returning NO from readFromFile:ofType: causes exception
returning NO from readFromFile:ofType: causes exception
- Subject: returning NO from readFromFile:ofType: causes exception
- From: Robert Clair <email@hidden>
- Date: Fri, 18 Feb 2005 16:44:45 -0500
I have a multiple document app. It loads its data from files using
an override of [NSDocument readFromFile:ofType:] in my document
subclass.
I added some code to allow the user to cancel out in certain
situations. I clean
up all my local stuff and then return "NO".
This winds up raising an exception somewhere outside my code:
2005-02-18 16:26:43.093 MyApp[8894] *** *** Selector 'autorelease' sent
to dealloced instance 0x8569f90 of class MyDocumentSubclass.
stack trace:
#0 0x90a5c638 in -[NSException raise]
#1 0x90aaaa3c in -[_NSZombie autorelease]
#2 0x92f6a578 in -[NSDocumentController
makeDocumentWithContentsOfFile:ofType:]
#3 0x92f6a3ac in -[NSDocumentController _openDocumentFileAt:display:]
#4 0x92fb4368 in -[NSDocumentController _openFile:]
#5 0x92fa5f5c in -[NSApplication _doOpenFile:ok:tryTemp:]
#6 0x92fecd18 in -[NSApplication openFile:ok:]
#7 0x930549f0 in -[NSDocumentController _openRecentDocument:]
#8 0x92e78224 in -[NSApplication sendAction:to:from:]
#9 0x92eada44 in -[NSMenu performActionForItemAtIndex:]
#10 0x92ef22e4 in -[NSCarbonMenuImpl
performActionWithHighlightingForItemAtIndex:]
#11 0x92e2f440 in _NSHandleCarbonMenuEvent
#12 0x92dd3194 in _DPSNextEvent
#13 0x92de98c8 in -[NSApplication
nextEventMatchingMask:untilDate:inMode:dequeue:]
#14 0x92dfdc30 in -[NSApplication run]
#15 0x92eba2b8 in NSApplicationMain
#16 0x002fdf74 in main at main.m:28
It seems to be fairly difficult to gracefully abort things. Any
suggestions ?
TIA,
Bob Clair
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