Re: How to track a lost mouseDown
Re: How to track a lost mouseDown
- Subject: Re: How to track a lost mouseDown
- From: Uli Kusterer <email@hidden>
- Date: Mon, 27 Aug 2007 20:23:39 +0200
On 27.08.2007, at 19:53, Steve Cronin wrote:
My customView's - resetCursorRects gets called and the cursor
changes correctly when mouse moves thru the rect.
So, I guess the view is where you think it should be, good.
However when I then mouseDown (inside the changed cursorRect!) -
nothing
Have you tried setting a breakpoint in your mouseDown method and
running it in the debugger to see whether it's called, or added an
NSLog() call at the start? Maybe it *is* called but your code just
doesn't do what you think it should? If it isn't called, have you
checked your mouseDown method's name, parameters and return value for
correctness? I.e. are they exactly the same as in the declaration in
NSResponder or NSView or wherever they're first declared?
Can you post your mouseDown method? Can you post the header for
your class? (In particular, what have you chosen as the base class,
and what other methods are you overriding?)
Is your view frontmost?
It's always a good idea to run your code in the debugger and add
NSLog() calls to see where it is failing exactly, (if the debugger
doesn't trigger, always try an NSLog() or NSBeep() -- Sometimes the
debugger just got confused or you're accidentally running a release
build). And when posting here, posting code is always helpful.
To find out where an event is going, you could override sendEvent:
in NSApplication and NSWindow (using method swizzling), and add a
mouseDown method to NSResponder, to detect some places where an event
may go, but I'm not sure there's a way to get informed of events that
get dispatched to other views.
Cheers,
-- M. Uli Kusterer
http://www.zathras.de
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