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Re: addTrackingRect fails?
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Re: addTrackingRect fails?

  • Subject: Re: addTrackingRect fails?
  • From: Stéphane Sudre <email@hidden>
  • Date: Thu, 28 Jun 2001 12:36:51 +0200
On jeudi, juin 28, 2001, at 07:21 AM, Gregory Weston wrote:

Are there any preconditions on creating tracking rectangles? I've got a
view that attempts to create several in its initWithFrame: method, but
the return from every call to addTrackingRect... is 0 (which seems
wrong) and my mouseEntered and mouseExited methods never get invoked
(which seems to support the notion of wrong-ness). Any hints?

[self addTrackingRect: someRect owner:self userData:NULL assumeInside:NO]

IIRC you can't add a tracking rect in the initWithFrame: method.

There is also a problem which is not described in the NSView documentation: when a view is removed from its superview, the tracking rect is lost. This is a bit problematic when you have a NSTabView and some view inside that have a tracking rect.

  • Follow-Ups:
    • Re: addTrackingRect fails?
      • From: Greg Titus <email@hidden>
References: 
 >addTrackingRect fails? (From: Gregory Weston <email@hidden>)

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