Re: Maximum image size ?

I am rendering sound sonagrams as contents of CALayers which have dimensions of height 1024 pixels and width above 3 pixel. No problem as long as you don’t use CIFilters. With them roughly 12000 pixels will work and larger images won’t get the filters applied to. I have solved that by using

Re: 10.6: Check Box Cells in NSTableViews always editable!

Hi, have you changed the binding conditionally sets enabled respectively conditionally sets editable ? That did the trick before on 10.5 volker Am 31.08.2009 um 20:21 schrieb Gerd Knops: Seems that in Snow Leopard the "editable" setting in the column attributes is ignored for Check Box Ce

Re: Making an NSAlert be displayed when the User attempts to delete a row from an NSOutlineView when it has children.

Hi, NSArray *selectedRow = [treeController selectedObjects]; you get an NSArray -> so you should enumerate through the objects of the array NSInteger childrenCount = [selectedRow.children count]; Does not get the children count of anything but the NSArray, which it doesn't have.

Re: @property (retain) - Do I need to release in dealloc?

Hi, release is necessary, as others already told you. One clarification that I got on a similar post is: -dealloc should always access instance variables directly; it should not call accessor methods. Currently this is impossible to do with synthesized instance variables, but that is consid

Re: Retrieving the selected object in an NSOutlineView.

Hi, try to call representedObject on one of the items returned by selectedObjects - this gives you the object as it sits in your object graph (probbly still CoreData). Then you can use the keyPath for children on the returned object. Et voila. Volker Am 16.09.2009 um 17:20 schrieb Joshua

Re: Populating TableView Via Button.

Hi, best solution would be to update the datasource... Swapping views just for the sake of displaying new data is not something one should do. Have you read up on how to implement a datasource for NSTableView? Maybe you try to follow this old, but still useful tutorial: http://www.cocoade

Re: Best Design Advice

Hi, Am 14.11.2009 um 22:25 schrieb David Blanton: Should not the app be installed in a particular location so that it starts when the user logs in? You can add any app, located at any location (nearly at any) to the Startup Items of a user and the app gets started. No need to be in a sp

Re: NSTableView: no display until header clicked

Hi, without knowing how you add objects to the ArrayController - and when, and without knowing what and how is bound exactly - guessing is most that can be done. It seems the bindings are okay from the beginning, but the changes to the ArrayControllers content are only observed when the s

Re: NSTableView: no display until header clicked

er (which is my NSDocument subclass). In the document's init method, I make phases an empty NSMutableArray, and in the document's windowControllerDidLoadNib method, I populate that array with data.) -Dave On Oct 5, 2009, at 9:40 AM, Volker in Lists wrote: Hi, without knowing h

Re: [Solved] Re: NSTableView: no display until header clicked

Hi, maybe it works even without these two lines - how are you populating the array controller in code ? Cheers, Volker Am 05.10.2009 um 19:19 schrieb David Hirsch: That's right on the money: The array was indeed bound to the contentArray in IB (otherwise it would never have been able to

Re: Triggering a Method when a Core Data Property is Altered.

Josh, depending on where you need to get a notification: a) within the same NSManagedObject or a relationship: http://developer.apple.com/mac/library/documentation/Cocoa/Reference/Foundation/Protocols/NSKeyValueObserving_Protocol/Reference/Reference.html#//apple_ref/occ/clm/NSObject/keyPathsFor

Re: Triggering a Method when a Core Data Property is Altered.

see, how do you observe a CoreData Property? From: Volker in Lists To: Joshua Garnham Sent: Wednesday, 7 October, 2009 8:11:48 Subject: Re: Triggering a Method when a Core Data Property is Altered. Hi, you have to add an observer to the CoreData entity - which is probably what you haven

Re: Triggering a Method when a Core Data Property is Altered.

add the Observer in an NSManagedObject sub-class and call self? Also in the email before last I sent the code that I had tried. Cheers, Josh. From: Volker in Lists To: Joshua Garnham Cc: cocoa-dev@lists.apple.com Sent: Wednesday, 7 October, 2009 16:09:55 Subject: Re: Triggering a Method when

Re: Triggering a Method when a Core Data Property is Altered.

Hi. Is this any better? See bewlo, and in addition: Did it work? It shouldn't have worked :-/ On NSManagedObject side: According to Apple the initWithEntity should not be overridden (http://developer.apple.com/mac/library/documentation/Cocoa/Conceptual/CoreData/Articles/cdCreateMOs.html )

Re: Strange Core Data problem after upgrade

Hi, problem A: have you made sure you have set the class in the data modeler correctly for that ManagedObject? When googling for your error message I do receive such problems that were fixed by setting the proper custom class name. Cheers, Volker __

Re: Triggering a Method when a Core Data Property is Altered.

Hi, awakeFromFetch is only called when the object is loaded from the persistent store (=fetched). So all newly inserted objects are not observed. this might be one reason for not getting triggered for rows 2/3 if they were not fetched but created. Otherwise I have no idea why it doesn't

Re: Strange Core Data problem after upgrade

Hi, you need to add a NSNumberFormatter to the text field. Number/String conversion does not happen automatically. Volker Am 08.10.2009 um 13:49 schrieb Rui Pacheco: Hi, Problem A, Yes, all classes are set correctly in the data modeller. Also, regarding problem B, this is getting strange

Re: Strange Core Data problem after upgrade

Hi, I had to do that in 10.5 - I think - but that is vague memory collected by my sieve-brain - it wasn't like that in 10.4. Volker Am 08.10.2009 um 15:07 schrieb Rui Pacheco: True, that seems to be the problem. Is this new? I've another NSTextField bound to a property of type NSNumber

Re: Hiding tab view items

Hi, there a different roots to success a) roll your own Tabs instead of Segmented cell in combination with a tabless NSTabView b) Add/remove tab items on demand Both are fairly easy to achieve with some pitfalls like view retains and such. I am using the b) route for something similar

Re: Default Core Data errors

Hi Rick, any messages in the console? Usually you should get more information there. Also, what happens when run from Xcode in debug settings? Maybe activate an objc_exception_throw breakpoint in advance. Cheers, Volker Am 14.10.2009 um 10:07 schrieb Rick Mann: > I'm having some issues with m

Re: Default Core Data errors

Rick, which StoreType are you using? If it is XML it could be worth looking into the raw xml. Otherwise more information on the model and any special methods (if any) could be useful. Any changes to the standard CoreData template provided by Xcode? Is the file readable at all from finder usin

Re: Default Core Data errors

Rick, you can use po and than most of what you are used in Obj-C like you would use in NSLog. Or just use NSLog and any of the properties a NSError has. Cheers, Volker Am 14.10.2009 um 19:30 schrieb Rick Mann: > > On Oct 14, 2009, at 09:57:58, Kyle Sluder wrote: > >> On Wed, Oct 14, 2009 at

Re: Why getting two awakeFromNib messages??

Hi, you load the second nib from the main controller i guess. Thereby you set the instance of your main ontroller as owner, thus it gets the awakeFromNib call. Set your second controller as owner or nil (if you have an instance of your second class in your NIB as file owner (!)). Cheers,

Re: Preparing for MOM versioning in version 1

Hi Fritz, I have it running that way in one of my applications. The user base is small (< 50 users), so I might not have yet had the chance to discover magic not happening. I also invested a lot of time in the model process, to avoid too many changes. My changes, that worked well, include

Re: Snow Leopard: Problem with searching .flv files.

Hi, for me it is: com.adobe.flash.video acquired using the command line and the command: mdls path/filename Cheers, Volker Am 11.11.2009 um 14:15 schrieb Shashanka L: Hello, My application is failing to catch the .flv files while searching in Snow Leopard (10.6.1). I am using the 'spotlig

Re: [Q] copy operation and authorization

Hi, I am using this and I guess it is the recommended way of doing. Works well: http://developer.apple.com/mac/library/samplecode/BetterAuthorizationSample/index.html Volker Am 12.11.2009 um 18:44 schrieb JongAm Park: Hello, I'm trying to copy a file from a desktop to a /Library/Applicati

Re: baseURL problem with +fileURLWithPath:

Robert, when/where do you call [url path]? It may be released at that moment and thus display garbage! What happens if you omit the call to autorelease when creating url ? Volker Am 18.05.2010 um 13:52 schrieb Robert Monaghan: > Hi Mike, > > This is pretty trivial.. I have a string that is c

Re: Help w/ first step of creating Help Book for app

Hi Shane, try the special mailing list Apple has going for help authoring: Apple-help-authoring Probably full on topic there! Cheers, Volker ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator com

Re: NSDocument Problems

Hi, these all rely on the ResponderChain - so, if one of your ANalyzerDocuments is front-most, it must implement these methods to enable the menu commands. If your analyzer document is always coupled with a "normal" document, you may relay the calls to that. volker Am 21.02.2011 um 15:28 schr

Re: Core Data - synchronize ManagedObjectContexts - save date

Hi, some code may help! When using its own context for a NSOperation it works very well for me. I never call save when in the NSOperation. Volker Am 01.03.2010 um 00:20 schrieb Rainer Standke: > Hello, > > I have an document-based CoreData application that uses an NSOperation to > manipulate

Re: Core Animation vs. Basic Cocoa Graphics

Hi, are you drawing ALL of your paths whenever the user scrolls or only the ones that are within the visible rect? If the first, you may try to change that to the second and gain lots of performance. I draw a sound wave view and when drawing all of it while zoomed into it, it is sooowww. Bu

Re: Making an NSOutlineView by Default have 1 Parent and 1 Child.

Hi, on startup check if you have already data in your data container. If no - create data accordingly to your needs so it is displayed in the outlineview. You might consider phrasing your question differently, and describe what you have tried already. It would make helping you more easy.

Re: Core Data Crash on MOC Release

Hi, do you have any observers or such on objects inside the moc (speak on entities)? I had a hard to trace down crash similar to yours and in my case I just needed some cleanup work on -didTurnToFault for the entity. Are there relationships established and not "destroyed" again completely

Re: CoreData: sorting on a computed attribute

Hi Laurent, when I faced a similar problem - in my case I needed to filter data acquired fromCoreData in a TableView for a field value that wasn't part of the model, but existed as an ivar in the NSManagedObject subclass - I used the following: [self.sessionController setFilterPredicate:[NSPred

Re: NSTimer help

Hi Eric, - (BOOL)windowShouldClose:(id)window is the correct implementation with the method name implicating a question that is answered either YES or NO. Your method in its current form is not called, which you could have easily worked out using a single NSLog(@"I do work sometimes"); wi

Re: splash screen how to?

Hi Nick, search for BorderlessWindow in general or narrow down your search to CoriolisWindow or even better FancyAbout supplied by Apple. Sorry for not including the links directly, but I have both examples on my disk and was far too lazy to type them into Google. Which is another good th

Re: Display Mail type outlineView numbers

Hi there, see this as an example: http://www.bdunagan.com/2008/11/10/cocoa-tutorial-source-list-badges-part-2/ Cheers, Volker Am 01.01.2009 um 15:59 schrieb vince: Thanks for the help. I would like to display the small blue circle and associated numbers that refer to the amount of entries

Re: Mail Activity sliding widget question

Hi, you can animate a NSSplitView easily to achieve this effect. I use the following code to animate the resize of a split view after the users clicks a button: - (IBAction)toggleSplitDisplay:(id)sender { NSSize newSize = [detailSplit frame].size; [NSAnimationContex

Re: NSPredicateEditor

Hi, works for me on 10.5.5 just as well as via code and calling the appropriate methods. At least that was my experience from before christmas. Want me to retry on 10.5.6? Volker Am 15.01.2009 um 14:14 schrieb Chris Idou: Is it just me or does the "enabled" checkbox in IB for NSPredi

Re: Displaying multiple core data relationships in NSOutlineView

Hi, why don't you have an abstract class that holds the children/parent relationships and make different subclasses for different data types that all inherit from your abstract class. As far as I understand your problem, that should solve it. I have a similar solution working well for me.

Re: Getting pixel color from NSView

Hi, one possibility, even so I doubt it is the most elegant, is to create a BitmapRepresentation of the view and get the color from this image. More elegant would be, if you would be able to use the information from the "tiling method", for example by storing the random colors in an array

Re: Matching String With ObjectForKey?

Hi, you compare objects with == but what you really want is isEqualToString: since you want to compare the string contents. Cheers, Volker ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator commen

Re: what to do with MAC address...

Hi there, as a quick pointer - from one of my apps licensing code. Assuming that MACAddress is the beasty UInt8 struct, the following should work: NSString *addressString = [[NSString alloc] initWithFormat:@"%02x: %02x:%02x:%02x:%02x:%02x",MACAddress[0], MACAddress[1], MACAddress[2], MAC

Re: Creating Subclass in Core Data

Hi Paul, I recommend not use the add: / addChild: methods of the TreeController, but create yur own methods for that. In each instantiate an object of the entitytype you want as parent/child. See http://developer.apple.com/DOCUMENTATION/Cocoa/Conceptual/CoreData/Articles/cdCreateMOs.html#/ /

Re: [Q] Re: NSPersistentStore -addPersistentStoreWithType

Hi, i am usually happy with the quick check if a file exists and don't rely on any entity counts within the first view milliseconds of startup. If you have a fixed location (say URL), the check is really easy to implement. If you use a document based app, you have more elegant possibiliti

Re: Key Paths @count and mutablestrings

Hi, Is there an easy way to access the existing Array Controller from the code? I have a suitable Array Controller called Purchase Order Items Array Controller in IB, but I don't see a way to reference this in the code. The Array Controller is bound to the selection of another Array Con

Re: View swapping questions

Hi Robert, sounds reasonable, but no need to store any control states as far as I can tell (they are not released, just "taken out of view"). There is an example available demonstrating this w/ some nice CoreAnimation transition > BasicCocoaAnimations found on the online developer example

Re: NSArrayController, bindings and NSUserDefaults

Hi, you need an formatter - NSUnarchiveFromData and then it works rather well. I store supplementary information that each user can edit in NSUserDefaults. The info is maintained in NSTableViews and stored as an Array of NSMutableDictionary. Works really well. Volker Am 09.11.2008 um 20:

Re: NSCollectionView woes

Hi Cem, the CollectionView needs only to be pointed to the cars ArrayController and uses a rather obfuscated way of binding each of its subviews fields to the appropriate car entries. you will have to bind your prototype view controls to CollectionView.representedObjects."key". The Collec

Re: Another NSOutlineView question

Hi, you should be able to detect a double click and call a method then that either temporarily allows the selection or directly starts the edit mode. I do have a similar setup - don't do editing, but I use the double click action via bindings to attach notes to such an unselectable item.

Re: NSArrayController, NSPopupMenu, defaults and arrangedObjects

Hi Steven, as far as I know, the fect happens in the next run loop. So you would need to set the selection then. This is possible for example via the performSelector:withObject:afterDelay: and a delay of 0.0 on self (?). Cheers, Volker Ah, I understand. I've implemented the correc

Re: Problems with multiple selection and NSArrayController

Hi, does the detail arraycontroller show all categories and selects the ones contained in the set of your selected master rows? Can't you just display only the detail categories that are within the set of the selected master? This would be easy to do even with multiple master objects sele

Re: Distributing apps

Hi, when you build your app in Xcode with the Release target setting, you will get your app with the standard app icon in the build folder. This folder usually resides within your project directory. Via the targets Get Info panel you can set app icon - which you have to supply yourself, t

Re: Blunt edges to Window

Hi, do you have an example? A good source for information might be Apple Guide to the UI or HIG -> available through your Xcode installations documentation. Cheers, Volker Am 11.12.2008 um 18:41 schrieb Arun: Hi, How to create a blunt corned window edges? Is there any control which wi

Re: Problem in save and open on Core Data Document Based application

Hi, the message says that the data model in the file you try to open is different than the one you have in your app. As far as I can follow you, both apps use the same file type and the former is always trying to open the others file. Of ocurse, then it complains about the different model

Re: EXC_BAD_ACCESS on NSImageView::setImage

Hi, retainCount is not in anyway useful when debugging - I had many cases of rc > 5 with the object being gone the next instance. your error sounds like you loose the image at some point in time. retain it and use Instruments to see if you leak or over alloc. Volker Am 14.03.2009 um 01:2

CABasicAnimation causes crash on close/order out of window

Hi list, a similar problem was already reported with no answers in january (?) 2009 - layers with CIFilter animations running may crash the app on a window close call. If the animation is not running, no crash happens. I have a Layer-Backed NSScrollView displaying a couple of layers with

Re: Autosaving the selection in an NSTableView

Hi Martin, I archive the selectionIndexes of the array controller and store them within thecore data document's metadata. I think you need to serialize (archive) the selectionIndexes to be able to save it either in NSUserDefaults or anywhere else. When loading a CD document I check if the

Re: Table with all Key-Value Pairs

Hi Gerriet, I recently played around with NSDictionaryController and it was simpler than I thought. You should be able to use the selection of your array controller as source for your Dictionary controller, and then bind the columns of a table view to "key" and "value" of your dictionary

Re: performSelectorOnMainThread primitives for withObject

Hi Torsten, do you have more details on what the main thread implements and what you expect it to do, but doesn't do? I am using similar constructs and they work . Volker Am 22.04.2009 um 18:13 schrieb Torsten Curdt: Hey folks, Is this supposed to work or not? - (void) setActivated:(B

Re: what am I missing with NSString ?

Hi, from the code listed I cannot tell if you alloc'ed memory for your NSString at all? What is the goal you try to achieve? If you just want to store a single file path... with a global NSString do as along the lines of: [rawFileName release]; rawFileName = [[NSString alloc] initWithStri

Re: NULL Outlets in one file work in another

Hi, are you using - (void)applicationDidFinishLaunch:(NSNotification *)aNotification or - (void)applicationDidFinishLaunching: (NSNotification *)aNotification ? The first is not a valid delegate method, the second is. Have you connected your AppDelegate as delegate of your app - can it rec