Re: NSMenu and RunLoop?
Re: NSMenu and RunLoop?
- Subject: Re: NSMenu and RunLoop?
- From: "Louis C. Sacha" <email@hidden>
- Date: Tue, 1 Jun 2004 18:36:57 -0700
Hello...
You probably want to take a look at the documentation for NSRunLoop.
There's also a CoreFoundation conceptual topic related to CFRunLoop
that has info about NSRunLoop as well.
Specifically, you need to register your timer for the event tracking
mode in addition to the default run loop mode.
So, when you register your timer it would look something like this:
NSTimer *importantTimer = [NSTimer timerWithTimeInterval:1.0
target:self selector:@selector(doSomethingImportant:) userInfo:nil
repeats:TRUE];
[[NSRunLoop currentRunLoop] addTimer:importantTimer
forMode:NSDefaultRunLoopMode];
[[NSRunLoop currentRunLoop] addTimer:importantTimer
forMode:NSEventTrackingRunLoopMode];
In addition to menu tracking, this also applies to getting timers to
fire during drag and drop operations, mouse dragging, and other
special event tracking loops.
Make sure you don't do too much heavy processing when the timer
fires, or you could affect the "feel" of the menu tracking or other
events, although if it's not causing problems when it is running
normally during the default run loop mode it should probably be okay
(but keep in mind that when the run loop is running in event tracking
mode, generally event processing is happening at a higher rate than
normal).
Hope that helps,
Louis
Hi! I sure hope this is easy for someone.
I have an application that has NSTimers going off for processing. I
just noticed that when a NSMenu is clicked on (showing the available
NSMenuItems underneath it), the application halts. What's the
easiest way for me to get it so that the NSMenu's don't stop/halt my
applicaiton runLoop?
What was interesting is that I could click on a NSMenu and it puts
it in a state where now I can move over the other Menu's and they
will pop down to see them, this is cool; but my app is halted?
Thanks,
Pete Gordon
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