Punching holes into IKImageView
I have an IKImageView and would like to create holes, i.e. set alpha to zero in some rectangle. And then save the result in some format. What would be the easiest way to do this? 1. Create a CIFilter and do: myIkImageView.imageCorrection = myHoleFIlter save myIkImageView 2. CGImageRef cgImage = [ myIkImageView image ]; NSBitmapImageRep *bp = [ [NSBitmapImageRep alloc ] initWithCGImage: cgImage]; NSColor *c = [ NSColor clearColor]; for the intended rectangle do: [ bp setColor: c atX: ... y: ...]; CGImageRef new = [ bp CGImage ]; [ myIkImageView setImage: new imageProperties: ...]; save myIkImageView 3. Something else? Maybe just use an existing filter (CISourceOverCompositing ?) to put a clear rectangle on top? Efficiency is not the prime concern. It would be acceptable if it takes a few seconds to create a hole. I have no experience with CIFilter yet. Kind regards, Gerriet. ___ 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: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: Two text fields, one outlet?
On 5 Apr 2010, at 04:09, Jenny M wrote: This is the method I ended up going with. I had tried to use bindings before by doing exactly that - setting up a property, synthesizing it, and binding the value to the property - but I noticed I was setting the value wrong. I was calling property = [NSNumber...] rather than [self setProperty:[]]. -- Finally, that worked!! Setting of properties can and should be done this way (except when using the modern runtime and synthesizing the instance variable): self.property = ... which is equivalent to [self setProperty: ...] Klaus ___ 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: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Any frameworks for Leopard's Spaces?
How can I make my app know about when a space has changed, and when it has done so to which space it has changed? Also, how can I read which Spaces and how many are currently available? I'm allowed to use Snow Leopard. The only thing I'm aware of is the NSWorkspaceActiveSpaceDidChangeNotification in NSWorkspace, but that only tells me that a space changed, but doesn't provide me with any more information. Any ideas? I suppose the developer of Hyperspaces.app would know about this, but I guessed that he wouldn't want to tell me about his trade secrets :) Not that I'm gonna develop a competing product, just need to do some in-house stuff that allows for different keyboard layouts for differents spaces, but anyway, better to ask here I think. _ Hotmail: Trusted email with Microsoft’s powerful SPAM protection. https://signup.live.com/signup.aspx?id=60969___ 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: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: Why doesn't -[NSArrayController selection] et al fire keyPathsForValuesAffectingKey?
OK, I filed Bug ID# 7827354. (See bottom of this message.) But I don't see
the need for MAKVONotificationCenter here...
On 2010 Apr 02, at 22:33, Kyle Sluder wrote:
I would think that the right thing to do would be to subclass
NSArrayController and write a
-canPerformFoo method.
Yes, so I went back and did it the right way. To be general, I called it
simply -(BOOL)hasSelection
But you would need to self-observe the selection property,
Indeed, because of the bug in NSArrayController, this doesn't work:
+ (NSSet*)keyPathsForValuesAffectingHasSelection {
return [NSSet setWithObject@selection] ;
}
which is perilous because -removeObserver:forKeyPath: doesn't take a context
argument (another
bug every Cocoa developer should file a duplicate of). So you could use
MAKVONotificationCenter (or OFBinding, our analogue) to self-observe.
I already use MAKVONotificationCenter in this project, but I don't see the need
for it here. In the array controller's -dealloc,
[self removeObserver:self
forKeyPath:@selectedObjects] ;
Why is that perilous? (It seems to work.)
Perhaps it would be easier to instead put the -canPerformFoo method on your
window controller.
I already have my own NSArrayController subclass for other reasons.
**
Apple Bug ID# 7827354
Title: NSArrayController Observeable Methods Don't Do
+keyPathsForValuesAffectingKey
Summary: There are four methods which give the selection in some form, and
they are all documented to be observable using key-value observing. However,
none of them trigger change notifications when their name is returned in
+keyPathsForValuesAffectingKey.
Steps to Reproduce:
1. Require an instance variable which is a function of the current selection
in an NSArrayController. Here is a simple example:
// In @interface,
/*!
@briefReturns whether or not any content item in the receiver
is selected.
@details This property should be observeable using KVO.
*/
- (BOOL)hasSelection ;
// In @implementation,
+ (NSSet*)keyPathsForValuesAffectingHasSelection {
return [NSSet setWithObjects:
// Any one of the following should be sufficient.
@selection,
@selectedObjects,
@selectionIndex,
@selectionIndexes,
nil] ;
}
- (BOOL)hasSelection {
return ([[self selectedObjects] count] 0) ;
}
2. Bind some binding in a user-interface element, for example the 'enabled'
binding of some button which requires a selection in the array controller, to
the 'hasSelection' property.
3. Build and run the project.
4. Change the number of items selected in the array controller from 0 to some
nonzero number, and vice versa.
Expected Results:
When the number of selected objects changes, the object observing
'hasSelection' should invoke -hasSelection.
Actual Results:
-hasSelection does not get invoked.
Notes:
I am advised by Kyle Sluder that the bug underlying this bug is the bug that
+keyPathsForValuesAffectingValueForKey relies on
NSKeyValueObservingOptionPrior, and that NSArrayController doesn't support
NSKeyValueObservingOptionPrior. See discussion here:
http://lists.apple.com/archives/Cocoa-dev/2010/Apr/msg00088.html
You must read the entire thread because I originally discovered this problem
indirectly, and we also hypothesized other causes which turned out to be wrong.
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Re: Using the #import directive
On 2 Apr 2010, at 00:59, Steve Cronin wrote: On Apr 1, 2010, at 5:58 PM, Jens Alfke wrote: On Apr 1, 2010, at 3:51 PM, Steve Cronin wrote: I have an import statement like the last example but I can't find any bar directory I'm unable to determine the particular instance of foo.h that is being used here… Select bar/foo.h and press Cmd-Shift-D (File Open Quickly). That should open the header. Then you can command-click the window title to see the path. —Jens Jens; Thanks for this and it did allow me to find the offending file. I now would like to specify a different remote source for a few headers. I have set 'Header Search Paths to $(SRCROOT)/../../dir1/dir2 (recursive checked) I can't seem to figure out how to refer to them in the #import statement… #import dir2/foo.h -- no such #import /foo.h-- no such file.. How do I do this? Have you tried #import foo.h yet? Thanks for helping out here! Steve___ 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: http://lists.apple.com/mailman/options/cocoa-dev/adc%40jeremyp.net This email sent to a...@jeremyp.net ___ 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: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
NSMutableURLRequest: How to change Request URI?
Writing an iPhone app to login to a site remotely that is running php. In order to log in to the website it appears I need to do the following: POST /submit.php?do=submit HTTP/1.1\r\n However, no matter what I do all I seem to be able to accomplish is: POST / HTTP/1.1\r\n It appears that the / HTTP/1.1\r\n are added by NSMutableURLRequest. But I need it to be /submit.php?do=submit HTTP/1.1\r\n. So how do I make these changes? Cheers, Lloyd___ 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: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Problem with NSData
In a Cocoa app targeting Leopard, I am getting a malloc error when using the
NSData method
- (void)getBytes:(void *)buffer
My function is as follows:
-(void)getDataSz:(void*)data ofSize:(NSUInteger)sz
{
NSData *theData = [input readDataOfLength:sz];
[theData getBytes:data]; // -- no error when commented out
}
This function is actually in a subtask and
input
is an NSFileHandle.
Input is reading data (from the main task) correctly with no error.
However,
[theData getBytes:data];
generates the following error (most of the time):
malloc: *** free() called with 0x9aadca0 with refcount 0
malloc: *** auto malloc[3230]: agc error for object 0x9aadca0: Deallocating
a non-block
In normal operation, getDataSz takes in a buffer allocated by an STL vector
in the following call:
[mySubtaskServer getDataSz:my_vec[0] ofSize:dataSize];
If (just for testing), I replace the argument, data, with a local malloc
buffer (in getDataSz) and free it before exiting, then I do not see this
error.
FWIW, I also do not see this error in an earlier call in which the amount of
data read is less than a block (4096 bytes).
The Build options have
Call C++ Default Ctors/Dtors in Objective-C
set to YES
and garbage-collection is Supported.
Compiler is gcc 4.2.
Is there something else I should be doing here?
Thanks.
--
Mike McLaughlin
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Re: Finding managed objects by URI representation
On 05/04/2010, at 6:51 AM, Ben Trumbull wrote:
No, this is going the wrong way. The objectID is the object's identity in
the persistent store (e.g. primary key). You don't need to store pieces of
it somewhere else.
NSPredicate *predicate = [NSPredicate predicateWithFormat:@self == %@,
myobjectid];
or
NSPredicate *predicate = [NSPredicate predicateWithFormat:@self in %@,
objectidarray];
Can I just clarify a couple of things about this:
1. The documentation says Important: If the receiver has not yet been saved,
the object ID is a temporary value that will change when the object is saved.
Now I want to use the IDs as keys in a dictionary, which of course copies the
keys, and it is very likely that the objects will be added to the dictionary
before saving, and referenced after save. I have checked, and the documentation
is true - the object ID does get changed to a completely new one (different
pointer) upon save, and also I note in the documentation, it warns about the
file modification date, so in order to make sure this works, I believe I will
have to do the following before I put it into my dictionary (I don't want to
have my object directly as an instance variable of the managed object, since
the object is at the UI layer, and the managed object layer shouldn't need to
know about it):
if ([[myManagedObject objectID] isTemporaryID]) {
NSError *error = nil;
if (![[myManagedObject managedObjectContext]
obtainPermanentIDsForObjects:[NSArray arrayWithObject:myManagedObject]
error:error]) {
log4Error(@Could not obtain permanent ID for %@,
myManagedObject);
if (error) {
[NSApp presentError:error];
}
return nil;
}
NSPersistentDocument *document = self view] window]
windowController] document];
[document setFileModificationDate:[NSDate date]];
}
...(create my object)...
[myDictionary setObject:anObject forKey:[myManagedObject objectID]];
But when I try that, it throws an exception saying Can't resolve how to assign
objects to stores; Coordinator does not have any stores.
The documentation says Any object not already assigned to a store is assigned
based on the same rules Core Data uses for assignment during a save operation
(first writable store supporting the entity, and appropriate for the instance
and its related items)..
My store class is registered in applicationWillFinishLaunching:, and everything
seems to work OK while saving, so I would have expected it to be able to create
one if it needed to, but the error seems to imply that I have to manually
create my atomic store and add it to the coordinator before this, in order to
be able to get it to generate the permanent ID.
If this is the case, sure, I can create one, but I'm not sure what URL to give
it seeing as the user hasn't saved it yet, and besides, I'm not sure if it will
have any impact on the behavior when the user actually does save it.
I just want to check that I haven't gone off on the wrong path again with this,
and that I really do have to do all this to get a stable ID...it just seems to
me that if I have to do all this just to get a stable ID, maybe there is some
more fundamental design issue with my program, or concept I am not getting, and
maybe I am trying to work against the way the framework is supposed to be used.
2. From the Predicate Programming Guide, it says that SELF refers to the
objects that are being searched. I read through the whole guide and found
nothing there stating that it could also refer to the managed object ID. I did
eventually find it in the Core Data Programming Guide, but even when I knew
what I was looking for, it took ages to find. I really think it should be
mentioned in the Predicate Programming Guide - should I file a bug against that
documentation?
Thanks
Gideon___
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Re: Run Loop in Tool Idles for 60.0 seconds before exitting [Solved]
On Apr 4, 2010, at 11:00 PM, Jerry Krinock wrote:
On 2010 Apr 04, at 14:44, Ken Thomases wrote:
Since you're already using operations, why use the above 'while' loop,
anyway? Why not use -[NSOperationQueue waitUntilAllOperationsAreFinished].
Or schedule a sentinel operation that depends on all of the other
operations, either directly or indirectly, and then invoke
-waitUntilFinished on it.
Alas, many of my operations call back to perform Core Data operations on the
main thread. (Syncing multiple managed object contexts never looked like
much fun to me.) The disadvantage is that this nice, clean approach you
suggest results in deadlock.
Ah, yes. This approach won't work in that case.
- (void)tickleRunLoop {
// No op
}
/* This method is called from the -main of the final NSOperation
in an Agent task. Like all NSOperations, it's running on a
secondary thread. */
- (void)terminateWork {
// Set the exit condition for Worker
[[AgentPerformer sharedPerformer] setIsDone:YES] ;
// Now install an input source on the main run loop, so that
// in Worker-main.m, in main(), -runLoop:beforeDate: will
// unblock, the above exit condition will be tested, found
// to be true, and cause the loop to break so that Worker
// can continue along to exit.
[self performSelectorOnMainThread:@selector(tickleRunLoop)
withObject:nil
waitUntilDone:YES] ;
}
This is actually a simple modification of the code at the end of my original
post, except that now we remember to call back to the main thread -- Thank
you, Ken!
You're welcome.
I'm happy with this, although I suspect someone might suggest something less
kludgey.
You might have -terminateWork only do the -setIsDone: step. Then, instead of
the operation's -main directly invoking -terminateWork, it could perform it on
the main thread. That way, the setting of isDone is actually happening on the
main thread, plus it serves as its own tickle of the run loop.
Also, there's no need to pass YES for the waitUntilDone: parameter. Since this
is the last thing you need to be done on the background thread, there's no need
to be sure it's complete before exiting. In general, it's best to avoid
blocking the worker threads managed for your by NSOperationQueue or GCD.
I still wonder why my original code exitted after a 60-second timeout, though.
Well, the run loop documentation specifically warns that you can't be sure that
your input sources are the only input sources in the run loop. The frameworks
may put their own input sources there, too.
In this case, my guess is that it was the last worker thread timing out from
waiting for work, and shutting itself down. It may have performed some
internal selector on NSOperationQueue on the main thread, to inform it that the
worker thread had terminated.
Regards,
Ken
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RE: Any frameworks for Leopard's Spaces?
I don't mind using private API for this. After all my goal is to make some simple in-house app and it doesn't matter too much if it breaks after some OS X update. I am aware the private API discussion is forbidden here. Thus, if anyone can point me in the right direction, I would appreciate it if he or she can send me an off-list message about it. Thanks in advance, U. - The NSWorkspace notification is the only public API for this. Relatedly, you should not use private APIs which will restrict Apple's ability to change the internal implementation easily in the future, and make innovations or improvements difficult on them. -Steven _ Hotmail: Trusted email with powerful SPAM protection. https://signup.live.com/signup.aspx?id=60969___ 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: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Preservation of State
Greetings: I wish to preserve the state of an iPhone/iTouch application; which means that I would like the application to continue deep down within a stock of View Controllers at a particular view when I return to the application. Does this mean that I need to preserve the ID of a particular viewController/position in the NSUserDefaults? For example, I store a unique identifier/pathway of a target in NSUserDefaults then navigate back to that position upon return to the application? What is the recommended paradigm to handle this? Regards, Ric.___ 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: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: NSMutableURLRequest: How to change Request URI?
On Apr 5, 2010, at 7:30 AM, Lloyd Sargent wrote: Writing an iPhone app to login to a site remotely that is running php. In order to log in to the website it appears I need to do the following: POST /submit.php?do=submit HTTP/1.1\r\n However, no matter what I do all I seem to be able to accomplish is: POST / HTTP/1.1\r\n It appears that the / HTTP/1.1\r\n are added by NSMutableURLRequest. Yes; that is required by the spec. Otherwise the server would assume the client is using an ancient version of HTTP, which is not what you want to happen. But I need it to be /submit.php?do=submit HTTP/1.1\r\n. So how do I make these changes? Are you sure you're setting the URL correctly? That bit is part of the URL. What is the returned value of [request URL] prior to placing the request into a connection? Nick Zitzmann http://www.chronosnet.com/ ___ 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: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: NSMutableURLRequest: How to change Request URI?
It appears that the / HTTP/1.1\r\n are added by NSMutableURLRequest. Yes; that is required by the spec. Otherwise the server would assume the client is using an ancient version of HTTP, which is not what you want to happen. Got it. But I need it to be /submit.php?do=submit HTTP/1.1\r\n. So how do I make these changes? Are you sure you're setting the URL correctly? That bit is part of the URL. What is the returned value of [request URL] prior to placing the request into a connection? Doh!!! Thanks, it's been a while and the mind gets rusty. Yup, just added it to the URL and now it works just perfect! I'm a happy camper! Cheers, Lloyd___ 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: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Modal Window with dynamic nstextfield
I have a modal window with code to update both a progress bar and corresponding
text...the progress bar gets updated just fine but the textfield never does
(except if I re-run the method the last string I pushed to the textfield from
the previous run does appear).My understanding was that if you ran a modal
session you could still interact with the UI to display changes...let me know
what I'm missing here. I created a simple run loop to detail my issue.
[NSApp beginSheet: progressWindow
modalForWindow: mainWindow
modalDelegate: self
didEndSelector: nil
contextInfo: nil];
NSModalSession session = [NSApp
beginModalSessionForWindow:progressWindow];
[progressIndicator displayIfNeeded];
[progressIndicator setDoubleValue:0.0];
[NSApp runModalSession:session];
int mmm;
for (mmm=0;mmm150;mmm++)
{
[progressIndicator displayIfNeeded];
[progressIndicator setDoubleValue:mmm];
NSString *temp222 = [NSString stringWithFormat:@%d,mmm];
NSLog(@string value is %d,mmm);
[statusText setStringValue:temp222];
}
NSDate *future2 = [NSDate dateWithTimeIntervalSinceNow:2];
[NSThread sleepUntilDate:future2];
[NSApp endModalSession:session];
[progressWindow orderOut:self];
[NSApp endSheet:progressWindow];
Thanks,
jeremy
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Re: Preservation of State
On Apr 5, 2010, at 6:04 PM, Frederick C. Lee wrote: Greetings: I wish to preserve the state of an iPhone/iTouch application; which means that I would like the application to continue deep down within a stock of View Controllers at a particular view when I return to the application. Does this mean that I need to preserve the ID of a particular viewController/position in the NSUserDefaults? For example, I store a unique identifier/pathway of a target in NSUserDefaults then navigate back to that position upon return to the application? What is the recommended paradigm to handle this? Regards, Ric Hi Frederick, I've been giving some thought to the same question lately and here's what I've come up with. For a UI that is heavy on drilling down a hierarchy of view controllers, I imagine the path from the application's root view controller to any other view controller as represented by an instance of NSIndexPath. So, for example, the index path 1.3.2 would represent going through the second VC from the root controller, then the fourth VC accessible from that, then the third VC accessible from that. (Recall that indices in an index paths are zero-based) So, one could have an index path ivar in the application delegate which is updated every time a given VC is pushed into, or popped from, the navigation stack. Naturally, that ivar is saved when the application terminates and read when the application starts up. Then, once it's read back in, it's just a matter of following the bread crumbs to the last visited view controller. Of course, one needs to make sure that this automated walk-through of the hierarchy has the same relevant effects as when the user did it, but not everything needs to be redone. For instance, animations that might happen in the intermediate view controllers need not be performed again, since the goal is to get back to the last visited view controller as quickly as possible. I'm very interested in other people's take on this issue, since I have no idea if my solution is the best or even the recommended way of achieving the desired result. Wagner___ 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: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: C typedef for NS ptrs?
On Fri, 2 Apr 2010 16:38:48 -0500, Andy O'Meara said: A have a couple vanilla NS object ptrs (e.g. NSWindow*) that I have to pass through some cross-plaform C++ code until it ends up in a .mm file where where the NS object is accessed. The problem is that in the .cpp code, there's no obvious way to declare a NSWindow ptr so that thinks will link without complaint. You could maybe use this trick: http://lists.apple.com/archives/cocoa-dev/2009/Dec/msg01466.html basically: The header objc/objc.h is a C-language header implementing the runtime. It defines some standard types used by Objective-C, including id. So if you include this, your headers can use the id data type even if they're included from plain C++ or C files. -- Sean McBride, B. Eng s...@rogue-research.com Rogue Researchwww.rogue-research.com Mac Software Developer Montréal, Québec, Canada ___ 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: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Bindings ivars
Why, after I have connected a control in my nib. window using bindings can I no longer access it from code? After connecting a checkbox control using bindings, when my window controller loads, that control's ivar shows up as nil. Thanks, Chuck ___ 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: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Standard controls on top of NSGradients
I have a custom NSView subclass that contains an NSGradient. All this class does is draw a grey vertical gradient like iPhoto and iTunes do. When I place standard controls on top of one of my custom gradient views, when clicked, they also draw their rects with the same gradient - even though I don't include any code to do that. Do I need to lockFocus or some other aspect of CG on my custom view before I draw my gradient in my view's drawRect: method? Thanks, Chuck ___ 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: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: Standard controls on top of NSGradients
On Apr 5, 2010, at 12:15 PM, Charles Burnstagger wrote: When I place standard controls on top of one of my custom gradient views, when clicked, they also draw their rects with the same gradient - even though I don't include any code to do that. Do I need to lockFocus or some other aspect of CG on my custom view before I draw my gradient in my view's drawRect: method? What happens is when those controls redraw, some part of your view is invalidated, so you are asked to draw again. I suspect that when you draw, you are then using the rect parameter passed to -drawRect: to determine the extends of the gradient – which is incorrect. The rect parameter passed to -drawRect: is only a hint as to what parts of the view need to be redrawn. You should always do your drawing with respect to your view's bounds. -- David Duncan Apple DTS Animation and Printing ___ 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: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
UpdateSystemActivity replacement in Cocoa?
Hey cocoa crew, quick question... I'm looking for a Cocoa replacement for Carbon's UpdateSystemActivity() since it appears to be unavailable under x86_64. Any help or suggestion would be appreciated! Thanks, Andy ___ 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: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: Problem with NSData
I may be off on an island by myself here but I thought I'd add some more
info just in case someone recognizes it and has a useful thought.
The error described below occurs because the data I sent through
NSFileHandle to NSData (in the subtask) was actually the elements of a
vectormyStruct
[just the array, not the vector header].
myStruct itself contains four fields which are STL containers and, hence,
have ctors/dtors, etc., of their own.
The fields are two strings, a list and a map, the latter two being empty.
If I create a pseudo_myStruct for testing that lacks these four fields, then
everything works.
Therefore, there is some STL/malloc issue involved in recreating
vectormyStruct with its STL containers
from the bytes recovered from an NSData object regardless of how one
accesses those bytes. [I've tried all of the available NSData methods.]
Also, I had expected the copy in the subtask to be shallow but I might have
been mistaken on that score.
That is the limit of my knowledge about this and, if anyone has been down
this road before, I'd appreciate a clue or two.
Thanks again.
In a Cocoa app targeting Leopard, I am getting a malloc error when using the
NSData method
- (void)getBytes:(void *)buffer
My function is as follows:
-(void)getDataSz:(void*)data ofSize:(NSUInteger)sz
{
NSData *theData = [input readDataOfLength:sz];
[theData getBytes:data]; // -- no error when commented out
}
This function is actually in a subtask and
input
is an NSFileHandle.
Input is reading data (from the main task) correctly with no error.
However,
[theData getBytes:data];
generates the following error (most of the time):
malloc: *** free() called with 0x9aadca0 with refcount 0
malloc: *** auto malloc[3230]: agc error for object 0x9aadca0: Deallocating
a non-block
In normal operation, getDataSz takes in a buffer allocated by an STL vector
in the following call:
[mySubtaskServer getDataSz:my_vec[0] ofSize:dataSize];
If (just for testing), I replace the argument, data, with a local malloc
buffer (in getDataSz) and free it before exiting, then I do not see this
error.
FWIW, I also do not see this error in an earlier call in which the amount of
data read is less than a block (4096 bytes).
The Build options have
Call C++ Default Ctors/Dtors in Objective-C
set to YES
and garbage-collection is Supported.
Compiler is gcc 4.2.
Is there something else I should be doing here?
Thanks.
--
Mike McLaughlin
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Re: Standard controls on top of NSGradients
Thanks. Changing to [ self.theGradient drawInRect:self.bounds angle:90.0 ]; in drawRect: did the trick. Chuck From: David Duncan david.dun...@apple.com To: Charles Burnstagger burnstag...@yahoo.com Cc: cocoa-dev@lists.apple.com Sent: Mon, April 5, 2010 12:23:46 PM Subject: Re: Standard controls on top of NSGradients On Apr 5, 2010, at 12:15 PM, Charles Burnstagger wrote: When I place standard controls on top of one of my custom gradient views, when clicked, they also draw their rects with the same gradient - even though I don't include any code to do that. Do I need to lockFocus or some other aspect of CG on my custom view before I draw my gradient in my view's drawRect: method? What happens is when those controls redraw, some part of your view is invalidated, so you are asked to draw again. I suspect that when you draw, you are then using the rect parameter passed to -drawRect: to determine the extends of the gradient – which is incorrect. The rect parameter passed to -drawRect: is only a hint as to what parts of the view need to be redrawn. You should always do your drawing with respect to your view's bounds. -- David Duncan Apple DTS Animation and Printing ___ 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: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: Bindings ivars
Chuck, By bindings, do you mean Cocoa Bindings or a standard IBOutlet? If you mean Cocoa Bindings using the Bindings Inspector, then your control will only be accessible from code if you have made a standard outlet connection with it. Different types of connections (outlets, actions, bindings, etc) are separate entities. Having one does not mean the others are present. But it is certainly common to have multiple types of connections active for a given object (outlet to a button, action from the button, and binding the button's enabled property, for example). Kevin On 5 Apr 2010, at 11:53, Charles Burnstagger wrote: Why, after I have connected a control in my nib. window using bindings can I no longer access it from code? After connecting a checkbox control using bindings, when my window controller loads, that control's ivar shows up as nil. Thanks, Chuck ___ 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: http://lists.apple.com/mailman/options/cocoa-dev/cathey%40apple.com This email sent to cat...@apple.com ___ 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: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: Why doesn't -[NSArrayController selection] et al fire keyPathsForValuesAffectingKey?
On Mon, Apr 5, 2010 at 3:08 AM, Jerry Krinock je...@ieee.org wrote: I already use MAKVONotificationCenter in this project, but I don't see the need for it here. In the array controller's -dealloc, [self removeObserver:self forKeyPath:@selectedObjects] ; Why is that perilous? (It seems to work.) Because if NSArrayController also self-observes on @selectedObjects, you've removed that observation from under its feet. MAKVONotificationCenter and OFBinding solve this problem by creating separate objects, so they'll only ever register for a keypath once. --Kyle Sluder ___ 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: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: UpdateSystemActivity replacement in Cocoa?
Looks to me like it's still available for x86_64. Are you linking with the CoreServices framework? Kevin On Apr 5, 2010, at 12:36 PM, Andy O'Meara wrote: Hey cocoa crew, quick question... I'm looking for a Cocoa replacement for Carbon's UpdateSystemActivity() since it appears to be unavailable under x86_64. Any help or suggestion would be appreciated! Thanks, Andy ___ 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: http://lists.apple.com/mailman/options/cocoa-dev/kainjow%40kainjow.com This email sent to kain...@kainjow.com ___ 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: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: Two text fields, one outlet?
On Mon, Apr 5, 2010 at 1:56 AM, Klaus Backert klaus.back...@t-online.de wrote: Setting of properties can and should be done this way (except when using the modern runtime and synthesizing the instance variable): There's nothing different about synthesizing the instance variable. If you want the property semantics, use either dot syntax (foo.bar = baz) or message syntax ([foo setBar:baz]). They are defined to be exactly equivalent. Again, you can use whichever you like. If you want the direct ivar access semantics (for example, in -init and -dealloc), but you've synthesized the ivar, you can use pointer dereference through self to get at it (self-bar = baz). Both semantics are necessary. It's important to understand the difference between them. Older compilers don't support pointer dereference for synthesized ivars. This is a bug, and you should upgrade your development tools. --Kyle Sluder ___ 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: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: Bindings ivars
Le 5 avr. 2010 à 19:53, Charles Burnstagger a écrit : Why, after I have connected a control in my nib. window using bindings can I no longer access it from code? After connecting a checkbox control using bindings, when my window controller loads, that control's ivar shows up as nil. A binding is a mechanism whereby a property of something like a control can be linked to a property of another object. It allows the observing object to be updated when the value of the observed property changes. It is not meant to be a means of talking to an object in a NIB. If you need access to an object in the N IB, then you need to add an IBOutlet to the controller class and hook it up to the appropriate object in the NIB. If you want to use the observer mechanism of bindings, then you cannot use an ivar in the observed class, you need a KVO compliant property instead, otherwise the notifications of change will not get sent to the observing object. Joanna -- Joanna Carter Carter Consulting ___ 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: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: UpdateSystemActivity replacement in Cocoa?
On Mon, 5 Apr 2010 14:36:56 -0500, Andy O'Meara said: I'm looking for a Cocoa replacement for Carbon's UpdateSystemActivity() since it appears to be unavailable under x86_64. Google IOPMAssertionCreate / IOPMAssertionCreateWithName Here's a snippit from our app: err = IOPMAssertionCreate ( kIOPMAssertionTypeNoDisplaySleep, kIOPMAssertionLevelOn, _assertionID); -- Sean McBride, B. Eng s...@rogue-research.com Rogue Researchwww.rogue-research.com Mac Software Developer Montréal, Québec, Canada ___ 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: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: Modal Window with dynamic nstextfield
On Mon, Apr 5, 2010 at 10:15 AM, Jeremy Matthews jeremymatth...@mac.com wrote:
for (mmm=0;mmm150;mmm++)
{
[progressIndicator displayIfNeeded];
[progressIndicator setDoubleValue:mmm];
NSString *temp222 = [NSString stringWithFormat:@%d,mmm];
NSLog(@string value is %d,mmm);
[statusText setStringValue:temp222];
}
Oh, dear.
I would highly recommend reading the Threading Programming Guide:
http://developer.apple.com/Mac/library/documentation/Cocoa/Conceptual/Multithreading/Introduction/Introduction.html
--Kyle Sluder
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Re: Finding managed objects by URI representation
On Apr 5, 2010, at 8:18 AM, Gideon King wrote: On 05/04/2010, at 6:51 AM, Ben Trumbull wrote: No, this is going the wrong way. The objectID is the object's identity in the persistent store (e.g. primary key). You don't need to store pieces of it somewhere else. NSPredicate *predicate = [NSPredicate predicateWithFormat:@self == %@, myobjectid]; or NSPredicate *predicate = [NSPredicate predicateWithFormat:@self in %@, objectidarray]; Can I just clarify a couple of things about this: 1. The documentation says Important: If the receiver has not yet been saved, the object ID is a temporary value that will change when the object is saved. Now I want to use the IDs as keys in a dictionary, which of course copies the keys, and it is very likely that the objects will be added to the dictionary before saving, and referenced after save. I have checked, and the documentation is true Yes, the documentation is true :-) But when I try that, it throws an exception saying Can't resolve how to assign objects to stores; Coordinator does not have any stores. What is going on is that you haven't yet saved the NSDocument so there is no database backing it. Until the first save, the document is entirely in memory. We cannot assign a permanent objectID until you actually have a persistent store file. The documentation says Any object not already assigned to a store is assigned based on the same rules Core Data uses for assignment during a save operation (first writable store supporting the entity, and appropriate for the instance and its related items).. Yes. You can explicitly set the object to a store as well. My store class is registered in applicationWillFinishLaunching:, and everything seems to work OK while saving, so I would have expected it to be able to create one if it needed to, but the error seems to imply that I have to manually create my atomic store and add it to the coordinator before this, in order to be able to get it to generate the permanent ID. That's the store Class. The exception message is that your NSDocument's PSC doesn't actually have any stores (files) added to it at all. I just want to check that I haven't gone off on the wrong path again with this, and that I really do have to do all this to get a stable ID...it just seems to me that if I have to do all this just to get a stable ID, maybe there is some more fundamental design issue with my program, or concept I am not getting, and maybe I am trying to work against the way the framework is supposed to be used. Well, what are you doing such that you need this dictionary that maps object IDs before the document has ever been saved ? Where are you sending this dictionary off to ? 2. From the Predicate Programming Guide, it says that SELF refers to the objects that are being searched. I read through the whole guide and found nothing there stating that it could also refer to the managed object ID. I did eventually find it in the Core Data Programming Guide, but even when I knew what I was looking for, it took ages to find. I really think it should be mentioned in the Predicate Programming Guide - should I file a bug against that documentation? Please do. - Ben ___ 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: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: UpdateSystemActivity replacement in Cocoa?
On Apr 5, 2010, at 3:31 PM, Kevin Wojniak wrote:
Looks to me like it's still available for x86_64. Are you linking with the
CoreServices framework?
Kevin
Yeah, I've got:
#include CoreServices/CoreServices.h
void foo() {
UpdateSystemActivity( UsrActivity ); // Error: 'UpdateSystemActivity' was
not declared in this scope
}
Also, if I declare it, I get a link error saying the symbol doesn't exist.
It'd be nice to use UpdateSystemActivity(), but it seems Sean's IOKit method
the only way to proceed (thanks Sean!).
Andy
On Apr 5, 2010, at 12:36 PM, Andy O'Meara wrote:
Hey cocoa crew, quick question...
I'm looking for a Cocoa replacement for Carbon's UpdateSystemActivity()
since it appears to be unavailable under x86_64.
Any help or suggestion would be appreciated!
Thanks,
Andy
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Re: Two text fields, one outlet?
On 5 Apr 2010, at 22:40, Kyle Sluder wrote: On Mon, Apr 5, 2010 at 1:56 AM, Klaus Backert klaus.back...@t-online.de wrote: Setting of properties can and should be done this way (except when using the modern runtime and synthesizing the instance variable): There's nothing different about synthesizing the instance variable. If you want the property semantics, use either dot syntax (foo.bar = baz) or message syntax ([foo setBar:baz]). They are defined to be exactly equivalent. Again, you can use whichever you like. If you want the direct ivar access semantics (for example, in -init and -dealloc), but you've synthesized the ivar, you can use pointer dereference through self to get at it (self-bar = baz). Both semantics are necessary. It's important to understand the difference between them. Older compilers don't support pointer dereference for synthesized ivars. This is a bug, and you should upgrade your development tools. --Kyle Sluder Yes, I know. My statement above has a different background, among other things a documentation bug (somebody told me off list about it), and, sigh, my incomplete ablity of expressing myself in a foreign language. Klaus ___ 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: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Problems with repetetive execution of netstat using NSTask and NSTimer
Hello, I'm working on an application named IPShowX. Take a look at for more info: http://kaziorvb.pl/IPShowX/ When I run it, it keeps working perfectly fine for a few minutes, then stops refreshing the IP and prints: IPShowX[14917] *** NSTimer discarding exception '*** -[NSCFDictionary setObject:forKey:]: attempt to insert nil value' that raised during firing of timer with target 34e410 and selector 'getGameIP:' every 3 seconds (what's my NSTimer's interval). It's my first Cocoa application and I don't really understand the problem. My application works like this: - On awakeFromNib it sets up the timer and executes my IP-refreshing method named getGameIP for the first time - Every 3 seconds, the timer executes the mentioned getGameIP method, parses netstat's output and changes my NSTextField's value to the parsed IP This is how my class' .m file looks like: http://ipshowx.pastebin.com/ARFR3HRr As you can see, getGameIP reads output of netstat -n. Then looks for .4000 in it. If it finds that substring, it extracts 4 preceding characters, then extracts characters that occur right after the . and finally passes them to the text field. Otherwise the method sets the text field's value to -. I tried googling the error but I couldn't find anything either related or helpful. I would greatly appreciate if anyone could take a look at my issue. Regards, kaziorvb ___ 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: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: Problems with repetetive execution of netstat using NSTask and NSTimer
On Apr 5, 2010, at 4:05 PM, Kazior Fukacz wrote: When I run it, it keeps working perfectly fine for a few minutes, then stops refreshing the IP and prints: IPShowX[14917] *** NSTimer discarding exception '*** -[NSCFDictionary setObject:forKey:]: attempt to insert nil value' that raised during firing of timer with target 34e410 and selector 'getGameIP:' every 3 seconds (what's my NSTimer's interval). It's my first Cocoa application and I don't really understand the problem. Well, I'm not sure how much you do understand. Cocoa container classes can't contain 'nil' values; they can only contain actual objects. Something, somewhere is attempting to insert a nil value into a NSMutableDictionary-derived object. This causes an exception to be raised. As a convenience, NSTimer catches and discards any exceptions which happen during execution of its selector, and logs the above message when it happens. It also, apparently, stops the timer from repeating subsequently. It will help in diagnosing this to run your program under the debugger. From Xcode's Run menu, enable Stop on Objective-C Exceptions. Then, when the exception occurs the debugger will suspend the program and allow you to investigate. You can see from the stack trace where exactly in your method the problem is happening. You can also check out some other program state (e.g. variable values) to see if that explains what's happening. I suspect you may be getting output from netstat that is not in pure ASCII. Then, 'string' will be nil and that will cascade through so that IPSubstr is nil and IPSplit is nil. Then, you're passing a nil value to [IPField setStringValue:]. By the way, are you using garbage collection? If not, then you're leaking several objects (those pointed to by 'netstat', 'pipe', and 'string'). Regards, Ken ___ 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: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: UpdateSystemActivity replacement in Cocoa?
Including it isn't enough, you still need to link it with your other
frameworks. I did this with a blank project and got no errors with a 64-bit
build. Anyways, the IOKit function is probably the better way to go :)
On Apr 5, 2010, at 2:16 PM, Andy O'Meara wrote:
On Apr 5, 2010, at 3:31 PM, Kevin Wojniak wrote:
Looks to me like it's still available for x86_64. Are you linking with the
CoreServices framework?
Kevin
Yeah, I've got:
#include CoreServices/CoreServices.h
void foo() {
UpdateSystemActivity( UsrActivity ); // Error: 'UpdateSystemActivity'
was not declared in this scope
}
Also, if I declare it, I get a link error saying the symbol doesn't exist.
It'd be nice to use UpdateSystemActivity(), but it seems Sean's IOKit method
the only way to proceed (thanks Sean!).
Andy
On Apr 5, 2010, at 12:36 PM, Andy O'Meara wrote:
Hey cocoa crew, quick question...
I'm looking for a Cocoa replacement for Carbon's UpdateSystemActivity()
since it appears to be unavailable under x86_64.
Any help or suggestion would be appreciated!
Thanks,
Andy
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Re: Modal Window with dynamic nstextfield
Oh dear?
Sent from my iPhone
On Apr 5, 2010, at 4:47 PM, Kyle Sluder kyle.slu...@gmail.com wrote:
On Mon, Apr 5, 2010 at 10:15 AM, Jeremy Matthews jeremymatth...@mac.com
wrote:
for (mmm=0;mmm150;mmm++)
{
[progressIndicator displayIfNeeded];
[progressIndicator setDoubleValue:mmm];
NSString *temp222 = [NSString
stringWithFormat:@%d,mmm];
NSLog(@string value is %d,mmm);
[statusText setStringValue:temp222];
}
Oh, dear.
I would highly recommend reading the Threading Programming Guide:
http://developer.apple.com/Mac/library/documentation/Cocoa/Conceptual/Multithreading/Introduction/Introduction.html
--Kyle Sluder
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Re: Modal Window with dynamic nstextfield
On Mon, Apr 5, 2010 at 3:12 PM, Jeremy Matthews jeremymatth...@mac.com wrote: Oh dear? Yeah. It's a pretty heavy topic. Your use of a for loop inside a modal runloop to perform a lengthy operation leads me to believe you'll be starting at the ground level. Please read through the Threading Programming Guide. It probably won't answer all the questions it raises, but it will make you more informed about how to perform lengthy operations within an event-driven GUI framework, and enable you to ask better questions. --Kyle Sluder ___ 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: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: Modal Window with dynamic nstextfield
On Apr 5, 2010, at 6:18 PM, Kyle Sluder wrote: On Mon, Apr 5, 2010 at 3:12 PM, Jeremy Matthews jeremymatth...@mac.com wrote: Oh dear? Yeah. It's a pretty heavy topic. Your use of a for loop inside a modal runloop to perform a lengthy operation leads me to believe you'll be starting at the ground level. Back to basics... Please read through the Threading Programming Guide. It probably won't answer all the questions it raises, but it will make you more informed about how to perform lengthy operations within an event-driven GUI framework, and enable you to ask better questions. I love asking better questions - if only I knew what those were. --Kyle Sluder thx ___ 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: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: How do I get a file reference w/o relying on the path?
On Sat, 3 Apr 2010 18:31:03 -0700, Jens Alfke said: Brad, what you want is a bookmark (in 10.6) or an alias reference. Aliases didn't have a Cocoa API until 10.6, but the procedural API isn't hard to use. There is the 3rd party NDAlias wrapper, which works quite well: http://github.com/nathanday/ndalias On Sun, 4 Apr 2010 12:28:59 -0500, Ken Thomases said: Sorry. I probably shouldn't have said deprecated. Aliases are not officially deprecated, as far as I know. Perhaps superseded is a better word. It likely won't be deprecated for a long long time either, just like the Resource Manager. Many file formats (including QuickTime's .mov) store aliases and so Apple needs to keep this functionality forever. -- Sean McBride, B. Eng s...@rogue-research.com Rogue Researchwww.rogue-research.com Mac Software Developer Montréal, Québec, Canada ___ 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: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: Multi Window cocoa application
Depending on what you need to communicate and why, you might be able to use the NSNotificationCenter to meet your needs. John On Saturday Apr 3 4:22 PM, at 4:22 PM, Bharadwaj Parthasarathy wrote: Hi, I am currently working on porting an existing open source windows application to mac OSX. I am fairly new to cocoa programming. The application involves opening a new window for a specifying the parameters of the simulation. The second window has about 20 textboxes and cannot be a modal window. I have the XIB files and I got the windows working together somehow, but needs a lot of fixing. If there are multiple windows in an application, how do I pass values and messages between them? Apple developer library does not have an example source code and many internet sources point to /Developer/Examples/InterfaceBuilder/SimpleMultiWindow which is apparently not present in leopard. If some one has this example, that would be great. Also, this example being removed hints that there is a new and better way to do it? I would appreciate if someone can pass on resources or sample code on working with multiple windows in a cocoa application. Just to clarify, this is not a document based application. You can reach me at barbi dot bruce at gmail Thanks, B ___ 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: http://lists.apple.com/mailman/options/cocoa-dev/johnbaldwincocoa%40gmail.com This email sent to johnbaldwinco...@gmail.com ___ 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: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: Finding managed objects by URI representation
On Sun, 4 Apr 2010 23:14:20 +1000, Gideon King said: I have some queries that used to look up objects based on an elementID attribute, which used to be my unique identifier for objects, created when the objects were inserted or loaded. I use this pattern also. I am now moving away from that and using the standard managed object IDs and reference objects. Why? All the reasons you and Ben have been discussing is exactly why I find it much easier to just have my own unique identifier. The downsides are: 1) takes a little more space in the store (and on disk and in RAM) 2) is slower to fetch against vs using the permanent NSManagedObjectID. I'm curious why you are switching. I have thought about doing the same, but it just seems like way more work for little benefit. -- Sean McBride, B. Eng s...@rogue-research.com Rogue Researchwww.rogue-research.com Mac Software Developer Montréal, Québec, Canada ___ 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: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: How do I compare two NSDates using NSPredicate Core Data
On Sun, 4 Apr 2010 23:15:16 -0400, Michael A. Crawford said: Thus far I've gotten away with using -predicateWithFormat and scalar values. I now need to compare a couple of NSDate instances but am not sure how to code it up with NSPredicate. Consider me a 'visual' learner. I'm pretty sure you can use just , , ==, etc. with NSDates in NSPredicates. -- Sean McBride, B. Eng s...@rogue-research.com Rogue Researchwww.rogue-research.com Mac Software Developer Montréal, Québec, Canada ___ 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: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: UpdateSystemActivity replacement in Cocoa?
On Mon, 5 Apr 2010 15:02:49 -0700, Kevin Wojniak said: Including it isn't enough, you still need to link it with your other frameworks. I did this with a blank project and got no errors with a 64- bit build. Anyways, the IOKit function is probably the better way to go :) IIRC, UpdateSystemActivity was accidentally/incorrectly excluded from 64 bit on some older SDK, I think the 10.5 SDK. That might be why it works for you and not him. -- Sean McBride, B. Eng s...@rogue-research.com Rogue Researchwww.rogue-research.com Mac Software Developer Montréal, Québec, Canada ___ 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: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: UpdateSystemActivity replacement in Cocoa?
Yep, you're right. I built against 10.5 SDK and got the same problems. On Apr 5, 2010, at 5:06 PM, Sean McBride wrote: On Mon, 5 Apr 2010 15:02:49 -0700, Kevin Wojniak said: Including it isn't enough, you still need to link it with your other frameworks. I did this with a blank project and got no errors with a 64- bit build. Anyways, the IOKit function is probably the better way to go :) IIRC, UpdateSystemActivity was accidentally/incorrectly excluded from 64 bit on some older SDK, I think the 10.5 SDK. That might be why it works for you and not him. -- Sean McBride, B. Eng s...@rogue-research.com Rogue Researchwww.rogue-research.com Mac Software Developer Montréal, Québec, Canada ___ 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: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: Finding managed objects by URI representation
You know you might just be right. The core problem was that I was using the value that I had generated as my reference object, because of my lack of understanding about it needing to be consistent for a particular managed object, but different for different objects (even if they had been loaded from the same store). And then I thought the managed object IDs were unique identifiers, but now understand that they change between creation and storage, and are therefore not like primary keys. So maybe I overreacted to take my identifiers out altogether. I could move my managed object ID to a different attribute in my store, and have my own id written out when I need to, and when I need to store and load relationships, just do them via the IDs. and not the managed object IDs. Sometimes it's difficult to see the woods from the trees. Thanks Gideon On 06/04/2010, at 10:00 AM, Sean McBride wrote: On Sun, 4 Apr 2010 23:14:20 +1000, Gideon King said: I have some queries that used to look up objects based on an elementID attribute, which used to be my unique identifier for objects, created when the objects were inserted or loaded. I use this pattern also. I am now moving away from that and using the standard managed object IDs and reference objects. Why? All the reasons you and Ben have been discussing is exactly why I find it much easier to just have my own unique identifier. The downsides are: 1) takes a little more space in the store (and on disk and in RAM) 2) is slower to fetch against vs using the permanent NSManagedObjectID. I'm curious why you are switching. I have thought about doing the same, but it just seems like way more work for little benefit. ___ 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: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: Problem with NSData
On 06/04/2010, at 1:12 AM, McLaughlin, Michael P. wrote: In normal operation, getDataSz takes in a buffer allocated by an STL vector in the following call: [mySubtaskServer getDataSz:my_vec[0] ofSize:dataSize]; If (just for testing), I replace the argument, data, with a local malloc buffer (in getDataSz) and free it before exiting, then I do not see this error. I don't see any allocation (of my_vec) going on here anywhere. Show that code. It seems you're simply supplying the address of a (possibly uninitialized) variable. That will fail in the way you've indicated. --Graham ___ 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: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Wondering about that iPad page curling
I got my hands on an iPad today. I was really impressed with the built-in book reader. When you flip the page while holding your finger down, the page will curl and follow your finger. Very impressive! Anybody has any idea how one would be able to achieve such effect? -Laurent. -- Laurent Daudelin AIM/iChat/Skype:LaurentDaudelin http://nemesys.dyndns.org Logiciels Nemesys Software laurent.daude...@gmail.com Photo Gallery Store: http://laurentdaudelin.shutterbugstorefront.com/g/galleries ___ 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: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: Wondering about that iPad page curling
CIFilter has a page curl transition effect. Just map the 't' value to the mouse/finger location. --Graham On 06/04/2010, at 10:55 AM, Laurent Daudelin wrote: I got my hands on an iPad today. I was really impressed with the built-in book reader. When you flip the page while holding your finger down, the page will curl and follow your finger. Very impressive! Anybody has any idea how one would be able to achieve such effect? ___ 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: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: Wondering about that iPad page curling
On 6 Apr 2010, at 01:55, Laurent Daudelin wrote: I got my hands on an iPad today. I was really impressed with the built-in book reader. When you flip the page while holding your finger down, the page will curl and follow your finger. Very impressive! Anybody has any idea how one would be able to achieve such effect? http://blog.steventroughtonsmith.com/2010/02/apples-ibooks-dynamic-page-curl.html -- Gleb Dolgich http://pixelespressoapps.com/decloner Decloner -- find and remove duplicate files on your Mac___ 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: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: Wondering about that iPad page curling
On Apr 5, 2010, at 18:02, Graham Cox wrote: CIFilter has a page curl transition effect. Just map the 't' value to the mouse/finger location. --Graham On 06/04/2010, at 10:55 AM, Laurent Daudelin wrote: I got my hands on an iPad today. I was really impressed with the built-in book reader. When you flip the page while holding your finger down, the page will curl and follow your finger. Very impressive! Anybody has any idea how one would be able to achieve such effect? It's that easy? -Laurent. -- Laurent Daudelin AIM/iChat/Skype:LaurentDaudelin http://nemesys.dyndns.org Logiciels Nemesys Software laurent.daude...@gmail.com Photo Gallery Store: http://laurentdaudelin.shutterbugstorefront.com/g/galleries ___ 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: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Keeping a progress window showing active
Hi, My app currently needs to show a progress bar during startup (Yes, I know - I'm working on a better solution so this isn't going to be needed at all longer term). The problem I'm having is how to set this up correctly with respect to its active appearance. Other apps generally seem to use a normal modeless dialog type window with the full height title-bar with the name of the app in it. I do that, and also put the window into the 'modal dialog' layer (also tried 'status window' layer). At first all is well, but as my app starts up and creates its first document window, that steals focus from the progress window which, though it remains in front, becomes inactive in appearance. Ideally I'd like to be able to have it remain having its active appearance even as the opened document also has an active appearance (or perhaps for the document to open inactive and become active when the progress bar completes and its window is hidden). Is there a way to do this without subclassing the window itself and forcing the active state using an override to the private _hasActiveControls method? For obvious reasons I dislike that solution. I also tried using a utility style window and that does work for keeping the controls active but has the wrong title bar appearance. Also, while I'm on the subject, what is the Non-Activating checkbox in IB for NSWindow for? It doesn't seem to be listed as one of the flags in the Window Style masks. --Graham ___ 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: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: Wondering about that iPad page curling
Except CIFilter doesn't exist on the iPad in a public SDK setting. On Apr 5, 2010, at 8:22 PM, Laurent Daudelin wrote: On Apr 5, 2010, at 18:02, Graham Cox wrote: CIFilter has a page curl transition effect. Just map the 't' value to the mouse/finger location. --Graham On 06/04/2010, at 10:55 AM, Laurent Daudelin wrote: I got my hands on an iPad today. I was really impressed with the built-in book reader. When you flip the page while holding your finger down, the page will curl and follow your finger. Very impressive! Anybody has any idea how one would be able to achieve such effect? It's that easy? -Laurent. -- Laurent Daudelin AIM/iChat/Skype:LaurentDaudelin http://nemesys.dyndns.org Logiciels Nemesys Software laurent.daude...@gmail.com Photo Gallery Store: http://laurentdaudelin.shutterbugstorefront.com/g/galleries ___ 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: http://lists.apple.com/mailman/options/cocoa-dev/alex%40webis.net This email sent to a...@webis.net Alex Kac - President and Founder Web Information Solutions, Inc. In the Country of the Blind, the one-eyed man is king. --Desiderius Erasmus ___ 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: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: Keeping a progress window showing active
On Apr 5, 2010, at 18:31, Graham Cox wrote: My app currently needs to show a progress bar during startup (Yes, I know - I'm working on a better solution so this isn't going to be needed at all longer term). The problem I'm having is how to set this up correctly with respect to its active appearance. Other apps generally seem to use a normal modeless dialog type window with the full height title-bar with the name of the app in it. I do that, and also put the window into the 'modal dialog' layer (also tried 'status window' layer). Maybe you could do something hinky with a custom view that can become first responder in the progress window, and arrange to make the document window main but the progress window key. How many document windows are opening? I wonder if a different approach might make more sense to a user anyway: Display your freestanding progress window *until* the first document window appears. Then get rid of the separate progress window and, as each document window appears (one or more), display a progress sheet on each document window, showing how close *that* document is to being fully open and available. Something along that line. Also, while I'm on the subject, what is the Non-Activating checkbox in IB for NSWindow for? It doesn't seem to be listed as one of the flags in the Window Style masks. It means that clicking on the window when your application is behind other applications brings the window to the front, but leaves the application in the background. (See NSNonactivatingPanelMask -- IDK if there's anything similar that works for NSWindows.) ___ 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: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: Wondering about that iPad page curling
That would be a problem, wouldn't it? -Laurent. -- Laurent Daudelin AIM/iChat/Skype:LaurentDaudelin http://nemesys.dyndns.org Logiciels Nemesys Software laurent.daude...@gmail.com Photo Gallery Store: http://laurentdaudelin.shutterbugstorefront.com/g/galleries On Apr 5, 2010, at 18:32, Alex Kac wrote: Except CIFilter doesn't exist on the iPad in a public SDK setting. On Apr 5, 2010, at 8:22 PM, Laurent Daudelin wrote: On Apr 5, 2010, at 18:02, Graham Cox wrote: CIFilter has a page curl transition effect. Just map the 't' value to the mouse/finger location. --Graham On 06/04/2010, at 10:55 AM, Laurent Daudelin wrote: I got my hands on an iPad today. I was really impressed with the built-in book reader. When you flip the page while holding your finger down, the page will curl and follow your finger. Very impressive! Anybody has any idea how one would be able to achieve such effect? It's that easy? -Laurent. -- Laurent Daudelin AIM/iChat/Skype:LaurentDaudelin http://nemesys.dyndns.org Logiciels Nemesys Software laurent.daude...@gmail.com Photo Gallery Store: http://laurentdaudelin.shutterbugstorefront.com/g/galleries ___ 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: http://lists.apple.com/mailman/options/cocoa-dev/alex%40webis.net This email sent to a...@webis.net Alex Kac - President and Founder Web Information Solutions, Inc. In the Country of the Blind, the one-eyed man is king. --Desiderius Erasmus ___ 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: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: Keeping a progress window showing active
On 06/04/2010, at 12:03 PM, Quincey Morris wrote: On Apr 5, 2010, at 18:31, Graham Cox wrote: My app currently needs to show a progress bar during startup (Yes, I know - I'm working on a better solution so this isn't going to be needed at all longer term). The problem I'm having is how to set this up correctly with respect to its active appearance. Other apps generally seem to use a normal modeless dialog type window with the full height title-bar with the name of the app in it. I do that, and also put the window into the 'modal dialog' layer (also tried 'status window' layer). Maybe you could do something hinky with a custom view that can become first responder in the progress window, and arrange to make the document window main but the progress window key. I tried adding a non-drawing custom view that is initialFirstResponder, can become FR, and refuses to resign FR, but to no avail. It seems that making another window main/key will happen regardless of whether the existing key window has a view that refuses to resign. Since I'm otherwise just making use of the standard document-based app opening behaviour, there isn't an easy or obvious way to only make the document window main but not key (seems -makeKeyAndOrderFront: is being called internally at some point). I'll look into that though. How many document windows are opening? I wonder if a different approach might make more sense to a user anyway: Display your freestanding progress window *until* the first document window appears. Then get rid of the separate progress window and, as each document window appears (one or more), display a progress sheet on each document window, showing how close *that* document is to being fully open and available. Something along that line. Generally only one doc opens (just the initial 'untitled' doc) but the progress relates to some global setup that takes a little time to run. This is done in a second thread, so the normal startup happens in parallel. There isn't any lengthy setup per document in this case, though it's a nice idea otherwise. Also, while I'm on the subject, what is the Non-Activating checkbox in IB for NSWindow for? It doesn't seem to be listed as one of the flags in the Window Style masks. It means that clicking on the window when your application is behind other applications brings the window to the front, but leaves the application in the background. (See NSNonactivatingPanelMask -- IDK if there's anything similar that works for NSWindows.) Ah, right, it's a panel setting rather than a window setting, which is why I didn't see it in Window Style masks. Thanks for the clarification. --Graham ___ 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: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: Problems with repetetive execution of netstat using NSTask and NSTimer
On Apr 5, 2010, at 3:02 PM, Ken Thomases wrote: On Apr 5, 2010, at 4:05 PM, Kazior Fukacz wrote: When I run it, it keeps working perfectly fine for a few minutes, then stops refreshing the IP and prints: IPShowX[14917] *** NSTimer discarding exception '*** -[NSCFDictionary setObject:forKey:]: attempt to insert nil value' that raised during firing of timer with target 34e410 and selector 'getGameIP:' every 3 seconds (what's my NSTimer's interval). It's my first Cocoa application and I don't really understand the problem. Well, I'm not sure how much you do understand. Cocoa container classes can't contain 'nil' values; they can only contain actual objects. Something, somewhere is attempting to insert a nil value into a NSMutableDictionary-derived object. This causes an exception to be raised. I've seen this before with NSTask, typically when you run out of file descriptors. In a test app I just threw together, the exception is raised because NSTask is blindly trying to insert a nil NSFileHandle in an internal dictionary (the key is _NSTaskOutputFileHandle). If NSTask asserted that it requires a non-nil NSPipe/NSFileHandle, you'd get a much more useful error, but you can catch at least some of these by asserting that pipe != nil yourself. [...] I suspect you may be getting output from netstat that is not in pure ASCII. Then, 'string' will be nil and that will cascade through so that IPSubstr is nil and IPSplit is nil. Then, you're passing a nil value to [IPField setStringValue:]. Probably not in this case; -[NSString initWithData:encoding:] will always succeed when you use NSASCIIStringEncoding, unfortunately. By the way, are you using garbage collection? If not, then you're leaking several objects (those pointed to by 'netstat', 'pipe', and 'string'). Yeah, I suspect that the pipes (and corresponding NSFileHandles) are indeed leaking, and that's the real problem. You may also want to create and launch NSTask instances inside an exception handler, since it and NSFileHandle/NSPipe can raise some unexpected exceptions. -- Adam ___ 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: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Alternative Location of Cocoa ID3 Framework??
I've been searching google for a while, and have repeatedly stumbled across mention of an Objective-C ID3 framework constantly linked to http://drewfamily.homemail.com.au/Cocoa_-_ID3Tag_framework.html However, I must be really late because this project seems to have fallen off the face of the earth. Constant 404's and dead links. Sorry if this is somehow inappropriate for the list, but I was wondering if anybody here knows ANYTHING about this framework and if I might be able to get my hands on it. Thanks in advance, -Chase ___ 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: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
