Re: NSCursor category
Re: NSCursor category
- Subject: Re: NSCursor category
- From: Yann Bizeul <email@hidden>
- Date: Wed, 30 Jun 2004 09:20:39 +0200
>
[...]
>
However, I want to do some other things such as hover text, but
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"addTrackingRect:owner:userData:assumeInside:"; cannot be used the same
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way, as there is no "resetTrackingRects" or equivalent method as far
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as I can see. Instead the tracking rects have to be individually
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removed when the NSView changes shape which is a pain because I don't
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want to keep track of them manually.
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>
So firstly, am I missing something with tracking rects? Why are they
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so much more difficult to use than cursor rects?
You are right, cursorRects are easier to work with than trackingRect
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@implementation NSCursor (NotificationCursor)
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+ (NSCursor *)notificationCursor
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{
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NSCursor *cursor = [NSCursor resizeLeftRightCursor];
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[cursor setOnMouseEntered:YES];
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return cursor;
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}
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- (void)mouseEntered:(NSEvent *)event
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{
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NSLog(@"mouseEntered");
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// do extra stuff here
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}
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@end
From Apple's docs : (NSCursor/mouseEntered:)
"This message is automatically sent to the receiver when the cursor
enters a tracking rectangle owned by the receiver..."
What I understand from this, is that this method is called for a
trackingRect, not a cursorRect, and only if the owner is your cursor.
Is this the case ?
Personaly, I always use resetCursorRect in my view to play with
trackingRect *and* cursorrect. Because this method is always called
when rects need to be reset, you can do your stuff here. The only thing
to not forget, is keep a reference for each of your trackingRect,
delete them all in resetCursorRect, and re create them after this.
Any advice is welcome !
--
Yann Bizeul - yann at tynsoe.org
http://projects.tynsoe.org/
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