I had thought about overriding setNeedsDisplay on a top level view in
the window, but it wasn't clear that would catch calls to child views.
On May
