Hi everyone, I have a Core Data document based app that I've been
working on for a while and I now want to change some of the view
drawing to use CALayers. The trouble I'm having is that when I set a
view's wantsLayer = YES, I end up getting EXC_BAD_ACCESS.This
happens when I try to
On Sun, May 31, 2009 at 9:37 PM, Andy Lee ag...@mac.com wrote:
On May 31, 2009, at 8:51 AM, Uli Kusterer wrote:
Another approach would be to try changing the class of your content view in
Interface builder. Simply click the background of the window, that should
show the content view in the
Are you registering for any notifications? It looks like it's
crashing while trying to notify an object.
On Jun 1, 2009, at 12:31 AM, Kevin Ross wrote:
Hi everyone, I have a Core Data document based app that I've been
working on for a while and I now want to change some of the view
Hello List,
I was customizing my Application Main Menu and I deleted Edit menu from
Main Menu.
Now My Application needs to add Edit Menu in Main Menu.
I am not able to drag NSMenu to main menu. and i am not able to do it by
coding as well.
So, how can i add this Menu Item ?
Thanks.
On Mon, Jun 1, 2009 at 12:39 AM, Vijay Kanse vijay.ka...@avinashi.com wrote:
I am not able to drag NSMenu to main menu. and i am not able to do it by
coding as well.
Really? There's an Edit menu in the IB library which you should be
able to just drag to the main menu in your MainMenu.nib. If
Here is the setup ...
Table view with 3 columns.
In tableView:objectValueForTableColumn:row: I return an
NSAttributedString, most of which use 2 different fonts.
To set the row height I have implemented the delegate method :-
-(float)tableView:(NSTableView *)tableView
Sorry for My Question,
Actually i was dragging NSMenu from Library and I was trying to Add it as
Sub Menu.
Thanks For guiding me right way.
On Mon, Jun 1, 2009 at 2:49 PM, Kyle Sluder kyle.slu...@gmail.com wrote:
On Mon, Jun 1, 2009 at 12:39 AM, Vijay Kanse vijay.ka...@avinashi.com
wrote:
On Mon, Jun 1, 2009 at 6:04 AM, Chris Hanson c...@me.com wrote:
On May 30, 2009, at 11:18 PM, Ammar Ibrahim wrote:
On Sun, May 31, 2009 at 6:16 AM, Chris Hanson c...@me.com wrote:
The best way to ensure your daemon or agent is always running is to have
it
run via launchd.
Start by
Hi ,all
In Cocoa, if there is [super init];, there will be [super dealloc];
correspondently at the end of this class.
But I find that sometimes if there is not [super init];, there will be
[super dealloc]; correspondently too.
I puzzled. When should use the [super dealloc];? Could anyone list
why should your app stops responding?
Do you want to detect time-outs (network-times, IO-timeouts, ...) or
will your app be crap and full with bugs?
On 01 Jun 2009, at 13:19, Ammar Ibrahim wrote:
On Mon, Jun 1, 2009 at 6:04 AM, Chris Hanson c...@me.com wrote:
On May 30, 2009, at 11:18
On 01/06/2009, at 9:52 PM, Bright wrote:
When should use the [super dealloc];? Could anyone list all of
case.
Whenever you have overridden -dealloc. Simple as that.
When do you override dealloc? When there are instance member variables
(ivars) that must be released when your object is
You need to call [super dealloc] when you want to call the dealloc
method of the super of your class. (logical, isn't?).
Every class has default the next dealloc method:
-(void)dealloc {
[super dealloc];
}
But, when you want to release classes you have initialised in your
object,
On May 31, 2009, at 4:31 PM, Dominik Pich wrote:
Hi,
I use NSXMLParser to parse large XML files-- going good BUT :)
I cant get the parser to resolve the external entities from the DTD.
I googled and read documentation and older mails...
and I did set parser.shouldResolveExternalEntities = YES
Hi, This is my first Cocoa App and I'm new to programming in anything other
than scripting languages, so please bear with me.
Goal: (embarrassingly simple) Show the about menu in a Tiger. Everything
works find in Leopard.
Problem: I'm developing a NSStatusbar background (LSUIElement = true) app.
On Sun, May 31, 2009 at 7:08 PM, Ken Tozier kentoz...@comcast.net wrote:
Hi
I wrote an app that converts Word files into a simpler format by first
converting from .doc to html using scripting and Word's Save as Web page
command followed by using NSXMLDocument to extract the parts I need. I'm
On Sun, May 31, 2009 at 7:30 PM, Kyle Sluder kyle.slu...@gmail.com wrote:
On Sun, May 31, 2009 at 4:08 PM, Seth Willits sli...@araelium.com wrote:
Alright, well, either way I know it's not happening because it's not in the
console log.
You don't know it's not nil unless you check yourself.
On Mon, Jun 1, 2009 at 7:29 AM, Chris Jones littlemaca...@gmail.com wrote:
The error is: [NSCFDictionary setObject:forKey:]: attempt to insert nil
value. And the StandardAboutPanel does not appear.
[...]
I don't think it could get more simple, but I can't see where I'm passing a
nil value.
On Jun 1, 2009, at 2:50 AM, Peter Hudson wrote:
The problem appears when I try to select a row. Rows are not
selectable.
When I try to select a row I get the error message
NSConcreteMutableAttributedString addAttribute:value:range:: nil value
Break on objc_exception_throw and look at the
On 1 Jun 2009, at 12:58:17, Jelle De Laender wrote:
why should your app stops responding?
Do you want to detect time-outs (network-times, IO-timeouts, ...) or
will your app be crap and full with bugs?
There will always be unforeseen circumstances. Better safe than sorry,
right?
Just
On Mon, Jun 1, 2009 at 7:19 AM, Ammar Ibrahim ammar.ibra...@gmail.com wrote:
Great, so I understand from what you're saying that I can launch a GUI app
using launchd? I will look into it. Also, what if the application stops
responding? Is that something that launchd can detect?
As far as I
Thanks, Andrew,
I believe that Colin Gray got to the bottom of this at Stack Overflow:
http://stackoverflow.com/questions/916718/nsurlconnection-crashing-under-10-5-7
Dennis
Andrew Farmer wrote:
On 27 May 2009, at 18:20, Dennis Hartigan-O'Connor wrote:
I have a very similar problem: my
I have layer hosting view which hosts a single layer with several child
layers. Some child layers can be QTMovieLayers to display quick time movies.
Things work fine.
Now my main issue is that I want to add video controls (Play, Pause, time
Slider) to control the movie: Is there an already
my app has a scripts menu item (in the main menu bar). the items in
this menu correspond to applescript files the user has placed in my
application support folder. when the user selects one of these menu
items, i execute the appropriate script. i execute the script in a
(sub) task (NSTask). i
my app contains an NSSearchField in the toolbar of the various
document windows. and i have the various predicates of the search
field bound to iVars in my app. additionally, i have my own predicate
builder that lets the user build complex search predicates. when the
user has built a complex
why should your app stops responding?
Do you want to detect time-outs (network-times, IO-timeouts, ...) or
will your app be crap and full with bugs?
I wish my code never had infinite loops (Apple's address:) or
multithreaded deadlocks or other types of bugs... but sometimes sh*t
happens.
On Jun 1, 2009, at 9:29 AM, Ramakrishna Vavilala wrote:
Now my main issue is that I want to add video controls (Play, Pause,
time
Slider) to control the movie: Is there an already available
solution for
it?
Nothing that I'm aware of.
I have the following options:-
1. Create a sub-view
Yup -- that makes it tough to figure out with that bt, since the
problem doesn't appear to be in your code.
Can you post your objectValueXXX method implementation?
Can you also show the string in your array that you are setting as the
object value? (ie: print it in the debugger or
I'm not sure that this is the full story. My app Vienna implements
connection:willSendRequest: redirectResponse: at AsyncConnection.m: 396
http://vienna-rss.svn.sourceforge.net/viewvc/vienna-rss/trunk/2.3.0/AsyncConnection.m?view=markup
However, I'm seeing crash reports from users on 10.5.7,
Hi Ken,
The menu item unhighlights after the menu item's action is finished.
If user input should be blocked while the script is running, then you
should register for the NSTaskDidTerminateNotification and then drive
the main run loop forwards from within your menu item's action method,
On 5/29/09 2:25 PM, Ben Trumbull said:
You can download the debug version of Core Data from ADC and use the
multithreading assertions.
Not if you're using 10.5.7 you can't. :( The 'Debug and Profile
Libraries' for 10.5.7 are still unavailable.
--
hi peter,
thanx for the reply.
i believe i understand your reply. i've never driven the run loop
forward by hand before, but i think i could figure that out. but
before i embark down that path, some quick questions that perhaps you
could help me with:
1) if the executing script (from the
On 1. Jun 2009, at 18:29, Ramakrishna Vavilala wrote:
I have layer hosting view which hosts a single layer with several
child
layers. Some child layers can be QTMovieLayers to display quick time
movies.
Things work fine.
Now my main issue is that I want to add video controls (Play, Pause,
I asked this a while back on the Spotlight mailing list and never
received a reply. Maybe someone here knows.
Begin forwarded message:
From: Nick Zitzmann n...@chronosnet.com
Date: May 20, 2009 6:38:36 PM MDT
To: spotlight-...@lists.apple.com
Subject: Making an undefined Spotlight
I just read in the NSMapTable Class Reference that I can use the class
to map to and from pointers to C structs:
You can configure an NSMapTable instance to operate on arbitrary
pointers and not just objects, although typically you are encouraged
to use the C function API for void *
Can somebody point me to the documentation for the C function API
referred to above? I was hoping to find a CFMapTable but I suppose
that would be too obvious :)
Type NSMapTable into Xcode and command-double click on it to open
NSMapTable.h. The functions are all in the header.
They're
:) thanks but . it doesnt work for me.
I read all that about NSParser just calling you back. I implemented
all the delegates BUT
I dont seem to be getting an appropriate callback for the Entities in
the DTD, although I did set 'shouldResolveExternalEntities = YES'
I get that messages
On Jun 1, 2009, at 4:59 AM, Graham Cox wrote:
On 01/06/2009, at 9:52 PM, Bright wrote:
When should use the [super dealloc];? Could anyone list all of
case.
Whenever you have overridden -dealloc. Simple as that.
Pretty much. If you override +alloc then you may or may not want to
call
On Jun 1, 2009, at 2:59 AM, Vijay Kanse wrote:
Sorry for My Question,
Actually i was dragging NSMenu from Library and I was trying to Add
it as
Sub Menu.
Ah, the problem here is that NSMenu instances contain an array of
NSMenuItem instances. NSMenuItem instances can each contain a
FYI: I was looking through some Darwin mailing lists archives, and I
ran across this posting about launchd at WWDC that may be of interest
to this thread:
Hello all,
If you're attending WWDC and are interested in the BSD-level
technologies in Mac OS X, I'm giving a talk on launchd this
Thanks Michael,
I do have a few notifications registered throughout the app, but
nothing that is connected with any of the CALayers or views. This
seems to happen no matter which view or nib I use. I'm trying to see
if I can isolate the notification that is causing the crash.
On Jun
On 5/28/09 3:49 PM, Martin Wierschin said:
This is a nice trick, I wasn't aware of that function, thanks.
Perhaps a minor improvement (one call instead of two):
- (BOOL) isTrashedFileAtPath:(NSString*)path
{
Boolean inTrash = false;
const UInt8* utfPath = (UInt8*)[path UTF8String];
On Mon, 2009/06/01, Keary Suska cocoa-...@esoteritech.com wrote:
From: Keary Suska cocoa-...@esoteritech.com
Subject: Re: NSXMLParser - howto resolve entities defined in DTD
To: Cocoa-Dev (Apple) Cocoa-dev@lists.apple.com
Date: Monday, 2009 June 1, 10:16
On 2009 May 31, at 4:31 PM, Dominik
Thanks, Jeff, others are also saying that implementing this method
doesn't always fix the problem. Which makes sense: presumably Apple's
implementation amounts to return request;, so it is hard to see how
that method could be at the root of the problem.
I hope everybody is filing bug reports
Thanks Graham,
While I was waiting for my post to get moderated I did implement the
data model method of calculating the view bounds and thats working
great.
rjo
On May 29, 2009, at 11:55 PM, Graham Cox wrote:
On 29/05/2009, at 10:14 AM, Robert Olivier wrote:
I'm a new Cocoa
Hopefully this has a simple answer but it seems now that when I call
copyItemAtPath:toPath:error: to copy a folder to another location, I
get this in the console:
6/1/09 3:48:28 PM
/Users/jimt/Source/MyApp/trunk/build/Debug/MyApp.app/Contents/MacOS/MyApp[29625]
reading from
Hi all,
Now that 10.5.7 (allegedly) fixes the incompatibilities between the SQL
store and GC apps, I have been trying to switch from XML to SQL. Most
problems I've fixed, but I'm getting an exception:
statement is still active
See backtrace below. I've search the archives of course, and see
Hey everyone,
I'm writing a simple test project to try and isolate some unexpected
behavior, and found more unexpected behavior (not what I was looking
for).
I'm trying to use a simple NSAssert macro, like so:
NSAssert(NO, [NSString stringWithFormat:@Caught unexpected exception:
%@,
On Mon, Jun 1, 2009 at 4:33 PM, Dave DeLong davedel...@me.com wrote:
I'm writing a simple test project to try and isolate some unexpected
behavior, and found more unexpected behavior (not what I was looking for).
I'm trying to use a simple NSAssert macro, like so:
NSAssert(NO, [NSString
Oh good call; I didn't think of that. That WILL compile correctly.
Dave
On Jun 1, 2009, at 3:42 PM, Stephen J. Butler wrote:
Ugg. Sounds like a bug. What happens when you do this:
NSAssert(NO, ([NSString stringWithFormat:@Caught unexpected
exception: %@, e]));
Dominik Pich wrote:
I get that messages asking me to PROVIDE a substitution for an entity
But I never get the messages FOR the declaration of the entities,
so I dont know WHAT to return as data.
When something like this happens, i.e. I've set my delegate, but
it's not getting called, it
On Jun 1, 2009, at 4:33 PM, Dave DeLong wrote:
I'm writing a simple test project to try and isolate some unexpected
behavior, and found more unexpected behavior (not what I was looking
for).
I'm trying to use a simple NSAssert macro, like so:
NSAssert(NO, [NSString
On Jun 1, 2009, at 3:33 PM, Dave DeLong wrote:
Is this expected/documented behavior?
Yes, because the preprocessor relies on the commas and isn't aware of
the underlying language. Use NSAssert1/NSAssert2, etc. or wrap the
call in parentheses as already suggested.
Nick Zitzmann
On Jun 1, 2009, at 4:31 PM, Sean McBride wrote:
This is a nice trick, I wasn't aware of that function, thanks.
Perhaps a minor improvement (one call instead of two):
- (BOOL) isTrashedFileAtPath:(NSString*)path
{
Boolean inTrash = false;
const UInt8* utfPath = (UInt8*)[path
Now that 10.5.7 (allegedly) fixes the incompatibilities between the
SQL
store and GC apps, I have been trying to switch from XML to SQL. Most
problems I've fixed, but I'm getting an exception:
Yes, 10.5.7 fixes all the known issues with (GC, NSDocument,
NSSQLiteStore). The
On Jun 1, 2009, at 1:43 PM, Dominik Pich wrote:
:) thanks but . it doesnt work for me.
I read all that about NSParser just calling you back. I implemented
all the delegates BUT
I dont seem to be getting an appropriate callback for the Entities
in the DTD, although I did set
const UInt8* utfPath = (UInt8*)[path UTF8String];
OSStatus err = DetermineIfPathIsEnclosedByFolder
(kOnAppropriateDisk, kTrashFolderType, utfPath, false, inTrash);
For the archives: 2 more problems:
a) use fileSystemRepresentation not UTF8String.
I initially considered that, but the
On 6/1/09 3:01 PM, Ben Trumbull said:
Now that 10.5.7 (allegedly) fixes the incompatibilities between the
SQL
store and GC apps, I have been trying to switch from XML to SQL. Most
problems I've fixed, but I'm getting an exception:
Yes, 10.5.7 fixes all the known issues with (GC, NSDocument,
On 6/1/09 3:03 PM, Martin Wierschin said:
const UInt8* utfPath = (UInt8*)[path UTF8String];
OSStatus err = DetermineIfPathIsEnclosedByFolder
(kOnAppropriateDisk, kTrashFolderType, utfPath, false, inTrash);
For the archives: 2 more problems:
a) use fileSystemRepresentation not UTF8String.
On Jun 1, 2009, at 4:03 PM, Keary Suska wrote:
All external entities must be declared in the core XML. If they
aren't, your XML is not well-formed.
Correction, this would not be the case for declarations in a DTD,
which are part of the external subset, so the first delegate message
Having subclassed NSToolbar, I am now trying to get a notification of
changes done by the user using the customization palette.
This works fine for the removal of items (toolbarDidRemoveItem:), but
I can't see a way to get notified of added/moved items after the fact.
The only notification I
This piece of code was split off from a project I am working on. It
consistently reproduces a garbage collection error on my Mac OS 10.5.7 and
sometimes crashes. I have been looking at it for too long so my question is:
does anybody else see why this would give errors when garbage collection is
On Jun 1, 2009, at 4:53 PM, David Reitter wrote:
Having subclassed NSToolbar, I am now trying to get a notification
of changes done by the user using the customization palette.
This works fine for the removal of items (toolbarDidRemoveItem:),
but I can't see a way to get notified of
My app needs a reference to files that may or may not exist (yet).
When the file exists, I prefer to use the Alias because it tracks if
the user moves it, etc. But if the file does not exist yet, my +
[NSData aliasRecordFromPath:] method (shown below) returns nil.
It is implied but not
Hi Everyone,
I am trying to post a notification (a
CFNotificationCenterPostNotification) on a thread from a
CFNotificationCenterGetLocalCenter, to a NSNotificationCenter
defaultCenter. All on the same thread, spun off from my main thread.
The observer that I am adding, never gets called.
Jerry Krinock wrote:
My app needs a reference to files that may or may not exist (yet).
When the file exists, I prefer to use the Alias because it tracks if the
user moves it, etc. But if the file does not exist yet, my +[NSData
aliasRecordFromPath:] method (shown below) returns nil.
It is
How do you get the thin-style bars in landscape like Mail has? Mine
doesn't do that automatically. I haven't been able to find an API or
developer doc that mentions it.
Mike Manzano
Sent while mobile
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does it matter which order objects are released at the end of a
method? example:
-=-=-=-=-
- (void)applicationWillTerminate:(NSNotification *)notification
{
FourLines *fourLines = [[FourLines alloc] init];
fourLines.field1 = field1.text;
fourLines.field2 =
Great, so I understand from what you're saying that I can launch a
GUI app
using launchd?
Out of curiosity, I just tried this. I created a basic Cocoa app (I
made no changes to it, I just built the default skeleton application
that Xcode creates for you). The project is in the
I don't think so. Releasing objects merely decreases their retain
count. It's up to the Obj-C runtime system to figure out in what order
to actually free the memory allocated for those objects. In other
words, we are not the ones deciding how and when to deallocate memory
allocated for
does it matter which order objects are released at the end of a
method? example:
-=-=-=-=-
- (void)applicationWillTerminate:(NSNotification *)notification
{
FourLines *fourLines = [[FourLines alloc] init];
fourLines.field1 = field1.text;
fourLines.field2 =
On Jun 1, 2009, at 3:53 PM, David Reitter wrote:
Having subclassed NSToolbar, I am now trying to get a notification
of changes done by the user using the customization palette.
This works fine for the removal of items (toolbarDidRemoveItem:),
but I can't see a way to get notified of
On 1 Jun 2009, at 1:54 PM, Jim Turner wrote:
Hopefully this has a simple answer but it seems now that when I call
copyItemAtPath:toPath:error: to copy a folder to another location, I
get this in the console:
6/1/09 3:48:28 PM
On Mon, Jun 1, 2009 at 6:05 PM, WT jrca...@gmail.com wrote:
I don't think so. Releasing objects merely decreases their retain count.
It's up to the Obj-C runtime system to figure out in what order to actually
free the memory allocated for those objects. In other words, we are not the
ones
I just remembered that I never made good on my promise to post why I
needed this.
In a nutshell, I wrote some code that lets me add basic NSCoding
compliance to any class at runtime. The only requirement is that the
target class has to be KVC-compliant (since I pull values in and out
On 02/06/2009, at 8:53 AM, David Reitter wrote:
Having subclassed NSToolbar, I am now trying to get a notification
of changes done by the user using the customization palette.
This works fine for the removal of items (toolbarDidRemoveItem:),
but I can't see a way to get notified of
Alex Sheh wrote:
My requirements are the following:
- On a machine running 10.5 or later, I need to run 64-bit code.
and:
... I need to run a 64-bit binary (the one that was built against
10.5 SDK) when the user is running Leopard 10.5, ...
This doesn't make sense to me. If the user is
I looked at the msgSends dump of everything after setWantsLayer, and
at the end it looks like a NSAutoreleasePool is being created right
before a CAContext is initialized. It then throws an exception right
after NSCFString NSCFString copyWithZone:.
+ NSAutoreleasePool NSObject alloc
+
Sorry, wrong list. Please ignore prior post.
-- GG
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On Jun 1, 2009, at 7:40 PM, Keary Suska wrote:
You can know when the customization palette is invoked, so all you
need to check for is when it is closed and then check for changes.
You could take a snapshot at -runCustomizationPalette:, then set a
timer that checks
You are not creating URL correctly - basically
CFURLRef.alloc().initWithString_() will create it by calling
CFURLCreateWithString() while it should be created by
CFURLCreateWithFileSystemPath(). I do not know the name of
corresponding python method.
Misha
On Dec 3, 2008, at 4:36 PM,
I keep moving an UIImageView with CGAffineTransformTranslate through a
timer. That doesn't affect the view's frame and bounds.
Is there a variable somewhere that I can read to keep track of the transform
or must I create my own?
Thanks, Pierre
___
On 02/06/2009, at 1:06 PM, David Reitter wrote:
updating the toolbar regularly from the internal (Lisp-level)
representation
OK, but wouldn't -validateUserInterfaceItem: be appropriate for this?
Since you're only interested in the items actually in the bar, then
you can validate them
I have an outline view where the first column are file names. There is
absolutely no processing of the name going on in my code. It uses a
data source delegate. The method
outlineView:objectValueForTableColumn:byItem: is returning an NSString
* with the proper value.
Everything has been working
On 02/06/2009, at 1:24 PM, David wrote:
If I take out some xx's it works. Many other random changes will make
it work, such as changing the Xs to 0s. Some cases will cause it to
truncate at a later period, but it always truncates at a period.
This is extremely weird. Any suggestions
Great! Thanks! That was it.
On Jun 1, 2009, at 11:31 PM, Graham Cox wrote:
On 02/06/2009, at 1:24 PM, David wrote:
If I take out some xx's it works. Many other random changes will make
it work, such as changing the Xs to 0s. Some cases will cause it to
truncate at a later period, but it
Dunno if this would work, but... how about doing
setAutosavesConfiguration:YES and observing user defaults?
--Andy
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Contact
Hello all,
I'm new to this Mac development thing, but I'm old when it comes to
developing in general.
I'm trying to create a dylib with a function that will ultimately
notify me of screen refresh rectangles. It is all working when I run
it as an application (with a main method) but
Hi,
I have successfully implemented the NSDocument architecture in my application
and have implemented saving and loading documents by overriding the
dataOfType:error: and readFromData:ofType:error: methods. I now want to be
able to export my document into a folder selected by the user. The
On Jun 1, 2009, at 1:38 PM, Mikael Grev wrote:
CGRegisterScreenRefreshCallback (MyScreenRefreshCallback, NULL);
From the docs:
The callback function you register is invoked only if your
application has an active event loop. The callback is invoked in the
same thread of execution that is
On Jun 1, 2009, at 14:53, Gwynne Raskind wrote:
On Jun 1, 2009, at 4:31 PM, Sean McBride wrote:
This is a nice trick, I wasn't aware of that function, thanks.
Perhaps a minor improvement (one call instead of two):
- (BOOL) isTrashedFileAtPath:(NSString*)path
{
Boolean inTrash = false;
On Mon, Jun 1, 2009 at 6:40 PM, Sean McBride s...@rogue-research.com wrote:
But it's not a huge issue: fileSystemRepresentation and UTF8String give
the same thing 99% of the time.
And more importantly, the 1% of the time where they give you different
results, they still give you *equivalent*
On 02/06/2009, at 11:40 AM, Matthew Jeorrett wrote:
I have successfully implemented the NSDocument architecture in my
application and have implemented saving and loading documents by
overriding the dataOfType:error: and readFromData:ofType:error:
methods. I now want to be able to export
On Tue, Jun 2, 2009 at 12:39 AM, Graham Cox graham@bigpond.com wrote:
On 02/06/2009, at 11:40 AM, Matthew Jeorrett wrote:
I have successfully implemented the NSDocument architecture in my
application and have implemented saving and loading documents by overriding
the dataOfType:error:
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