Mailing Lists: Apple Mailing Lists
Image of Mac OS face in stamp
 
[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: Key Focus Between Carbon & Cocoa Windows

Hi Nick,
I have a similar report of a problem in Cocoa apps with focus issues
between Carbon floating windows and Cocoa windows. I'll investigate
to see if both these problems have the same root cause. Is your
workaround of attaching an event handler to the floating window
acceptable for now?

Kristin

>>> I'm trying to integrate some Cocoa windows into my Carbon
>>> application. I find that if a floating Carbon window (with the
>>> standard event handler) has the key focus and a Cocoa window tries
>>> to take the key focus I end up in a confused state where both seem
>>> to think they have the focus. I don't see this problem with Carbon
>>> document windows, just floating windows so I'm guessing it's a bug.
>>> Is there a workaround for this, such as adding an event handler to
>>> my floating windows or the WindowRef of my Cocoa windows?
>>
>> I don't actually know what's happening here, never have had a report
>> of this specific problem before. The Cocoa folks might know more,
>> since they handle the Carbon/Cocoa interaction more than we do.
>
> Upon further research I think there's a Carbon focus bug relating to
> floating windows. For example, if I'm focused on a text control in a
> document window and click in a text control in a floating window the
> floating control gets the focus but the document control remains
> highlighted and the caret continues to blink. I don't think the
> document window ever gets a "focus lost" CarbonEvent. When one window
> is a Cocoa window this seems to really confuse Cocoa (e.g., it loses
> the ability to backspace).
>
> I'll file a bug once I sort it out. One thing that seems to help is to
> attach an event handler to the floating window to clear the focus of
> all other windows when the floater gets the focus.
>
>
> Nick
_______________________________________________
carbon-development mailing list | email@hidden
Help/Unsubscribe/Archives: http://www.lists.apple.com/mailman/listinfo/carbon-development
Do not post admin requests to the list. They will be ignored.


Visit the Apple Store online or at retail locations.
1-800-MY-APPLE

Contact Apple | Terms of Use | Privacy Policy

Copyright © 2007 Apple Inc. All rights reserved.