I’ve been doing some experiments to invite another player in Game Center on iOS
devices, and the invite is failing immediately.
I am using the Apple GKMatchmakerViewController to invite the players. If I
choose “Play Now” on both devices, they eventually find each other. If I do
“Invite Friend”
> On Aug 26, 2014, at 4:00 PM, Todd Heberlein wrote:
>
> Do both devices have to be on the same Wi-Fi network? My workstation, where
> I am running the simulator, is *not* on Wi-Fi. My Cell phone (the second
> device) is either on Wi-Fi or LTE.
If I have two physical devices
> in the past few years when it's happened it's been an early symptom of
> filesystem corruption. Sometimes there have been a bunch of leftover
> temporary lock(?) files in the Preferences directory.
>
> If you're getting reports of this from users of your app, it might be worth
> asking them t
> I learned yesterday that you can't change the screenshots in the App Store
> after your app is approved. Has this always been the case? It seems ludicrous
> that I have to submit a new binary to change the screenshots (but that's
> exactly what iTunesConnect support told me).
I don’t know why
It seems that the way I previously used an NSSavePanel has been
deprecated. :(
The new approach seems to use an approach (a function definition
embedded in the message) that I am not familiar with (I hear ghosts of
lambda notation whispering into my ear). I assume this is an Objective
C 2
Thanks for the information.
OK, now a scoping rule question, in the sample code below, does "self"
refer to my object (i.e., the "self" when the block is declared) or
the NSSavePanel (i.e., the "self" when the code is executed)?
Todd
[savePanel beginSheetModalForWindow:window completionHan
On Sep 14, 2009, at 12:57 PM, Mark Thomas wrote:
I was wondering if anybody could tell me if it's correct to use
authorizationExecuteWithPrivileges and wait() calls together, so the
parent process wait's until that new child process finishes.
Googling seems to imply this from the examples
I am trying to understand the behavior of an NSNumber bound to an
NSTextField. It seems that an NSNumber isn't always and NSNumber.
--
SET UP
I have a class with an NSNumber* bound to an NSTextField via an Object
Controller
NSNumber* <---> NSObjectController <-
So in short, my need is pretty simple: Bind an array to an
NSArrayController. That being said, it seems that no combination of
exposeBindings:, bind:toObject:withKeypath:options:,
observeValueForKey:ofObject:change:context:, etc. is working as I
expect it to. Admittedly, I have done most
Some may find the following Apple Insider article on the the topic
useful:
Inside Snow Leopard's UTI: Apple fixes the Creator Code
http://www.appleinsider.com/articles/09/09/22/inside_snow_leopards_uti_apple_fixes_the_creator_code.html
On Sep 23, 2009, at 9:11 AM, Jens Alfke wrote:
On Sep 23
As a result, most of their conclusions are incorrect as well. If
you can't set the UTI differently on two files with the same type
code and extension, it can't serve as a creator code.
I've been wondering about this. Daring Fireball carried some links
with some strong criticisms on this, a
I have an NSTableView and I have Drag & Drop working between table
views for my application where I encode the object to an NSData and
write it to the NSPasteboard. But now I want to create a string
representation of the object, add it to the pasteboard as well, and
then when the object is
Solved it!
... But now I want to create a string representation of the object,
add it to the pasteboard as well, and then when the object is
dragged to something like an email, the string representation of the
object is written in.
The problem was that I was trying to do a cross-applicati
By the way, a quick google search of, "nspredicateeditor example"
yields a very helpful first result ...
Don't forget, Google yields different results for different people
based on a variety of factors.
Todd
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I am wondering if there is a simple way to find out when my
application is running for the VERY FIRST TIME on an iPhone?
So that I can set an integer variable once only at this moment...
What's the best way to do this?
One approach is to test if a file exists on the file system, and if it
d
I am wondering if there is a simple way to find out when my
application is running for the VERY FIRST TIME on an iPhone?
So that I can set an integer variable once only at this moment...
What's the best way to do this?
Also, NSUserDefaults supports this basic capability. I'm just
wondering
On Oct 3, 2009, at 12:30 PM, David Blanton wrote:
Should my cocoa app write an entry to com.apple.loginitems.plist so
it launches at login or is there a better way?
Look at the documentation for launchd.
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1. How can I debug my HelperTool? Obviously any breakpoints set in
XCode won't work because the HelperTool is launched outside by the
launchd.
2. My idea is to use asl to debug "barefoot". But for that I have to
install aeach time when I have compiled a modified version of the
HelperTool to
Anyone want to point out what I'm doing wrong? Any help appreciated.
I think I had to do a Project->Add To Project... and then select the
icon file in order to get the icon to be used. Dragging the icons into
my project didn't do the trick.
Todd
__
In Apple's BetterAuthorizationSample application pressing the
"LowNumberedPorts" button brings up a window to authorize yourself. It
includes the following text to explain why you are authorizing yourself:
"You must be authorized to open low-numbered TCP ports. Type your
password to allow B
On Oct 7, 2009, at 12:05 PM, Olivier Palliere wrote:
If you already installed your tool once and didn't change the kind
of rights that it is using, then it is most likely in the /etc/
authorization file.
If you remove your rights from there, re-installing your helper will
recreate the rig
I've had trouble with this too, even though my /etc/authorization
has *my* strings in it. (I just checked again). I gave up and
moved it to my "fix someday" list. Haven't checked in Snow Leopard
yet. Here's my story:
I found the following bug: In my Snow Leopard created project the
p
On Oct 8, 2009, at 4:01 PM, Todd Heberlein wrote:
Of course, I can't expect my users to go into /etc/authorization to
change the entry themselves, and I'm not going to much around with
it from my code, so I guess I'll wait for Apple to fix this. I'm not
even sure wh
This seems like a simple task, but it has become a series of steps. Am
I missing a simple method that will do this?
I have a Text View and want to get the selected text in an NSString
form. I can get an NSString for the entire NSTextView (-string), but
to get the string for just the selecte
[[myTextView string] substringWithRange:[myTextView selectedRange];
(Warning, composed in Mail. Potential thorny issues with text
attachment characters, surrogate pairs, composed characters, marked
text… "the selected text" isn't as simple of a concept as it may
seem.)
Yeah, one of the concern
> What APIs/library/Technology we should use that notifies us about network
> usages and also provides us with the data being transmitted.
>
> I have look in libpcap that pretty much gives the packets but i dont know
> how much it helps in notification kind of things.
I don't think there are any
On May 10, 2010, at 1:24 PM, David Duncan wrote:
>> By the way, I concur with Thomas Davie: treating a pointer as a Boolean
>> makes me nervous.
>
> I don't see any reason not to make the comparison explicit if you desire. I
> do it all the time :).
This has been part of C since the beginning
> Afaik, no. Why would you do that?
I don't know about the original sender's reason, but DNS servers are often the
initial target of attacks. Then when you go to, say www.nike.com, the DNS
server sends you the IP address of a malicious site. That site infects your
browser, then redirects you to
On Sep 10, 2011, at 1:28 PM, R wrote:
> including the Validating Mac App Store
> Receipts process.
I've removed validating Mac App Store receipts from my code. In general, for at
least your first release, I would not worry about DRM. If you think your first
release is going to be so popular th
I was looking at the rich information provided by diskutil:
$ diskutil info -plist /Volumes/blah
NSWorkspace has some of this information, but I was wondering if there is a
Cocoa object that provides more of the information provided by diskutil.
If not, does anyone know how is diskutil
I haven't read it yet, so I can't give you a review. I'm sure many of us have
at least one of the previous editions, so I thought I'd give everyone a heads
up.
Cocoa Programming for Mac OS X (4th Edition)
By Aaron Hillegass, Adam Preble
http://www.amazon.com/gp/product/0321774086/
Todd
___
I'm getting an exception thrown that I am trying to figure out.
I'm working through "Cocoa Programming for Mac OS X" fourth edition, and added
the first undo code in chapter 151 -- the Undo code for adding and removing
Person objects. Testing seems to work fine, except when I do repeated Undo an
haven't added any code to save the
data yet.
Todd
On Dec 29, 2011, at 12:52 PM, Todd Heberlein wrote:
> I'm getting an exception thrown that I am trying to figure out.
> ...
> The frames stack is:
> 0 __pthread_kill
> 9 _objc_exception_destructor
> 10 -
On Dec 29, 2011, at 12:57 PM, Todd Heberlein wrote:
> Ah... I figured out an even easier way to repeat the issue.
Even simpler! (sorry for all the spam)
(1) Add one Person object
(2) wait 30-60 seconds.
crash.
No clicking on the Edit menu. No clicking away to another application.
Sligh
On Dec 29, 2011, at 1:27 PM, Jens Alfke wrote:
> Well, show us some code. (I don't have that book you're working from.)
> What is the line that raises the exception? What are the values of variables
> at that point?
It is the default code from the Document-based application. It is the @throw
On Dec 29, 2011, at 1:50 PM, Conrad Shultz wrote:
> This sounds like Lion auto saving. Are you on Lion? If so, do you return YES
> from -autosavesInPlace in your NSDocument subclass?
Yes. I just created a new document-based app to test it, and sure enough, the
template code that is created has
On Mar 1, 2012, at 3:27 PM, Gene Crucean wrote:
> Man I don't know why there is soo much hate towards v4...
I did find the switch from 3.x to 4.x jarring, but I have adjusted.
I am still using Version 4.1, and for me it has been fairly stable. Are the
instability issues everyone is complaining
On Jan 31, 2011, at 3:23 PM, Aki Inoue wrote:
> The precise definition of the point specified by the argument is the top left
> corner of the text container containing the glyph range in the focused view
> coordinate system.
This flipped view for fonts confuses me a bit because the fonts are or
Thanks everyone! I've learned a lot. I also found working in a flipped view
easier for just getting a grasp of things like the NSRect returned by
-usedRectForTextContainer:.
Just for fun, I played with an NSView that is flipped, *except* just before the
call to -drawGlyphsForGlyphRange:atPoint
During the recent text orientation/position thread a couple of things caught my
attention: (1) the text system seemed designed to have a flipped view (origin
in the upper left), and (2) the iOS version of an NSView, the UIView, also has
an origin in the upper left.
If starting some new graphica
Bad subject line. My bad.
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Looking at the NSString class there is the method
initWithBytes:length:encoding:
I have a unicode string (in C++ object) that I can extract in a number of
different byte stream formats (UTF-8, UTF-16 (w or w/o BOM)) that I need to
encode into an NSString. Does the NSUnicodeStringEncodin
On Feb 11, 2011, at 11:10 AM, Kyle Sluder wrote:
> NSUnicodeStringEncoding is an alias for NSUTF16StringEncoding. You're
> best off getting UTF16 from your C++ string and explicitly using the
> NSUTF16StringEncoding constant when creating your NSString. Since
> UTF16 is the canonical representatio
On Feb 23, 2011, at 4:37 AM, Bruce Cresanta wrote:
> They may be no big deal, but the more I read and try the more confused I get.
I spent most of yesterday on this myself, and I too found it very frustrating.
Part of my confusion comes from the fact that "Apple Help Programming Guide" is
a bl
On Feb 23, 2011, at 9:46 AM, Martin Hewitson wrote:
> I'm not sure if this is the new or the old way, but this worked perfectly for
> me:
It is the old way, but it is still very useful (and apparently still works). I
especially liked some of the extra features he adds.
Todd
_
I concur: "Cocoa Programming for Mac OS X" (3rd edition) and "Programming in
Objective-C 2.0" (2nd edition) are the two books I go to the most and recommend
for people getting started.
Once you've have some experience, then the Apple online documentation is pretty
good. In particular, when you
I am trying to use the Quartz Debug app to scale up my app (for a screenshot
for MAS). My content looks great in the scaled up windows, but the window
frames themselves look terrible. For example the title bar and title in it are
all screwed up.
Is there a setting I can use to make the title ba
I'm working my way through Apple's "Validating App Store Receipts", and I can
extract all the data, compute the digest and compare it against the hash. But
now I am stuck converting the OCTET_STRING_t for the bundle_id in the Receipt
to an NSString so I can compare it against my applications Bun
> In particular, the beginning of the OCTET_STRING_t's buffer begins with two
> bytes (decimal values 12 and 21). Am I supposed to skip these? For example,
> the following code where I skip these first two bytes seems to work, but it
> seems like a big hack:
OK, it seems that the second byte (2
Ka ching! Yes, this answer is what I am looking for. Thanks!!!
Todd
On Mar 29, 2011, at 10:50 AM, Stephen J. Butler wrote:
> On Tue, Mar 29, 2011 at 12:24 PM, Todd Heberlein
> wrote:
>> In particular, the beginning of the OCTET_STRING_t's buffer begins with two
>> b
On Mar 29, 2011, at 12:54 PM, Wim Lewis wrote:
> If the security data is in DER, then lber's restricted subset of BER might
> still suffice. (I haven't looked.)
>
> But yes, linking openssl and using d2i_ASN1_type_bytes() and either
> ASN1_STRING_to_UTF8() or mapping the ASN.1 string types to
On Mar 29, 2011, at 1:24 PM, Quincey Morris wrote:
> FWIW, my understanding of the reason it doesn't work that way is this:
> ...
That is pretty much what the Apple documentation says. I felt that they were
saying, "This is left as an exercise for the reader." :)
The hacker community has had
On Apr 10, 2011, at 4:32 PM, davel...@mac.com wrote:
> And you also have add code to verify a valid receipt. There's a few samples
> of how to do this on github (you should modify them to make the app more
> difficult to crack unless you're giving the app away for free). Apple has
> more about
I'm trying to get a row of buttons to look and behave like the buttons across
the Preview app's preference window. It seems like a nicer way to do a tabbed
view.
Is that just an NSToolbar with custom graphics/icons, or is that NSMatrix with
icon radio buttons? Or is it something else entirely?
I want to have an NSTableView controlled by an NSArrayController using an
NSArray data source. In one of the columns I want to display one of several
images. The choice of image will be based on an integer value in one of the
fields of the array.
What is the best or most recommended way to do t
On Apr 19, 2011, at 3:09 PM, Dave DeLong wrote:
> Or just add a method on your data object that vends the appropriate image
> based on its own properties, and then just bind to that method name as the
> Model Key Path. (this is much simpler than the value transformer)
For an experiment I have
On Apr 19, 2011, at 10:08 PM, Quincey Morris wrote:
>> Any idea why a column with a transformer has duller images?
>
> If it's significantly duller, that probably means it's being shown as
> disabled.
I figured it out. If the transformer is *not* reversible
+ (BOOL)allowsReverseTransf
I am able to draw an image in an NSTableView's cell using the NSImageCell, but
I want a larger cell. What is the best way to do this?
In my first attempt, I subclassed NSImageCell and assign it to the column with
-setDataCell in -awakeFromNib. I have verified that my custom cell is being
used,
> I am able to draw an image in an NSTableView's cell using the NSImageCell,
> but I want a larger cell. What is the best way to do this?
OK, I found a solution. I have a delegate for the table that implements
- (CGFloat)tableView:(NSTableView *)tableView heightOfRow:(NSInteger)row
The
> Just set the desired row height in IB.
>
> Programatically, it's -setRowHeight:
Oops! How embarrassing. Thanks guys.
Todd
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The HIG talks about the removal of window-frame surface on the sides of windows
starting in Mac OS X 10.5. But when using IB (I'm still back in 3.2.6) some
objects show an automatic guide when positioning near the edge of a window
(e.g., NSView (custom view), NSSplitView, NSPopupButton, NSTextvi
When using the "Size & Position" information for an object to position it in a
view, what is the difference between the "Layout" and "Frame" values in the
pop-up button? When should I use "Layout", and when should I use "Frame"?
When trying to layout objects, especially when trying to align the
Regarding format specifiers, there is the "String Format Specifiers" section of
the "String Programming Guide" in Apple's Developer Documentation. Here is a
link to the web version:
http://developer.apple.com/library/mac/#documentation/Cocoa/Conceptual/Strings/Articles/formatSpecifiers.html%23//
For Cocoa apps not distributed through the Mac App Store, is there a
common/recommended design pattern for license keys?
A little googling around I found common locations were:
/Library/Application Support/YourApp/
/Library/Preferences/YourAppBundleID.plist
I'm leaning towards a
Thanks everyone! This has definitely helped.
Todd
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On Jul 24, 2011, at 10:57 AM, Julie Seif wrote:
> I really do not like Xcode 4. I feel like I'm a beginner all over again in
> Xcode 4... I was just so comfortable to the Xcode 3 and previous releases of
> Xcode interface.
I've been a light user of the development environment since NeXTStep 2.1,
On Dec 9, 2009, at 4:23 AM, Alastair Houghton wrote:
> Specifically, a potential attacker will deliberately not follow this
> convention. The Security Server used to get the information for the program
> name in this manner, which created quite an interesting vulnerability since
> you could g
I have a document-based app. For each document there can be a couple of
satellite windows brought up for specific views of some of the data. Each of
these satellite windows is controlled by an NSWindowController subclass loaded
by MyDocument and added via addWindowController:. A menu item's tar
> That's correct, and that's how it should work. It works here in a test app.
> Are you doing anything "unusual" in your NSWindowController? What methods are
> you overriding?
My bad. After getting your email I kept dug around a bit more, and I discovered
I had not connected the NSWindowControl
On Dec 30, 2009, at 9:17 AM, Mr. Gecko wrote:
> Is it possible for me to encrypt the strings in my binary so hackers can't
> easily figure out what my application has in it? Reason I'm asking is I have
> some private keys that encodes data that I/parents don't want kids or
> teenagers to find.
> I'm fairly new to programming for the iPhone (still getting up to speed!),
...
> but I can't figure out from the docs, nor from online code examples, how to
> do this.
I liked the book "Beginning iPhone 3 Development: Exploring the iPhone SDK". It
is a good way to get up to speed on iPhone de
A friend of mine loves her new 27" iMac but has complained at how small
everything is. Searching around on the net I found that it has about a 109 dpi
pixel density. I also saw today that the new Nexus phone has a pixel size of
800x480 (as opposed to my iPhone's 480x320 pixel size), and the two
> I want to allow my cocoa app to be only launched by root/admin users.
> How can i achieve this?
As I think has already been mentioned, the UNIX approach is to set the
application's owner as root and then make it only executable by the owner.
However, Apple largely discourages programmers from
My problem is that my ISPs use long-haul WiFi links that seem to go down fairly
regularly (which is why I keep redundant ISPs). This make multi-hour downloads
occasionally frustrating.
Todd
On Feb 10, 2010, at 9:00 AM, Philip Ershler wrote:
>
> On Feb 10, 2010, at 9:45 AM, Richard Somers wrot
Sorry about the confusion, yes I meant it will run normally but
unattended.
I need to make sure it recovers from any errors. in the worst case
if it
crashes, I need it to launch again automatically, even if there's 1
minute
or whatever delay, it's absolutely fine.
So it is a GUI app that w
You can use launchd to keep your app alive. That way you, don't
have to worry about adding code to your application to do it, you
just have to ensure the launchd property list is in the right place.
So if in your launchd module you have the key-value pair:
KeepAlive
will l
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.
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 ye
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 directory:
I have written an application that I would like to launch whenever a
certain app is launched. I have used LaunchAgents in the past to
detect events such as USB insertion and volume mounting to perform
certain actions. I was wondering if there was a launchd.plist key
that allowed for launc
Does anyone know if/when Apple will post the "State of the Union"
presentations from WWDC 09?
Todd
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so grueling and satisfying at the same time, we may never know. With
all the new functionality (APIs) to be provided in 10.6 and for the
iPhone 3.0, I wonder if it would be worth having some frank
discussion on if now is a good time to split off from this list some
more focused discussion l
This is for limited use, and isn't a product for the masses.
There has already been some pretty good stuff posted, but just keep in
mind that once you've released your code, if someone is really
interested in modifying your code, they probably will. I doubt there
will ever be a 100% guaran
From time to time someone posts a question about using non-public
Apple APIs -- you know, the ones that let you do something really cool
or fast but causes your app to break on a future OS release. :)
Anyways, I saw this purported private API for OS X, and I thought I'd
share it. Pretty fu
Is there anyway one can install an OSX system on a virtual machine
for testing purposes?
Check the EULA for Mac OS X Server. I think you can run that under a
VM, and I think VMWare has support for it in either the current or
future version.
Todd
__
but there will be persons like myself with draconian isp who block
gobs of ports and make it hard to for chat apps to work.
There are a lot of very good reasons for a Draconian policy like
that. :)
how can I, in a reasonably economic way, find an open port to talk on?
Are you trying to s
While working through "Beginning iPhone 3 Development" I've seen the
following a lot, and it seems like a general Cocoa issue.
In -viewDidUnload methods the code has the form:
self.foo = nil;
Whereas in -dealloc methods the code has the form:
[foo release];
Both methods seem t
Is there some notification that's posted by the OS when a root
daemon process is launched? Here's what I've tried:
Off the Cocoa topic, but I track processes using the BSM audit trail.
Todd
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P
The standard practice is to start any nib-dependent startup stuff
on -awakeFromNib ... forcing it to load seems dirty. :-)
or
-viewDidLoad
on the iPhone (?).
Todd
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I don't understand how the app allowed to use that file descriptor
to read the file's contents.
Its a general UNIX thing. If you have a book on UNIX interprocess
communications, you can probably find some details in it. And as
others have pointed out, permissions are checked at the time of
I've been playing with KVC and KVO with my own setters and getters
(along with Controllers) to create virtual ivars. That is, there never
is any storage created for the variable and its value is calculated on
the fly when the getter is called. This seems to have some cool
potential, but it
If you can't set a value, don't provide a setter.
I see from another post I was conflating "ivars" with "properties".
With regards to the setters, I have some C++ libraries, and I was
thinking about having "property" wrappers in an Objective C object
doing setting and getting into values i
I see from another post I was conflating "ivars" with "properties".
With regards to the setters, I have some C++ libraries, and I was
thinking about having "property" wrappers in an Objective C object
doing setting and getting into values in the C++ object.
So here is a slightly more detail
> I had a shrinkwraped OPENSTEP Enterprise 4.2 CD from March 1997 in my file
> cabinet, so I just installed it on a crap 1.83GHz Core 2 (not-duo) running
> Windows XP SP3.
I wonder how much value it lost when you removed the shrink wrap?
I've kept only two old computers with me over the years -
In a Cocoa app is there a preference for using the Cocoa or the Quartz drawing
routines?
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When working with an NSScrollView, sometimes my document view is smaller than
my content/clip view. (the document view's size is dynamically generated
depending on the data that needs to be rendered; or the user may make the
window much larger than the document view.) In these cases I would lik
I'm doing a simple experiment using NSTextStorage, NSLayoutManager,
NSTextContainer to draw some text (I am basing this on the CircleView example
because I want some of that orientation power later).
I have found that when rendering the text using
drawGlyphsForGlyphRange:atPoint:, I don't get t
In the past you could include a full UNIX application inside a Mac application
bundle. For example, in the directory
MyApp.app/Contents/MacOS
could be the Cocoa executable "MyApp" and the UNIX executable "my_helper_app".
In addition to running this helper app from the Cocoa app, this U
On May 30, 2012, at 4:53 AM, Stephane Sudre wrote:
> It's allowed. IIRC, when the helper app is launched from the main
> application, it inherits the entitlements/restrictions of its parent.
I thought (and I'm barely getting up to speed on this) if the program was
launched as an NSTask, it woul
Probably a naive question, but can I use QTKit (or is there a better library?)
to capture images (or videos) inside a UNIX helper application?
I've never tried using Cocoa (and related) objects outside a regular Cocoa
application with a GUI, NSApplicationMain(), etc. Is this generally prohibite
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