Re: Properly handling mouseEntered: events
Re: Properly handling mouseEntered: events
- Subject: Re: Properly handling mouseEntered: events
- From: Henry McGilton <email@hidden>
- Date: Wed, 25 Jun 2003 08:35:35 -0700
On Wednesday, June 25, 2003, at 05:17 AM, Stiphane Sudre wrote:
On mercredi, juin 25, 2003, at 14:00 Europe/Paris, Aidas Dailide wrote:
Hi there,
I read Apple's documentation on how to handle mouseEntered event. I
have subclass of NSView and i've overridden mouseEntered in it, but
no luck. I even tried setAcceptsMouseMovedEvents
setIgnoresMouseEvents:NO] ( I sent them to [myview window]), but
still no luck.
I also tried to add tracking rectangle, but nothing! What could be
wrong? I am sure that my NSView subclass accepts first responder.
You indeed need to add a tracking rectangle. Can you show us the code
you're using?
I discovered the hard way that you have to add the tracking rectangle(s)
in the code that creates the view --- that is, outside of the view's
code.
So you would do something like (from real code):
guidemover = [GuideHorizontalMover alloc];
guidemover = [guidemover initWithFrame: guidemoverrectangle];
[guidewindowbackdrop addSubview: guidemover];
guidemovertrackingtag = [guidemover addTrackingRect:
NSMakeRect(0, 0, GUIDELINES_MOVER_WIDTH,
GUIDELINES_MOVER_HEIGHT)
owner: guidemover userData: nil assumeInside: NO];
So I have alloc'd, init'd, and place the view into its superview
prior to adding the tracking rectangle.
I had previously thought to add the tracking rectangle in the
initWithFrame method of the view that was being created, but
discovered that that did not work.
Additionally, make sure you keep the tracking rectangle tag
around, because if you move the view within its superview, you
must remove the tracking rectangle and re-instate it.
The obtuse behaviour of tracking rectangles stems from the fat
that the window containing the view(s) maintains the tracking
rectangles.
This is all I know about tracking rectangles, and my advice here
is based on blundering about (not programming at all) until I
blundered into something that worked. Like mixing martinis, I
am sure that somebody will immediately spring out from behind a
mangrove tree to tell me I am wrong.
Best Wishes,
........ Henry
===============================+============================
Henry McGilton, Boulevardier | Trilithon Software
Objective-C/Java Composer | Seroia Research
-------------------------------+----------------------------
mailto:email@hidden |
http://www.trilithon.com
|
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