When I have a menu item which needs to be disabled based on current conditions, I implement -menuNeedsUpdate: in its menu's delegate, grab the item by its tag, and then -setEnabled:(YES or NO). I've been doing this for years.
Today I have a problem. If I set a particular item in the Application menu to be disabled in this way, a few milliseconds later, Cocoa resends -[NSMenuItem setEnabled:] with parameter YES, thus re-enabling the item. Culprit is -[NSCarbonMenuImpl _carbonUpdateStatusEvent:handlerCallRef:]. Complete call stack is shown below. What is doing this? I've worked around the problem by following setEnabled:NO with setAction:NULL. Thanks, Jerry Krinock * Mystery Call Stack (Note that I tapped into -[NSMenuItem setEnabled:] using Method Replacement, because breaking to Xcode when updating a menu aborts the menu updating, and also gdb was giving me crap for some reason when I set breakpoint actions to print the registers in -[NSMenuItem setEnabled:].) 1 MyFramework 0x001cf3e8 -[NSMenuItem(DebugByReplacingMethod) replacement_setEnabled:] + 136 2 AppKit 0x90d614c4 -[NSMenu _enableItem:] + 1081 3 AppKit 0x90ef88f6 -[NSCarbonMenuImpl _carbonUpdateStatusEvent:handlerCallRef:] + 559 4 AppKit 0x90e70d02 NSSLMMenuEventHandler + 452 5 HIToolbox 0x9064d62c _Z22_InvokeEventHandlerUPPP25OpaqueEventHandlerCallRefP14OpaqueEventRefPvPFlS0_S2_S3_E + 36 6 HIToolbox 0x904c8f4f _ZL23DispatchEventToHandlersP14EventTargetRecP14OpaqueEventRefP14HandlerCallRec + 1602 7 HIToolbox 0x904c83cc _ZL30SendEventToEventTargetInternalP14OpaqueEventRefP20OpaqueEventTargetRefP14HandlerCallRec + 482 8 HIToolbox 0x904dd0d5 SendEventToEventTarget + 76 9 HIToolbox 0x9064daf0 _ZL18SendHICommandEventmPK9HICommandmmhPKvP20OpaqueEventTargetRefS5_PP14OpaqueEventRef + 482 10 HIToolbox 0x9064dbf2 UpdateHICommandStatusWithCachedEvent + 70 11 HIToolbox 0x904c4aa3 _ZN13HIApplication12EventHandlerEP25OpaqueEventHandlerCallRefP14OpaqueEventRefPv + 2699 12 HIToolbox 0x9064d62c _Z22_InvokeEventHandlerUPPP25OpaqueEventHandlerCallRefP14OpaqueEventRefPvPFlS0_S2_S3_E + 36 13 HIToolbox 0x904c8f4f _ZL23DispatchEventToHandlersP14EventTargetRecP14OpaqueEventRefP14HandlerCallRec + 1602 14 HIToolbox 0x904c83cc _ZL30SendEventToEventTargetInternalP14OpaqueEventRefP20OpaqueEventTargetRefP14HandlerCallRec + 482 15 HIToolbox 0x904dd0d5 SendEventToEventTarget + 76 16 HIToolbox 0x906a1310 _ZL15SendMenuOpeningP14MenuSelectDataP8MenuDatadmmP14__CFDictionaryhPh + 847 17 HIToolbox 0x906a567c _ZL11DrawTheMenuP14MenuSelectDataPP9__CFArrayhPh + 202 18 HIToolbox 0x906a5bee _ZL11MenuChangedP14MenuSelectDatahh + 608 19 HIToolbox 0x9051529d _ZL15TrackMenuCommonR14MenuSelectDataPh + 1235 20 HIToolbox 0x906a9474 _ZL14MenuSelectCoreP8MenuData5PointdmPP13OpaqueMenuRefPt + 420 21 HIToolbox 0x9051152e _HandleMenuSelection2 + 636 22 HIToolbox 0x905112ad _HandleMenuSelection + 53 23 AppKit 0x90d6cd4a _NSHandleCarbonMenuEvent + 302 24 AppKit 0x90cfd08a _DPSNextEvent + 2196 25 AppKit 0x90cfc306 -[NSApplication nextEventMatchingMask:untilDate:inMode:dequeue:] + 113 26 AppKit 0x90cf8675 -[NSApplication run] + 911 27 AppKit 0x90f8c261 NSApplicationMain + 1054 28 MyApp 0x00001e15 main + 245 29 MyApp 0x00001d15 start + 53 _______________________________________________ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: https://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
