On Mar 23, 2010, at 10:02 PM, Markus Spoettl wrote:
> My toolbar contains an item hosting a NSPopUpButton which has a menu. That 
> menu contains regular items and a sub-menu which has its delegate assigned to 
> the File's Owner because it's dynamic and needs to be rebuilt each time it is 
> displayed. I have found out that the mere fact the delegate is set causes a 
> crash when the toolbar customizer is created (through "Customize Toolbar…"). 


In the unlikely event someone here finds this interesting, here's some more 
information: 

Turns out that the menu delegate doesn't have to be set up in the NIB file to 
produce this crash, it even goes down if the (sub-) menu delegate is set 
programmatically (I did it in the -toolbarWillAddItem: notification, but it 
probably doesn't matter).

Well, I can't have a delegate driven dynamic menu in a NSPopUpButton in a 
toolbar on Leopard then I guess - at least not using the same logic that works 
on 10.6. 

Regards
Markus
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Markus Spoettl

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