Re: Drawing from secondary thread erases resize corner in window?
Re: Drawing from secondary thread erases resize corner in window?
- Subject: Re: Drawing from secondary thread erases resize corner in window?
- From: Ron Fleckner <email@hidden>
- Date: Fri, 29 Feb 2008 09:16:19 +1100
On 29/02/2008, at 8:31 AM, Nate Weaver wrote:
On Feb 28, 2008, at 3:18 PM, Hank Heijink wrote:
On Feb 28, 2008, at 2:56 PM, Nate Weaver wrote:
Interesting... I hadn't thought of that. Don't I have to add
another timer to the NSDefaultRunLoopMode though? If I have to
chose between having two timers on the main thread that
alternate, or one on a secondary thread, I think I'll go with
the extra thread.
I don't believe so; I've used it in an app of my own with a
single timer to avoid the same issue you're having, with no
apparent ill effects.
That's not my experience. If I just add a timer for the
NSEventTrackingRunLoopMode, the only time that timer fires is when
the run loop is in event tracking mode, which is what I would
expect. In the NSDefaultRunLoopMode, that timer doesn't fire at
all. Are you doing something somewhere else to make this happen,
or am I missing something?
How did you create the timer? Via
+scheduledTimerWithTimeInterval:... or +timerWithTimeInterval:... ?
If you use the latter, you'll have to add it to
NSDefaultRunLoopMode yourself. I just do something like:
myTimer = [[NSTimer scheduledTimerWithTimeInterval:1.0 target:self
selector:@selector(doTimerStuff:) userInfo:nil repeats:YES] retain];
[[NSRunLoop mainRunLoop] myTimer forMode:NSEventTrackingRunLoopMode];
and it works during both modes (the retain there probably isn't
necessary in the general case, either).
Hank, I can confirm this is true using
+scheduledTimerWithTimeInterval: and then adding the timer to the
NSEventTrackingRunLoopMode. No problems running the timer whether
events occur or not.
Ron
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