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Two questions about Objective-C
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Hey, could anyone give me example code blocks that:
1. Demonstrate how to create an NSTimer that calls a method:
(void)updateImage
every 5 seconds. (Assume that the class that this code is in has a timer variable called “theTimer” declared in the header file.)2. Create and send an AppleEvent: class “aevt”, event ID “quit”, to the Dock.
Thanks.
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Jason Varner
- [ Ignore ]
On 2002-01-27 16:19, spazum64 wrote:
Hey, could anyone give me example code blocks that:1. Demonstrate how to create an NSTimer that calls a method:
(void)updateImage
every 5 seconds. (Assume that the class that this code is in has a timer variable called “theTimer” declared in the header file.)2. Create and send an AppleEvent: class “aevt”, event ID “quit”, to the Dock.
Thanks.
Well, I haven’t done any AppleScript code in ages, but I can post some code demonstrating timers.
This comes from a simple program I wrote to display time in native UNIX format (seconds since epoch) for the billion-second rollover last year. This is the initialization code for the TimeController object:
-(id)init {
clockIsRunning = YES;
theTimer = [NSTimer scheduledTimerWithTimeInterval:1 target:self selector:@selector(updateSecs:) userInfo:NULL repeats:YES];
return self;
}The code sets a global flag to say the clock is on, and then instantiates a timer object to fire every second (withTimeInterval), sending a message to the Timecontroller object (target:self) asking to update the seconds count (selector:@selector etc…). The userInfo I can’t remember the purpose of userInfo, and repeats:YES ensures that the timer fires every second.
Hopefully, you can adapt that to meet your needs.
Jason
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