Apple

I've been playing with an experimental/demo application to get the hang of timers, and

have come across an issue with canceling a performSelector:withObject:afterDelay:.

Nothing too earth shattering, I was just wanting to use a delay before some processing

to give me a chance to test/watch the rest of the user interface, for example:

performSelector_withObject_afterDelay_("startProcessTimer:", "timer started...", 4)

It is a short enough delay, but if I want to cancel it and proceed (by using it in a button

handler, for example), I can't seem to get it to cooperate:

cancelPreviousPerformRequestsWithTarget_(me) -- ???:

I am using other timers, which have an instance I can invalidate, but the cancel gives

me an "unrecognized selector" message no matter what I try to put in as the target,

which for lack of a specific definition of "(id)aTarget" I am assuming to be the same

script object (or application or run loop) that started the delay.

I've found few examples of this (mostly iPhone), but as far as I can tell it should be fairly

straightforward to use. Is this one of those things that needs an ObjC wrapper, or am I

just using it wrong?

Thanks,

Dave