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Re: why NSTrackingArea doesn't work?
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Re: why NSTrackingArea doesn't work?


  • Subject: Re: why NSTrackingArea doesn't work?
  • From: Ken Thomases <email@hidden>
  • Date: Wed, 22 Jun 2011 20:07:40 -0500

On Jun 22, 2011, at 7:41 PM, Conrad Shultz wrote:

> On 6/22/11 5:04 PM, Nick wrote:
>>  NSTrackingArea* trackingArea = [[NSTrackingArea alloc] initWithRect:[self
>> frame] options: (NSTrackingMouseEnteredAndExited |   NSTrackingActiveAlways)
>> owner:self userInfo:nil];
>
> Don't use [self frame]... that is in the superview's coordinate system,
> not the tracking area's view's coordinate space (which is expected).
>
> Use [self bounds] instead; depending on the absolute position of your
> view this might make a HUGE difference.

I strongly recommend considering use of NSTrackingInVisibleRect, too.  If your view changes windows or moves within its window, this will make things a lot simpler.  It can be the wrong thing in rare cases, but I'd be surprised if you need one of those.

Regards,
Ken

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References: 
 >why NSTrackingArea doesn't work? (From: Nick <email@hidden>)
 >Re: why NSTrackingArea doesn't work? (From: Conrad Shultz <email@hidden>)

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