On Feb 18, 2013, at 16:46:10, Fritz Anderson <[email protected]> wrote:
> "Notified" is the right word. NSWindow posts NSWindowDidResignKeyNotification
> and NSWindowDidResignMainNotification. There are also delegate methods with
> nearly the same names (which get passed the same notification objects).
Ah, thanks. I've added this, but it's not behaving nicely. I have a NSControl
subclass (FCBaselineView) that is NOT loaded from a nib, but instantiated
manually and added to its owning superview. I've overridden
viewWillMoveToWindow in my subclass so I can add the notification observer at a
time when the window exists:
-(void) viewWillMoveToWindow:(NSWindow*)newWindow;
{
// Does the super need to be called? I kind of assume it does not from
the docs, but it's not clear.
[super viewWillMoveToWindow:newWindow];
NSNotificationCenter* center = [NSNotificationCenter
defaultCenter];
[center removeObserver:self name:NSWindowDidResignKeyNotification
object:nil];
[center addObserver:self selector:@selector(windowDidResignKey)
name:NSWindowDidResignKeyNotification object:newWindow];
}
Then implemented the windowDidResignKey method:
-(void) windowDidResignKey:(NSNotification*)notification
{
UNUSED_VAR(notification);
printf("notify\n");
}
When I switch windows, I get an exception thrown:
2013-02-19 11:11:10.330 app[40530:303] -[FCBaselineView windowDidResignKey]:
unrecognized selector sent to instance 0x11f6b750
2013-02-19 11:11:10.331 app[40530:303] -[FCBaselineView windowDidResignKey]:
unrecognized selector sent to instance 0x11f6b750
2013-02-19 11:11:10.339 app[40530:303] (
0 CoreFoundation 0x92b9c12b __raiseError + 219
1 libobjc.A.dylib 0x9854852e objc_exception_throw
+ 230
2 CoreFoundation 0x92b9fd9d -[NSObject(NSObject)
doesNotRecognizeSelector:] + 253
3 CoreFoundation 0x92ae8437 ___forwarding___ +
487
4 CoreFoundation 0x92ae81e2
_CF_forwarding_prep_0 + 50
5 Foundation 0x97845c52
__57-[NSNotificationCenter addObserver:selector:name:object:]_block_invoke_0 +
49
6 CoreFoundation 0x92b5de01
___CFXNotificationPost_block_invoke_0 + 257
7 CoreFoundation 0x92aa943a _CFXNotificationPost
+ 2794
8 Foundation 0x9782e788
-[NSNotificationCenter postNotificationName:object:userInfo:] + 92
9 Foundation 0x9783e527
-[NSNotificationCenter postNotificationName:object:] + 55
10 AppKit 0x93c87143 -[NSWindow
resignKeyWindow] + 599
11 AppKit 0x93b1021d
_NXSendWindowNotification + 60
12 AppKit 0x93950c0b endKeyAndMain + 81
13 AppKit 0x93b3768c -[NSApplication
sendEvent:] + 3379
14 AppKit 0x93a5172c -[NSApplication run]
+ 951
15 AppKit 0x939f46f6 NSApplicationMain +
1053
16 app 0x012d2c30 main + 160
17 app 0x00002d65 start + 53
18 ??? 0x00000003 0x0 + 3
)
--
Steve Mills
office: 952-818-3871
home: 952-401-6255
cell: 612-803-6157
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