ok, I've begun to teach myself Obj-C, and so far, PB and Interface builder ROCK!!!
Anyway, I've figured out how to modify the DotView program to include another slider that changes the width of the balls (hey, its a start) and ive made a button that calls a function "doThis"...
what I am asking, is that when i call doThis, within a for loop, i want to increment the height of the ball, call it variable y. so i have this:
- (void)doThis
id)sender {
for(y = 10 ; y < 100 ; y++) {
//PAUSE FOR A HALF A SECOND
[self setNeedsDisplay:YES];
}
}
how can i pause it for half a second every cycle so that i can see the height changing gradually?
Thanks for your help
Top
