Greetings,
I have a question about event flow while tracking the pen in various
circumstances. Say for instance I have a paint program and I'm tracking
the pen while the user draws a line. My inclination is to just have a
tight little "while( penDown )" loop, but the other way to do it would be
to let the normal event flow go on in the background, and respond to
individual penDown, penMove, and penUp events.
Of course there will be some speed difference, but assume that's not
important here. Is there any other good reason to go through the normal
event loop instead of writing a "local" loop?
Similarly, let's say I have a gadget that's sort of like a shuttle
control on a tape deck, that I can use to vary the scroll speed of a
display of some kind as long as the pen is down. It's probably easiest to
write it as gadget that's tightly coupled to the display (with a
callback, say), and again to keep the pen tracking loop "local." But
again, I could go through the main event loop instead. Should I?
Perhaps this is more a philosophical/style question than one with a clear
cut answer, but I'm curious what the experienced folks have to say about
it.
Thanks!
Dave Johnson
