I have a UI item (text field) that displays a tooltip when the user hovers over
it. However, the information to be displayed in the tooltip is dynamic and
relatively expensive to compute. At the moment the tooltip is bound to a string
property which I manually update twice a second. It seems tha
2 Jun 2017, at 16:01, Charles Srstka wrote:
>> On Jun 12, 2017, at 4:04 AM, Jonathan Taylor
>> wrote:
>>
>> Hi all,
>>
>> This feels like a very basic question, but one that I have not had any luck
>> searching for (maybe I am using the wrong terms
Hi all,
This feels like a very basic question, but one that I have not had any luck
searching for (maybe I am using the wrong terms?).
At the moment I have properties in a (singleton) class that are bound to UI
elements. At the moment they have the same automatic values every time the app
is l
>> My attempt like:
>> [NSURL URLWithString:[path
>> stringByAddingPercentEscapesUsingEncoding:NSASCIIStringEncoding]
>> relativeToURL:relativeTo];
>
> Ah, you want NSUTF8StringEncoding instead. Generally speaking, URL encoding
> always uses UTF-8 nowadays.
Thankyou for your reply Jens. That's
Can anyone help me with the seemingly simple task of creating a relative NSURL
for a filesystem object? The catch here (sorry!) is that I really do need
backward compatibility to 10.7, which rules out
fileURLWithFileSystemRepresentation:isDirectory:relativeToURL: (which I suspect
is the “right”
Hi everyone,
Thankyou all for your replies. Plenty of food for thought there - much
appreciated. Looks like timers and flow control is the way forward then, if I
want to tackle this. I just thought I'd see if there was anything built in to
the standard UI frameworks that might be able to help,
0sec elapsed
> time whenever the slider is updated, and if it reaches a small delay then the
> HQ image is rendered (and remains on-screen until the slider is later moved
> and the process repeats). No need to rely on GCD or threading.
>
> — Slipp
>
>> On Oct 29, 20
parency based on its size that might be helpful.
>
> So, I think I am saying this problem is not new and has been addressed in
> several different ways in the NSView class.
>
>
>> On Oct 29, 2016, at 2:37 AM, Jonathan Taylor
>> wrote:
>>
>> Hi all,
>>
Hi all,
This is a bit of a general question, but hopefully people may have some
suggestions. I've got some drawing code that synthesizes an image in a window,
which will change in response to sliders (e.g. changing the camera
perspective). My problem is how to make it so that the redrawing of t
ing altogether and just set the actual state of the UI element
directly from my code. I'd definitely be interested in understanding what it
sounded like you were suggesting with a "basically read-only" binding though...
Cheers
Jonny
On 8 Jul 2016, at 18:35, Quincey Morris
wro
Hi all,
I'm trying to work out the correct way to handle a mixed-state checkbox
(NSButton checkbox with allowsMixedState=YES), bound to a property on my
controller. I am intending it to serve as an "applies to all" type control at
the head of a column of checkboxes - so if other checkboxes in t
On 6 Jul 2016, at 18:01, Quincey Morris
wrote:
> On Jul 6, 2016, at 03:06 , Jonathan Taylor
> wrote:
>>
>> a single lost frame will be fairly catastrophic for the scientific experiment
>
> If this is genuinely your scenario, then nothing mentioned in this thread is
Thanks for your reply Alastair. Definitely interested in thinking about your
suggestions - some responses below that will hopefully help clarify:
> The first thing to state is that you *can’t* write code of this type with the
> attitude that “dropping frames is not an option”. Fundamentally, th
Thanks everyone for your replies on this second question of mine. Some
responses below:
On 5 Jul 2016, at 18:20, Quincey Morris
wrote:
> What worries me about the Darwin-level (i.e. Unix-level) API suggestions that
> others have made is that you don’t know how these interact with Cocoa apps.
On 5 Jul 2016, at 22:22, "Gary L. Wade" wrote:
> You might need to write some lower level stuff, but some of the things in
> there can be done, albeit differently. Apple knows I've submitted a number of
> bugs and incident reports to get codecs supported in later frameworks. Do the
> same. It m
>> Quicktime.
>
> Oh, you poor thing. That’s one nasty API. (Actually dozens of nasty APIs.) O_o
Yep. I rely on code that I worked out years ago, with the help of examples on
the internet, and I do my best to leave that code untouched!
>> My code has been 32-bit only since I first wrote it, bec
Thanks everyone for your replies - some responses below:
On 5 Jul 2016, at 20:55, Greg Parker wrote:
> A synthesized property must use one of the following types of storage:
> 1. An ivar in that class that @synthesize creates.
> 2. An ivar in that class that you defined yourself.
>
> @synthesize
that by writing
explicit setters/getters, so I will do that.
(*) there are rather a lot of these properties in the actual original code, but
it just involves a lot of typing!
On 5 Jul 2016, at 16:12, Keary Suska wrote:
>
>> On Jul 5, 2016, at 5:36 AM, Jonathan Taylor
>> wrote
Jul 2016, at 13:36, Jonathan Taylor
> wrote:
>>
>> This is a long shot, but I thought I would ask in case an API exists to do
>> what I want. One of the roles of my code is to record video to disk as it is
>> received from a camera. A magnetic hard disk can normall
This is a long shot, but I thought I would ask in case an API exists to do what
I want. One of the roles of my code is to record video to disk as it is
received from a camera. A magnetic hard disk can normally keep up with this,
but if the user is also doing other things on the computer (e.g. lo
Hi all,
I have a problem with property synthesis in my code, which I hope somebody can
advise on. I find I have to write different property synthesis code for 32- or
64-bit builds in order to avoid compiler errors.
A minimal demonstration of the problem can be found below - build as part of a
Hi all,
Does anyone know a way of implementing "tick marks" on a scroll bar, in the way
that Xcode does to mark code lines where there is an error/warning? From
reading header files, I can't see any obvious built-in API to implement this
feature, but perhaps somebody knows of a custom class tha
, Jens Alfke wrote:
>
>> On May 11, 2016, at 2:31 AM, Jonathan Taylor
>> wrote:
>>
>> I guess I just found method naming a bit odd (not really referring to an
>> object at all), and might have expected it to have an ‘alloc/new’ naming
>> since I’d hav
Thankyou both for your replies - a couple of replies below:
On 10 May 2016, at 23:33, Jens Alfke wrote:
>> However, I was a bit surprised to find that I seem to need to explicitly
>> retain the object I get back [this is non-ARC code…] if I want my request to
>> remain in effect or even for the
Hi all,
I’m hoping somebody can help me work out how to protect my code against the
effects of “app nap”. This code is driving a scientific experiment, unattended,
and it is catastrophic when the OS decides that my timers running at 10Hz
should only be fired every 10 seconds or so… which it tur
Thanks Jens & Akis for your replies.
Jens:
> Most filesystems get noticeably slower when working with directories
> containing large numbers of items. HFS+ does better than most, but I wouldn’t
> be surprised if a lot of the slowness you’re seeing is just due to filesystem
> overhead. If you ca
now if
there is a better way.
Jonny.
On 13 Nov 2015, at 16:54, Gary L. Wade wrote:
> Try going down a level to the BSD layer APIs for directory contents traversal.
> --
> Gary L. Wade (Sent from my iPad)
> http://www.garywade.com/
>
>> On Nov 13, 2015, at 8:28 AM, Jonat
Hi all,
I want to be able to identify quickly (programatically) how many image files
reside in a particular directory. At present I call:
[NSFileManager defaultManager] contentsOfDirectoryAtPath:dir error:nil];
and then examine the type suffixes (which in comparison is very quick). When
lookin
Hi Jean,
A wild guess that might or might not have any relevance to your problem: I see
that you are wrapping your blocks with an autorelease pool, and that reminded
me of a problem I dealt with a while back.
As I understand it (and as discussed on this list some while back I think)
pools may
I’ve just noticed a glitch where my custom file preview box in an NSOpenPanel
works fine on OS X 10.9.5 but does not get updated on 10.8.5. Specifically, I
declare a dependency of my property on panel.filenames, panel.URL and
panel.directoryURL (just to see if ANY of them fire), and none of them
.
Hopefully that information might be of some use for posterity.
Cheers
Jonny
On 9 Jul 2015, at 16:18, Ken Thomases wrote:
> On Jul 9, 2015, at 7:05 AM, Jonathan Taylor
> wrote:
>
>> I gave it a try, setting what I thought should be needed, but it doesn’t
>> seem to be havi
On 9 Jul 2015, at 16:18, Ken Thomases wrote:
> On Jul 9, 2015, at 7:05 AM, Jonathan Taylor
> wrote:
>> I gave it a try, setting what I thought should be needed, but it doesn’t
>> seem to be having the desired effect as yet. I have the nib file set to “Use
>> autola
> if (floor(NSAppKitVersionNumber) <= NSAppKitVersionNumber10_8) {
> [accessoryView setTranslatesAutoresizingMaskIntoConstraints:YES];
> }
>
>
>
> On Jul 8, 2015, at 8:33 AM, Jonathan Taylor
> wrote:
>
>> I feel this should be a simple question, but I cannot find
I feel this should be a simple question, but I cannot find an answer that works.
I have an open panel to which I am trying to add an accessory view. That much
works. However I would like the accessory view to resize to fit the width of
the parent window. It’s just a textual description, after al
> The closest I got was creating a macro that uses np_thread_main() (or
> whatever it was called exactly, it’s part of the pthreads API, IIRC) and
> throws if it’s not the main thread. I call that e.g. in
> observeValueForKeyPath overrides whenever I make thread-unsafe calls, so I
> don’t accid
On 23 May 2015, at 00:21, Graham Cox wrote:
> My advice is: forget it. What you’re doing is fine, and it’s the normal way
> to make views repaint when a property changes. It’s not code ‘bloat’ either -
> @synthesize produces code just as if you’d written it yourself. Any other way
> than simply
Thanks for your reply Mike:
> Well you could have a single key which you observe internally, and which all
> the other keys feed into. Whenever it “changes”, treat that as time to mark
> as needing display. That way you’re asking AppKit to do the work of creating
> all the other observations fo
I’m trying to think if there is an elegant way of handling the situation I find
in some of my display code. I have a class which inherits from NSView and which
overrides drawRect. The class has a number of properties, and if they change
then the view needs redrawing. At present I have custom set
> I have a bit of code that posts notifications to coalescing notification
> queue.
> [...]
> In another place I need to force the notification queue to issue a did change
> notification.
>
> This works but the problem is that there are undesirable side effects to
> running the runloop once whe
Thanks for your replies Seth:
>> I am trying to work out whether there are any rules that define which of
>> multiple NSNotifications combined using coalescing actually get through to
>> the receivers, and preferably a way of controlling that behaviour. This
>> becomes relevant if for example t
11:54, Jonathan Taylor wrote:
> I am trying to work out whether there are any rules that define which of
> multiple NSNotifications combined using coalescing actually get through to
> the receivers, and preferably a way of controlling that behaviour. This
> becomes relevant if for e
I am trying to work out whether there are any rules that define which of
multiple NSNotifications combined using coalescing actually get through to the
receivers, and preferably a way of controlling that behaviour. This becomes
relevant if for example there is different UserInfo associated with
>> Am I right in thinking that when running under Xcode any drawing errors will
>> be logged to the Xcode console?
>
> No, not unless they’re actually exceptions. Messages from other processes are
> only going to appear in the system log.
OK, thanks for your suggestion about checking the system
is).
Any other ideas from anyone? Has anybody seen similar symptoms ever in the past
(GUI not responding properly in one single window)?
On 15 Apr 2015, at 18:01, Quincey Morris
wrote:
> On Apr 15, 2015, at 07:04 , Jonathan Taylor
> wrote:
>>
>> From dimly-remembered past exp
I've started encountering intermittent problems in one specific window in my
application, where text input boxes become unresponsive, steppers remain
highlighted after clicking, etc. I'm rather short of ideas on how to debug
this, particular since I haven't worked out how to reproduce it reliabl
I've come back to some old code that I haven't used for a while, and in the
meantime I've done several OS upgrades and Xcode upgrades so plenty has
changed, but my code is behaving in a strange way that I'm sure it didn't used
to.
I have a text field in my GUI bound to a property of type 'doubl
>> Have you tried just displaying an NSOpenPanel yourself then setting the
>> selected URL returned to the path control's URL property?
>>
>> Sent from my iPhone
>>
>>> On 2015/03/17, at 19:16, Jonathan Taylor
>>> wrote:
>>>
>
ng that there doesn't seem to be a way of doing what I had
hoped...
Cheers
Jonny
>
>> On 2015/03/17, at 19:16, Jonathan Taylor
>> wrote:
>>
>> OK, I've got part of the way to a solution, but haven't got it fully working
>> yet. Perhaps the
ng so it behaves correctly?
Thanks again
Jonny
On 15 Mar 2015, at 13:18, Jonathan Taylor wrote:
> I have a dialog which allows the user to select a folder containing data to
> be processed, set various parameters that affect the processing, and displays
> the result of the ana
I have a dialog which allows the user to select a folder containing data to be
processed, set various parameters that affect the processing, and displays the
result of the analysis. There is an NSPathControl (popup) to select the folder.
Inevitably the first thing the user does is choose a folde
tlet -> instance variable that I actually
manipulate. Oh well, if that's the way it's meant to be...
On 23 Sep 2014, at 19:57, Quincey Morris
wrote:
> On Sep 23, 2014, at 11:36 , Lee Ann Rucker wrote:
>
>> On Sep 23, 2014, at 9:15 AM, Jonathan Taylor
>> wr
ake
> sure that selectionIndex (or something similar) from table is linked to
> arraycontroller
>
> On Tue, Sep 23, 2014 at 6:15 PM, Jonathan Taylor
> wrote:
> Hi all,
>
> I feel this should be a very simple question, but I am struggling with it -
> the tutorials and onli
Hi all,
I feel this should be a very simple question, but I am struggling with it - the
tutorials and online info I can find is either 5 years out of date or seem to
imply that I am doing everything right!
In my code I have an NSMutableArray of “message” objects, each with a number of
properti
>> After being impressed with bindings for an NSTableView, I’m looking at what
>> I can do for a standalone NSPopupButton, in the hope of reducing the amount
>> of glue code I have. The button isn’t just a simple one though, I need to:
>> - Include separator items
>> - Disable (grey out) some ite
After being impressed with bindings for an NSTableView, I’m looking at what I
can do for a standalone NSPopupButton, in the hope of reducing the amount of
glue code I have. The button isn’t just a simple one though, I need to:
- Include separator items
- Disable (grey out) some items
- Select mul
>> Ah, I've worked out the underlying problem I've been having. I had been
>> trying things along these lines and completely failing to get the popup menu
>> to populate correctly. It was working for a standalone popup but not within
>> the table, and I was assuming I was doing something wrong a
> I would create a class, say, SignalChannel, with "name" (for description, but
> we may not ant to use "description" for obvious reasons...) and "channelID"
> properties. I would then populate the NSPopupButtonCell with SignalChannel
> objects. This will abstract the model from the view, which
>>> My question then is how should I access the tags in the popup menu in order
>>> to work out which tag corresponds to the selected item in each row?
>>
>> If I understand your setup correctly, the most direct route is to set an
>> action on each menu item.
>
> Ah ok, I've revisited that and
>> My question then is how should I access the tags in the popup menu in order
>> to work out which tag corresponds to the selected item in each row?
>
> If I understand your setup correctly, the most direct route is to set an
> action on each menu item.
Ah ok, I've revisited that and got it t
Hi all,
I am trying to implement a popup menu in an NSTableView column. I seem to have
the bindings all set up so that the values in my NSArray are updated according
to the options the user selects in the table. However, I would like to have
some way of accessing the tag on the menu item that w
I currently have a plist which contains some configuration values; at start of
day I use the following call to make certain "factory settings" available to
the application through NSUserDefaults:
[[NSUserDefaults standardUserDefaults] registerDefaults:[NSDictionary
dictionaryWithContents
distances between the given colour and each of the standard colours,
> and the one with the minimal squared distance is the best match.
>
> Better methods may exist, consult a book on computer vision or fine arts
> maybe?
>
> On Jun 17, 2014, at 18:52, Jonathan Taylor
> wro
Hi all,
Is there a way of identifying the closest match to a given NSColor, out of a
list of possible colors to match? The user could have selected any color using
the color picker, but I would like to know whether it is "approximately red",
green, blue or white.
Of course, it might be e.g. ma
Have you looked at the output from System Trace on both systems? I often find
that to be informative.
That might or might not be the way to tell, but have you considered that the
very different CPU characteristics might mean that the actual timing and
pattern of database commands is different o
On 7 Apr 2014, at 11:25, Keith J. Schultz wrote:
> Hi Jonny,
>
> try Menu items on the fly!
>
> To my knowledge you can not use IB!
Thanks for your reply keith. I hadn't tried those search terms, but no that
didn't get me anything relevant either. All I could find was one old thread in
which
This must be a very basic question, but I am evidently having difficulty
finding the right search terms. Can anyone point me to some sample code that
will show how to implement a menu whose items are populated at runtime? I would
have expected to be able to bind a menu object to an NSArray consi
Thanks Kyle and Jerry.
It feels a bit strange to be adding extra glue code to track
otherwise-completely-autonomous windows (and controllers), but that has
certainly done the trick.
I found the static analyzer a bit odd to get used to - it sometimes gives
purportedly very detailed explanations
This must be an incredibly basic question, but I haven't found an answer I'm
convinced by (apologies if I have missed something on the list). My question
relates to window controllers, and how ownership, retain/release etc should be
managed in order to (a) be correct and (b) satisfy the static a
> Do you have any secondary threads? I assume you do.
Indeed!
> Any code that touches a view, no matter how indirectly, could be the culprit.
> Bear in mind that sending any message to any view (controls, etc) might
> invoke -setNeedsDisplay: which in turn could be the trigger for the problem.
On 4 Sep 2013, at 16:46, Marcel Weiher wrote:
>>> Unless there is some dire reason not to do this, I would make a copy on the
>>> main thread every time the UI changes, and stash that copy somewhere the
>>> worker thread can access it easily.
>>
>> That's a really good plan, I realised that last
> You can't do any UI-related updates from a secondary thread, you must ask the
> main thread to do it.
>
> It might not be progress bars but anything at all that's being drawn from a
> secondary thread. The error itself could indicate that an internal data
> structure was used or updated by an
Can anybody help me diagnose an error that I see intermittently? The errors are
as follows:
Thu Sep 5 10:11:11 Jonathan-Taylors-Mac-Pro.local Spim GUI[34152] :
kCGErrorIllegalArgument: CGSUnionRegionWithRect : Invalid region
Thu Sep 5 10:11:11 Jonathan-Taylors-Mac-Pro.local Spim GUI[34152] :
Thanks to everyone who has chimed in on this one - you've all been really
helpful. Looks like some conclusions are emerging; some selected replies below.
On 3 Sep 2013, at 20:21, Tom Davie wrote:
> Remove the mutation methods. Make your object immutable, the referential
> transparency will giv
Ah. In my original email I didn't explain *why* it is that "ideally I would
like to make the copy on a thread other than the main thread". The algorithm is
doing real-time video processing, and I very much want to avoid holding up
anything in that code path by synchronizing with the main queue.
people are saying as if
that's what I may have to do...
On 3 Sep 2013, at 13:54, Robert Vojta wrote:
> On Tue, Sep 3, 2013 at 2:39 PM, Jonathan Taylor
> wrote:
>
> The primary instance of the object (call it MyParameters) is bound to UI
> elements. Changes to the UI
> Is it possible to reverse the issue? Keep the original object (living on the
> main thread) untouched, make a copy for algorithm processing as an async
> task, then, when done, update the original object from the copy that may have
> been changed during async processing? Or will that cause the
snapshot of the state of the entire object, i.e. copy not taken
while object is being updated. Actually, I suspect this last condition is not a
problem for my specific case, but best to be on the safe side, for several
different reasons.
On 3 Sep 2013, at 12:04, Graham Cox wrote:
>
> O
This feels like it should be a very basic question, but it's not one I've
managed to find an answer to - can somebody here advise?
I have an objective c object which contains a number of properties that serve
as parameters for an algorithm. They are bound to UI elements. I would like to
take a
Thanks for your comments Ken. It was really good to learn about how to use
heapshots effectively, that's definitely something I'm going to use again in
future. In this case it did provide ~some~ more information on what is going on.
Just to be clear, the problem is now solved by wrapping the cor
> It smells like you're doing a lot of processing with temporary objects, in a
> loop, without bracketing the loop body in @autoreleasepool{}, but I remember
> you saying you're not.
Oh dear. Oh dear.
You are right. I know this is what everybody has been telling me all along. I
have a tiny on
> The Allocations instrument should report objects with pending autoreleases as
> ordinary live objects. (Note that many objects with retain count == pending
> autorelease count will be retained again before the autorelease pool pops.)
>
> In OS X 10.8 and iOS 6 simulator, you can set environmen
Thankyou all for your replies. A few responses -
On 4 Jun 2013, at 16:30, Jeff Johnson wrote:
> We've run into this issue in a number of apps. As a workaround, we add a
> timer to the main thread and have it fire periodically. The timer's action
> method does the following:
Thanks again! I've i
ata1:0
> data2:0]
> [NSApp postEvent:event atStart:YES];
>
> This basically "tickles" the event loop and causes the autorelease pool to
> drain.
>
> -Jeff
>
>
> On Jun 3, 2013, at 10:59 AM, Jonathan Taylor
> wrote:
>
>> Hi all,
>>
>&g
Hi all,
Can anybody advise what tools I should be using to debug a particular out of
memory condition - and maybe even how I can fix it? The error that I ultimately
encounter (in a 32-bit application on Snow Leopard) is:
2013-06-03 15:44:30.271 MyApplication[25115:a0f] NSImage: Insufficient memo
Thankyou both for your very helpful replies. The dispatch group approach sounds
like a nice one - especially using dispatch_group_notify, which I had somehow
overlooked. Thanks also Ken for your detailed reply to my ramblings, that was
very useful for getting my understanding straightened out.
J
> If I use this to initiate a background "thread":
>
>
> dispatch_async(dispatch_get_global_queue(0, 0), ^{
>
> // do some stuff
>
> [self runMyFunction];
>
> [self runAnotherFunction];
>
> // do some more stuff
>
> });
>
>
> My question is with my sample calling runMyFunction or runAnothe
this nasty NSAutounbinder thingy then jumps in and re-retains it in some
evil under-the-covers voodoo to do with avoiding retain cycles (as I
understand it). Unfortunately the balancing autorelease only occurs 16
seconds later when I move the mouse! While not catastrophic thi
I am tearing my hair out here with yet another retain issue with the
NSAutounbinder. I don't know what I am doing to keep hitting these problems,
and unfortunately going back through peoples past (very helpful) replies to my
questions on both this and blocks+autorelease pools has not shed any li
>> In practice, NSOperationQueue probably releases the block when it's done
>> with it
>
> I'm curious about your use of the word "probably" here. Can you explain?
This is probably not what the OP had in mind, but I might mention that I've
seen situations where autoreleases associated with NSOp
>> In practice, NSOperationQueue probably releases the block when it's done
>> with it
>
> I'm curious about your use of the word "probably" here. Can you explain?
This is probably not what the OP had in mind, but I might mention that I've
seen situations where autoreleases associated with NSOp
On 24 May 2012, at 16:27, Kyle Sluder wrote:
>> 1. If I do not set B's pointer to A, both A and B are deallocated correctly
>> 2. If instead I set B's pointer to A, but reset it to nil just before B is
>> closed, both A and B are deallocated correctly
>> 3. If instead B still has a live pointer to
I have been battling a retain cycle for a couple of hours, assuming I am at
fault, but I am starting to think there is something fishy going on. Can
anybody advise?
- I have a window controller subclass (and associated window) A, and a separate
window controller subclass (and associated window)
eForKeyPath:ofObject:change:context to update
> the GUI in this context. I don't know of any better method than what the OP
> suggested.
>
> Cheers,
> Dave
>
> On 2012-03-23, at 6:32 PM, Jan E. Schotsman wrote:
>
>> Jonathan Taylor wrote:
>>> I hav
I have been struggling with a problem which I think I have eventually realised
is down to me not handling multithreading issues properly. The situation is I
have some computationally-demanding code that is running in a separate thread.
This has input parameters and state variables associated wit
> Well, in this case I certainly think it would be better to bind the object
> controller to File's Owner.camera. Really, I wasn't so much getting at
> anything in particular, I just find it odd for an object controller to have a
> window controller as its content. I also find it odd to bind t
Hi Ken,
Thanks very much for your reply!
>> I have a window and window controller which in the absence of an object
>> controller work fine, and both are deallocated when the window is closed. If
>> I add an ObjectController to the NIB and bind its "Content Object" to
>> "File's Owner.self" th
Sorry. Re-sending under what I think is a more correct title. I only realised
after I hit send!
Begin forwarded message:
> From: Jonathan Taylor
> Date: 7 November 2011 16:08:13 GMT
> To: cocoa-dev
> Subject: ObjectController preventing window from closing
>
> Hi all,
>
Hi all,
This is probably a very basic question, but I am out of ideas and hoping
someone can offer some help. I should say that I'm afraid I'm somewhat out of
my depth with ObjectControllers: I added some seemingly simple bindings at the
recommendation of a poster on here, and I thought I under
Belated thanks for the various replies to my question. I'm working through the
posted code and links now and looking at what I can learn from it. One query
though:
On 12 Oct 2011, at 16:42, Heinrich Giesen wrote:
> Another rule of thumb is: if you need -[NSImage TIFFRepresentation] you do
> som
I'm working with 16-bit grayscale images, and for the most part I'm just
manipulating bits within NSBitmapImageRep objects. However for convenience it
would be nice to do some stuff with NSImages, particularly when rescaling and
suchlike. The problem is that whenever I draw into such an NSImage
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