Re: CGDisplayRegisterReconfigurationCallback not called when view in fullscreen
Ken You are right. I was capturing the screen. Setting the presentation options in the options dictionary for enterFullScreenMode with options: did the trick. However, with the presentation options set, I am only getting one view to show the other is blacked out (ie the view on the external monitor is shown but the main screen on the built-in display is black). I have tried various presentation options but results are similar. Thanks Tom On Jul 24, 2012, at 8:09 PM, Ken Thomases wrote: > On Jul 24, 2012, at 7:47 PM, Tom Hohensee wrote: > >> Anyone familiar with CGDisplayRegisterReconfigurationCallback callback and >> fullscreen when connecting and disconnecting an external monitor? >> I have written an application that places a custom NSView into fullscreen >> (using enterfullscreenmode with options) on an external monitor while the >> main window remains on the main (built-in screen). The view enters and >> exits as expected but I was trying to cover all my bases and have the >> fullscreen exit gracefully if the external monitor is unplugged while my >> application is running. In my research I came across >> CGDisplayRegisterReconfigurationCallback. > >> When the application is not in fullscreen my application receives and the >> callback function works as expected. However, when the view is in >> fullscreen the callback function is not called when the monitor is >> unplugged. In fact the OS does not update the screen configuration until I >> exit fullscreen (through a test button I implemented on the main window). > > I suspect you're not receiving the callback because the display is captured. > The docs for -[NSView enterFullScreenMode:withOptions:] explain how to avoid > capturing the display. > > Capturing the display means that you're taking over sole responsibility and > access to it. It also means that other apps won't be notified when that > display's configuration is changed. (For example, the Finder won't rearrange > your desktop icons if the display is set to a low-resolution mode.) It's not > obvious to me that that would include preventing your own app from being > informed when the display is disconnected, but apparently it does. > > You might file a bug with Apple. Also, you might ask on the quartz-dev list. > > Regards, > Ken > ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: https://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
CGDisplayRegisterReconfigurationCallback not called when view in fullscreen
Anyone familiar with CGDisplayRegisterReconfigurationCallback callback and
fullscreen when connecting and disconnecting an external monitor?
I have written an application that places a custom NSView into fullscreen
(using enterfullscreenmode with options) on an external monitor while the main
window remains on the main (built-in screen). The view enters and exits as
expected but I was trying to cover all my bases and have the fullscreen exit
gracefully if the external monitor is unplugged while my application is
running. In my research I came across
CGDisplayRegisterReconfigurationCallback. I implemented the callback as
follows
void TheDisplayReconfigurationCallBack ( CGDirectDisplayID display,
CGDisplayChangeSummaryFlags flags,
void *userInfo)
{
if (flags & kCGDisplayAddFlag) {
NSLog (@"Display Added");
}
else if (kCGDisplayRemoveFlag) {
NSLog (@"Display Removed");
[[NSNotificationCenter defaultCenter]
postNotificationName:@"ScreenDisconnected" object:nil];
}
}
and called:
CGDisplayRegisterReconfigurationCallback(TheDisplayReconfigurationCallBack,
NULL);
in a method in my implementation.
When the application is not in fullscreen my application receives and the
callback function works as expected. However, when the view is in fullscreen
the callback function is not called when the monitor is unplugged. In fact the
OS does not update the screen configuration until I exit fullscreen (through a
test button I implemented on the main window).
Any help would be appreciated I think I have exhausted all my google answers
for CGDisplayRegisterReconfigurationCallback.
Thanks
Tom
The applications runs on both 10.6 and 10.7.
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Re: Base64 encoding of NSImage
Try here. it is a category for nsdata in this post. http://www.thohensee.com/?page_id=435 Tom Sent from my iPhone On Jul 1, 2012, at 10:26 AM, Alexander Hartner wrote: I am looking at available option to send an NSImage to a webserver. I came across gSoap however its licensing model makes it not suitable. Using REST / JSON seems like an easy option however NSDATA does not seem to be supported by the JSON Serialiser. The one remaining option I considered was to encode the image myself to base64 before including in the JSON request. This could work quite nicely, however there doesn't seem to be a standard method for base64 encoding. Any suggestion on how to best achieve this. Kind regards Alex ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: https://lists.apple.com/mailman/options/cocoa-dev/tom.hohensee%40gmail.com This email sent to tom.hohen...@gmail.com ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: https://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: Carousel - like control for Mac OS
Have a look at iCarousel. Has a port for iOS as well as Mac OS. This can be done with ImageKit in IB as well. Just disable the scroll view and setup forward and back buttons that call the image index (nextIndex, etc). See imageKit docs. Tom On Dec 20, 2011, at 3:00 PM, Nick wrote: > Hello > I am wondering, if a component exists similar to this > http://www.ajaxdaddy.com/demo-jquery-carousel.html > for Mac OS. > > Basically, what I need is just "next" and "previous" buttons (and > these images smoothly scrolled one image per "next" or "prev" button > click). > > At the moment I am trying to implement it on my own. > This seems to be a simple NSScrollView with hidden scroll bars whose > inner view has these image views added as subviews. > > However, I am not sure how to implement smooth scrolling of one image > per click. I guess I need to use Core Animation? > Are there any simple examples that I could look at? > ___ > > Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) > > Please do not post admin requests or moderator comments to the list. > Contact the moderators at cocoa-dev-admins(at)lists.apple.com > > Help/Unsubscribe/Update your Subscription: > http://lists.apple.com/mailman/options/cocoa-dev/tom.hohensee%40gmail.com > > This email sent to tom.hohen...@gmail.com ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: IKImageBrowserView spinning animation on the Cell
Create a CALayer with the spinning effects. and use the following IKImageBrowser cell Core Animation layer method. - (CALayer *)layerForType:(NSString *)type where NSString is a “Cell Layer Positions” type IKImageBrowserCellForegroundLayer. For the spinning effects layer have a look at https://github.com/kelan/yrk-spinning-progress-indicator-layer. You should be able to use the YPKSpinningProgressLayer classes for what you need. Tom On Oct 29, 2011, at 7:58 AM, XiaoGang Li wrote: > IKImageBrowserCel ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: Best way to parse a time today?
I use the same approach the Roger pointed out and have not encountered any problems as well. However, I not only set the time but the date (month, day, year) as well. The DST boundries should not matter since I am decomposing today's date [NSDate date], which is set by the end user's time settings in system preferences. Is this not correct? Thanks. Tom On Oct 12, 2011, at 9:01 PM, Roger Dalal wrote: > Dave: > > Would it be possible for you to present an improved approach, please? I use > this solution frequently, and have not yet encountered any issues, but now > you have me worried! What approach do you suggest? > > Roger Dalal > > > On Oct 12, 2011, at 9:49 PM, Dave DeLong wrote: > >> Be careful with this approach, since there are some weird edge cases where >> that time may not exist on the proposed day (think DST boundaries). >> >> Dave >> >> Sent from my iPhone >> >> On Oct 12, 2011, at 6:46 PM, Roger Dalal wrote: >> >>> Rick: >>> >>> The following code, which is likely what you are doing, will return the >>> time in 1970 (NSDate's reference date) because you have not specified a >>> date: >>> >>> NSString *timeString = @"14:50 PDT"; >>> NSDateFormatter *df = [[NSDateFormatter alloc ] init]; >>> [df setDateFormat:@"HH':'mm zzz"]; >>> NSDate *date = [df dateFromString:timeString]; >>> [df release]; >>> >>> >>> Instead, you need to use date components to set the day as well as the >>> time, per the following: >>> >>> NSString *timeString = @"14:50 PDT"; >>> NSDateFormatter *df = [[NSDateFormatter alloc ] init]; >>> [df setDateFormat:@"HH':'mm zzz"]; >>> NSDate *date = [df dateFromString:timeString]; >>> >>> NSCalendar *calendar = [NSCalendar currentCalendar]; >>> NSDateComponents *dateComponents = [calendar components:( >>> NSYearCalendarUnit | NSMonthCalendarUnit | NSDayCalendarUnit ) >>> fromDate:[NSDate date]]; >>> NSDateComponents *timeComponents = [calendar components:( >>> NSHourCalendarUnit | NSMinuteCalendarUnit | NSSecondCalendarUnit ) >>> fromDate: date ]; >>> >>> [dateComponents setHour:[timeComponents hour]]; >>> [dateComponents setMinute:[timeComponents minute]]; >>> [dateComponents setSecond:[timeComponents second]]; >>> >>> NSDate *timeToday = [calendar dateFromComponents:dateComponents]; >>> [df release]; >>> >>> Change 'fromDate' in NSDateComponents *dateComponents to whatever date you >>> want in order to create your time on a different day. >>> >>> Best Wishes. >>> >>> Roger Dalal >>> >>> >>> >>> >>> On Oct 12, 2011, at 9:30 PM, Rick Mann wrote: >>> I have a situation where I have to parse times like "14:50 PDT". If I just set up an NSDateFormatter with dateFormat = @"HH:mm z", I end up with a time of day in 1970. What's the best way to get it to give me that time of day today? Thanks, Rick ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/roger.dalal%40gmail.com This email sent to roger.da...@gmail.com >>> >>> ___ >>> >>> Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) >>> >>> Please do not post admin requests or moderator comments to the list. >>> Contact the moderators at cocoa-dev-admins(at)lists.apple.com >>> >>> Help/Unsubscribe/Update your Subscription: >>> http://lists.apple.com/mailman/options/cocoa-dev/davedelong%40me.com >>> >>> This email sent to davedel...@me.com > > ___ > > Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) > > Please do not post admin requests or moderator comments to the list. > Contact the moderators at cocoa-dev-admins(at)lists.apple.com > > Help/Unsubscribe/Update your Subscription: > http://lists.apple.com/mailman/options/cocoa-dev/tom.hohensee%40gmail.com > > This email sent to tom.hohen...@gmail.com ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: creating multiple NSTimers
Thanks for the discussion. What I implemented last night was what Graham had suggested. I simply bind my table column values to an NSArrayController controller and observed by KVO in my set box object. It works great. I think this is also what Conrad had meant as well. Simply changing the time updates or invalidates the timer for each box. It is far more elegant that what I was originally doing. Not to carry this discussion too long, I created this confusion in my head by looking at a project I did 4 years ago while developing a sprinkler controller. In that project I ended up creating a schedule object which was a property for each relay on a controller board which was as an object as well. Each relay (sprinkler zone) had an address, on and off commands and an indeterminate number of schedule objects as properties. If you think about this it is quite challenging as you can very easily end up with 100's of timers on the run loop at any one time. Many of these timers (on a 7 day schedule) would be sitting around for days waiting to fire. For just one relay you would have at a minimum 2 timers (on and off timers) a day. Each relay was on a relay board with 12 relays. Complicating matters was the fact that here (drought stricken Texas) many areas are running a sprinkler zone at multiple short interval times per day (mainly at night). To avoid having all of these timers on the run loop I ended up using the one initial timer that when fired started a loop through the array of timers. But keep in mind that each "on" command timer also had an "off" command timer as well as setting up the next on timer. Also keep in mind that only one zone can be on at a time due to water pressure (this being the difference between this set top box project and the sprinkler project). etc. Anyway food for thought. Tom On Sep 30, 2011, at 3:37 AM, Conrad Shultz wrote: > -BEGIN PGP SIGNED MESSAGE- > Hash: SHA1 > > On 9/30/11 12:29 AM, Thomas Davie wrote: > >>> When the user updates a timer, one is forced to re-sort the >>> array and reposition the index (under the above implementation). >> >> Why would you need to resort? Just remove, and reinsert. > > OK, I'll grant you it's a fast re-sort, but you still have to find the > new insertion point and move the index (if needed). > >>> One would also have to implement the scheme carefully, >>> particularly if the shut-off code is offloaded onto separate >>> threads, to avoid potential race conditions arising from a user >>> changing a fire date in the middle of a shut-off sequence. >> >> Careful locking required in multithreaded environment – >> unsurprising. > > Of course, though my gut feeling (admittedly happening at a time of > day where I'm fast fading and likely to put my foot in my mouth...) is > that the locking would be simpler if one had discrete timers that can > be scattered across threads (or run their invocations on separate > threads - though that might be unsuitable for the task at hand). I > haven't sat down and implemented this (as you evidently have), so I > must confess I don't have much to stand on here. > >>> And as Graham mentioned, polling is probably less CPU and power >>> efficient than using timers anyway. >> >> Who's suggesting polling - you simply have one timer set for the >> time at which the first of your actual timers goes off. When it >> goes off, you fire the first of your actual timers, and reschedule >> your "when do other timers go off" timer. > > OK, my apologies, I got turned around and had the earlier suggestion > about a high-resolution poll still stuck in my head. You're > absolutely right - no one is suggesting polling in the above. > >>> Am I missing something conceptually here? Why are people >>> pushing for the single timer model? Is there some hidden >>> complexity in a multi-timer approach that I'm not seeing? >> >> I implemented the single timer model yesterday, but I have to >> admit, the reason was because I'm targeting GNUstep, and when I >> stared at their source I discovered that they simply itterate >> through *all* timers every run loop iteration checking if they've >> gone off, their code also starts NSLogging warnings if you have >> more than 1000 timers. I have no idea if apple's solution is >> better than GNUstep's, but if it isn't, the single timer approach >> would be vastly beneficial. > > Wow, I have to imagine there are a fair number of timers getting fired > off throughout the system all the time for various tasks and that > Apple would have optimized it more thoroughly. > > But a cursory inspection of the most recent open source CFRunLoop.c > suggests that indeed is what is happening inside __CFRunLoopDoTimers. > It's possible that I'm missing something in my tired state, but it > sure does look like a simple loop. (There's a lot of magic happening > in __CFRunLoopDoTimer, but it still gets called during each loop > iteration.) > > Huh... c
Re: creating multiple NSTimers
Bingo! Thanks. This is where I was going wrong. I saw John and Jamie's responses earlier and got me thinking in objects again. But still wasn't putting it together. I had a mental block and was not thinking of the timers as properties of the boxes. Just kept getting stuck on the NSTimer object being the object. Man it is hard to get off of a train of though sometimes. Ultimately each facility has between 20 and 30 boxes. I really did not want to poll. Thanks again Tom On Sep 29, 2011, at 7:27 PM, Graham Cox wrote: > Timers are objects, and can be retained like any other independently of > whether they are scheduled on a run loop or not. The run loop will > additionally retain the timer, but that's its business. > > In the object that represents the set-top box, just add a 'timer' property > (retained), so that you can get the timer associated with the box. Then you > are free to invalidate it, reschedule it, add it or remove it from the run > loop at will. While leaving the run loop to manage its timers is the usual > M.O., if you need more control, then all you need to do is take it. > > Depending on how many set-top boxes there are likely to be (I'm guessing tens > rather than thousands), then a separate timer per box is probably a good idea > rather than have one timer which is repeatedly compared against a list of > schedule times, which amounts to polling and hence will mean waking up the > thread more often than necessary. > > --Graham > > > On 30/09/2011, at 9:48 AM, Tom Hohensee wrote: > >> Sorry, I started this out wrong. I am probably over thinking this to the >> point of confusion. Here is where I am. >> I have an application for a facility that uses a number of ip enabled set >> top boxes to drive TV's throughout the place. Each box is to be shutdown >> at certain times of the day depending on what part of the facility is closed >> for the day. In my app the user sets up a configuration in an NSTable >> whereby each device is set to shut down at a certain time each day. From >> this configuration, I setup timers to correspond to the shutdown time and >> have them repeat each 24 hours. I originally thought I would simply load >> each into the runloop using NSTimers class method >> +scheduledTimerWithTimeInterval:target:selector:userinfo:repeats. without >> retaining a reference to it. But I ran into the problem of the user >> changing a device's shutdown time while the app is running. I needed to >> retain a reference to the timer to invalidate it . In other words, if the >> user comes along and wants to change the configuration (a shut down time) of >> one device while the app is running I need to be able to stop the timer that >> is currently in the run loop and use the new configuration. Without >> invalidating that timer would I not have an active timer in the run loop on >> top of what is created by new configuration? I then moved on the creating >> timers and instead of loading them into the run loop I would load them into >> an array and and sort them according to time. I then loop through the array >> loading only the first timer of the array into the run loop and retain a >> reference to it. Each firing of the timer loads the next timer into the run >> loop and retains a reference to it. But this has other issues particularly >> when firing times are real close together. >> >> At this point I need a fresh prospective on this. Any thoughts would be >> greatly appreciated. > > ___ > > Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) > > Please do not post admin requests or moderator comments to the list. > Contact the moderators at cocoa-dev-admins(at)lists.apple.com > > Help/Unsubscribe/Update your Subscription: > http://lists.apple.com/mailman/options/cocoa-dev/tomhoh%40mac.com > > This email sent to tom...@mac.com ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: creating multiple NSTimers
Sorry, I started this out wrong. I am probably over thinking this to the point of confusion. Here is where I am. I have an application for a facility that uses a number of ip enabled set top boxes to drive TV's throughout the place. Each box is to be shutdown at certain times of the day depending on what part of the facility is closed for the day. In my app the user sets up a configuration in an NSTable whereby each device is set to shut down at a certain time each day. From this configuration, I setup timers to correspond to the shutdown time and have them repeat each 24 hours. I originally thought I would simply load each into the runloop using NSTimers class method +scheduledTimerWithTimeInterval:target:selector:userinfo:repeats. without retaining a reference to it. But I ran into the problem of the user changing a device's shutdown time while the app is running. I needed to retain a reference to the timer to invalidate it . In other words, if the user comes along and wants to change the configuration (a shut down time) of one device while the app is running I need to be able to stop the timer that is currently in the run loop and use the new configuration. Without invalidating that timer would I not have an active timer in the run loop on top of what is created by new configuration? I then moved on the creating timers and instead of loading them into the run loop I would load them into an array and and sort them according to time. I then loop through the array loading only the first timer of the array into the run loop and retain a reference to it. Each firing of the timer loads the next timer into the run loop and retains a reference to it. But this has other issues particularly when firing times are real close together. At this point I need a fresh prospective on this. Any thoughts would be greatly appreciated. Tom On Sep 29, 2011, at 5:15 PM, David Duncan wrote: > I think you need to backup and explain exactly what your requirements are. If > you really do need to track these timers, you will probably need an array or > dictionary, but if these timers are all one-shot and they configure the next > timer to execute, there seems little reason to maintain your own owning > reference to them... > > On Sep 29, 2011, at 3:06 PM, Tom Hohensee wrote: > >> Yes. What I have worked on is using an array of timers fired sequentially. >> Each firing of the timer sets up the next one in the array. Each new >> addition to the array requires invalidating of the active timer and >> reordering of the array according to times. But i have run into problems >> when two or more timers are set to fire at the same time. >> >> Tom >> >> On Sep 29, 2011, at 4:51 PM, David Duncan wrote: >> >>> On Sep 29, 2011, at 2:47 PM, Tom Hohensee wrote: >>> >>>> However, I do not know wether the user will have 1 device or 100 devices. >>>> Do I have to setup a finite amount of timers (ultimately having a limit on >>>> the number of devices that can be added) or is there a better way? I have >>>> googled for a while now trying to find example code but have come up empty >>>> (plenty of finite examples). I see there are timer applications out there >>>> that seem to handle an infinite number of timers. >>> >>> >>> Have you looked into NSMutableArray? >>> -- >>> David Duncan >>> >>> ___ >>> >>> Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) >>> >>> Please do not post admin requests or moderator comments to the list. >>> Contact the moderators at cocoa-dev-admins(at)lists.apple.com >>> >>> Help/Unsubscribe/Update your Subscription: >>> http://lists.apple.com/mailman/options/cocoa-dev/tomhoh%40mac.com >>> >>> This email sent to tom...@mac.com >> > > -- > David Duncan > ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: creating multiple NSTimers
Yes. What I have worked on is using an array of timers fired sequentially. Each firing of the timer sets up the next one in the array. Each new addition to the array requires invalidating of the active timer and reordering of the array according to times. But i have run into problems when two or more timers are set to fire at the same time. Tom On Sep 29, 2011, at 4:51 PM, David Duncan wrote: > On Sep 29, 2011, at 2:47 PM, Tom Hohensee wrote: > >> However, I do not know wether the user will have 1 device or 100 devices. >> Do I have to setup a finite amount of timers (ultimately having a limit on >> the number of devices that can be added) or is there a better way? I have >> googled for a while now trying to find example code but have come up empty >> (plenty of finite examples). I see there are timer applications out there >> that seem to handle an infinite number of timers. > > > Have you looked into NSMutableArray? > -- > David Duncan > > ___ > > Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) > > Please do not post admin requests or moderator comments to the list. > Contact the moderators at cocoa-dev-admins(at)lists.apple.com > > Help/Unsubscribe/Update your Subscription: > http://lists.apple.com/mailman/options/cocoa-dev/tomhoh%40mac.com > > This email sent to tom...@mac.com ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
creating multiple NSTimers
For the life of me I cannot figure this one out. I need to create an indeterminate amount of timers for an app I am working on. The app is petty simple. For example, provide a list of ip enabled devices with times to shut off and the app executes the device's shutdown at the specified time. I need to retain a reference to each timer so that I can invalidate the timer if necessary. Obviously setting up one timer or two timers is not a problem. NSTimer *myTimer1; NSTimer *myTimer2; etc. However, I do not know wether the user will have 1 device or 100 devices. Do I have to setup a finite amount of timers (ultimately having a limit on the number of devices that can be added) or is there a better way? I have googled for a while now trying to find example code but have come up empty (plenty of finite examples). I see there are timer applications out there that seem to handle an infinite number of timers. Thanks Tom___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: JSON Parser
I did give JSONKit a quick run and ran into some issues that I think are the 64bit issue you are referring to. I did not spend a whole lot of time trying to figure it out. That is when I decided to ask the list. I am going to give JSON framework a try. I see that there are some performance differences between the two but I should be ok as the JSON responses are short and request are few. Thanks for the responses Tom On Sep 8, 2011, at 1:37 PM, Jens Alfke wrote: > > On Sep 8, 2011, at 10:25 AM, Tom Hohensee wrote: > >> I have recently come across the need to handle JSON in an application I am >> working on for 10.6 and 10.7. After googling for a parser I came across >> several of them but some look abandoned. I am unsure which to pick. Anyone >> know of a good current JSON parser for cocoa in 10.6 and 10.7? > > I’ve been using JSONKit. It claims to be the fastest, and it’s easy to add to > a project because it’s only one .m and one .h file. > > As of a month ago, though, it wasn’t compatible with 64-bit apps on 10.7 > (it’s groping the internals of NSObjects, and there’s a new optimization to > the representation of NSNumbers that caused that to crash.) Hopefully this > has been fixed. I worked around the problem by conditionally using the > built-in NSJSONParser instead when running on 10.7. > > —Jens ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
JSON Parser
I have recently come across the need to handle JSON in an application I am working on for 10.6 and 10.7. After googling for a parser I came across several of them but some look abandoned. I am unsure which to pick. Anyone know of a good current JSON parser for cocoa in 10.6 and 10.7? Thanks Tom ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: IKImageBrowserView
How are you handling the drag operation? Sent from my iPhone On Aug 9, 2011, at 2:49 PM, koko wrote: > I have implemented > > - (void) imageBrowser:(IKImageBrowserView *) view removeItemsAtIndexes: > (NSIndexSet *) indexes > > and > > - (BOOL) imageBrowser:(IKImageBrowserView *) aBrowser moveItemsAtIndexes: > (NSIndexSet *)indexes toIndex:(NSUInteger)destinationIndex > > They are in the same file. removeItemsAtIndexes is called as expected. > > moveItemsAtIndexes is not called when I select images in the view and drag. > > I have seen questions on this being encountered by others but no solution. > > any help would be appreciated. > > -koko___ > > Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) > > Please do not post admin requests or moderator comments to the list. > Contact the moderators at cocoa-dev-admins(at)lists.apple.com > > Help/Unsubscribe/Update your Subscription: > http://lists.apple.com/mailman/options/cocoa-dev/tom.hohensee%40gmail.com > > This email sent to tom.hohen...@gmail.com ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: Scanning images
Ikscannerdevice (part if image kit) and its related classes is the new method going forward. There is a drop in IB solution. Double check 10.5 compatibility. Really easy. Sent from my iPhone On Aug 9, 2011, at 10:43 AM, Eric Matecki wrote: > Hi Tom, > > Yes I'm talking about scanner devices. > But I don't have to support versions EARLIER than 10.5, but from 10.5 to 10.7. > > So is it twain or ICA ? > Which one should have the longest life ? > > Thanks. > > Tom Hohensee wrote: >> If you are talking getting images from scanner device. You need TWAIN for >> versions earlier than 10.5 >> Sent from my iPhone >> On Aug 9, 2011, at 10:14 AM, Eric Matecki wrote: >>> Hello, >>> >>> I need to scan images into my app. >>> Which technology should I use, it has to work from 10.5.x upwards, PPC and >>> Intel, 32 and 64 bits. >>> >>> I know only of ICA. >>> Is there something "better" (ICA dates back to 10.2) ? >>> >>> Thanks. >>> >>> -- >>> Keep intel OUTSIDE my Mac ! >>> Hiii !!! I can see Intel chips creeping around my G5 ! >>> >>> Eric M. >>> ___ >>> >>> Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) >>> >>> Please do not post admin requests or moderator comments to the list. >>> Contact the moderators at cocoa-dev-admins(at)lists.apple.com >>> >>> Help/Unsubscribe/Update your Subscription: >>> http://lists.apple.com/mailman/options/cocoa-dev/tomhoh%40mac.com >>> >>> This email sent to tom...@mac.com > > > -- > Keep intel OUTSIDE my Mac ! > Hiii !!! I can see Intel chips creeping around my G5 ! > > Eric M. > ___ > > Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) > > Please do not post admin requests or moderator comments to the list. > Contact the moderators at cocoa-dev-admins(at)lists.apple.com > > Help/Unsubscribe/Update your Subscription: > http://lists.apple.com/mailman/options/cocoa-dev/tom.hohensee%40gmail.com > > This email sent to tom.hohen...@gmail.com ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: standardDefaults
Terminal commands to unhide user/Library in Lion chflags nohidden ~/Library/ chflags hidden ~/Library Tom Hohensee > I'm not seeing a user/library/Preferences folder on Lion. Where are they > hiding application pLists in Lion (searching for them doesn't find any). > > Tony > 3CAAM > ___ > > Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) > > Please do not post admin requests or moderator comments to the list. > Contact the moderators at cocoa-dev-admins(at)lists.apple.com > > Help/Unsubscribe/Update your Subscription: > http://lists.apple.com/mailman/options/cocoa-dev/tom.hohensee%40gmail.com > > This email sent to tom.hohen...@gmail.com ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: Cocoa-preferred licensing key style?
http://www.aquaticmac.com/ Sent from my iPhone On May 29, 2011, at 6:58 PM, Todd Heberlein wrote: > 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 plist file in /Library/Preferences. Is this a good idea? > > Are there any standard Cocoa classes/frameworks that are helpful for using > license keys? > > Thanks, > > Todd > > ___ > > Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) > > Please do not post admin requests or moderator comments to the list. > Contact the moderators at cocoa-dev-admins(at)lists.apple.com > > Help/Unsubscribe/Update your Subscription: > http://lists.apple.com/mailman/options/cocoa-dev/tom.hohensee%40gmail.com > > This email sent to tom.hohen...@gmail.com ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
IKScannerDeviceView transferMode set to memory
I am currently rewiring a scanner application which I originally wrote some years ago using the TWAIN driver directly into the more modern ImageKit IKScannerDeviceView . I thought that I could customize it enough to meet my needs without having to build it using ImageCaptureCore framework with extremely limited docs. I am gathering most of my info from the headers which is not to poorly documented but still limited. Before I abandon the convenience of IKScannerDeviceView, I want to confirm some troubles I am having with it to be sure that I am not missing some undocumented methods or workaround. I have been googling for days through this process but have turned up empty. The goal of my app is to have a scan (or multiple scans) go into memory and converted to a multi PDF document by my controller class. Limited UI settings needed. 1. Memory Mode. Setting up purely in IB using an IKDeviceBrowserView to discover the scanner(s) and setting IKScannerDeviceView as it's delegate works well. However, setting the transferMode to memory in IB does not work. Basically what I end up with is the Image capture app (file mode only). I have tried setting my controller as the delegate and handling the IKDeviceBrowserView delegate - (void)deviceBrowserView:(IKDeviceBrowserView *)deviceBrowserView selectionDidChange:(ICDevice *)device Here I set the transferMode manually and it works. However if I change the functionalUnit on the scanner using the standard IKScannerDeviceView (ie from flat bed to document feeder) I am back to file mode permanently. I am not sure why this is happening as from what I can tell from the headers the functional unit change simple makes multiple (1 per page or image in doc feeder mode) calls to IKScannerDeviceView delegate - (void)scannerDeviceView:(IKScannerDeviceView *)scannerDeviceView didScanToURL:(NSURL *)url fileData:(NSData *)data error:(NSError *)error. There seems to be no other place to set the transferMode that would affect this. I have tried various other customizations in IKDeviceBrowser delegate method and they work as well as survive the functionalUnit change. 2. UI elements. In IB I am able to choose between Simple and Advance modes, Post processing and various UI other options. Setting them in IB works. However, the checkbox for "select separate items" is the only UI item that is not able to be set or removed. I find this odd as It is the only element that is not an option in IB or documented in the headers. Are these Bugs in IKScannerView IB or am I just missing something? Thanks Tom___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: Mac App Store requirements
Yes I second what Todd has said. I am currently working on receipt validation for my third app store app. I did not do it for my first two apps, too many other thinks to worry about. The documentation is not very good at this point. Tom On Apr 10, 2011, at 6:45 PM, Todd Heberlein wrote: 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 this that you can read once you join the developer program. Validating the receipt is optional. Having recently gone through this with my first application, I generally would not recommend it for version 1.0 of someone's first app (unless it is a very expensive app). It is surprisingly complex and poorly documented, and there are too many other things to worry about when getting your first app through the approval process. If you want copy protection (which is what receipt validation in about), I would leave it until the first update to your application or the second app you submit. Todd ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/tomhoh%40mac.com This email sent to tom...@mac.com ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: Mac App Store requirements
Not yet. You have some setup work to do in itunesconnect. Apple provides a step by step guideline for submission Sent from my iPhone On Apr 10, 2011, at 2:28 PM, Artemiy Pavlov wrote: > I am aware of this, and I meant only the technical side. So I built a Cocoa > app with XCode, so I can join the developer programme and I am ready to go > just like that? > > A. > > On 10 Apr 2011, at 21:47, Laurent Daudelin wrote: > >> There is a set of guidelines about things you should avoid if you don't want >> your app to be rejected. Not sure if it's available to non-registered Mac >> developers but I think it should. >> >> -Laurent. >> -- >> Laurent Daudelin >> AIM/iChat/Skype:LaurentDaudelinhttp://www.nemesys-soft.com/ >> Logiciels Nemesys Software laur...@nemesys-soft.com >> >> On Apr 10, 2011, at 11:16, Artemiy Pavlov wrote: >> >>> Hey all, >>> >>> I am not yet a member of the Mac Developer program, but I am experimenting >>> with my own Cocoa OS X app and I would like to know what are the >>> requirements on getting it into the Mac App Store. >>> >>> I mean, I have a 32/64 bit Intel build of a vanilla Cocoa app in XCode. >>> Where will I go from there? Apart from signing the code with a certificate >>> that you receive from Apple, what one needs to do to get his app bundle >>> into the Mac App Store? >> > > ___ > > Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) > > Please do not post admin requests or moderator comments to the list. > Contact the moderators at cocoa-dev-admins(at)lists.apple.com > > Help/Unsubscribe/Update your Subscription: > http://lists.apple.com/mailman/options/cocoa-dev/tom.hohensee%40gmail.com > > This email sent to tom.hohen...@gmail.com ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: how would a beginner know about built-in outlets?
Yes it is kind of odd. When I moved on from C to Objective-C and Cocoa I found there are many disconnects in the documentation. More specifically, IB and class documentation seems to not tie in very well just as you are pointing to in you question. I always figured it was because some concepts (and classes) where so broad and complex that it is best to limit the scope. As to why it is not in the header files? I cannot specifically recall any class header files that list the built in outlets. Anyway, very early on I got into the habit of checking for built in outlet in IB first then googling from there if needed. Tom On May 10, 2010, at 7:31 PM, Matt Neuburg wrote: I've been thinking about how to explain to a beginner that some classes have built-in outlets, and it strikes me that the documentation falls down here. For example, you know and I know that a UIViewController has a view outlet; it is visible in the Connections inspector in IB when you select an object that's a UIViewController (or a subclass thereof). But the UIViewController class documentation never mentions this fact; and neither does the header, if it comes to that. Doesn't this strike you as kind of odd? m. -- matt neuburg, phd = m...@tidbits.com, http://www.tidbits.com/matt/ pantes anthropoi tou eidenai oregontai phusei Among the 2007 MacTech Top 25, http://tinyurl.com/2rh4pf AppleScript: the Definitive Guide, 2nd edition http://www.tidbits.com/matt/default.html#applescriptthings Take Control of Exploring & Customizing Snow Leopard http://tinyurl.com/kufyy8 RubyFrontier! http://www.apeth.com/RubyFrontierDocs/default.html TidBITS, Mac news and reviews since 1990, http://www.tidbits.com ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/tomhoh%40mac.com This email sent to tom...@mac.com ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: Serial device open(2) hang.
Steve,
Serial out is the tty prefixed with cu.
./a.out/dev/cu.USA49W62P1.1
Tom
On Jun 27, 2009, at 7:55 PM, Steve Checkoway wrote:
I have a Keyspan USA-49WLC USB to 4 serial ports adapter which, when
plugged in, correctly shows 4 /dev/tty.USA* and 4 /dev/cu.USA*
devices. I'm trying to talk to a microcontroller on the other end of
the serial, reading and writing data, so the first step I'm taking
is to open(2) the appropriate tty. As far as I can tell, this is
hanging until I unplug the USB cable. Once I unplug it, it returns
-1.
[mb:~/temp/serial] steve$ cat gah.c
#include
#include
#include
int main( int argc, char *argv[] )
{
if( argc != 2 )
{
fprintf( stderr, "Usage: %s device\n", argv[0] );
return 1;
}
puts( "Opening file" );
int fd = open( argv[1], O_RDWR );
if( fd == -1 )
{
perror( argv[1] );
return 1;
}
puts( "Opened!" );
close( fd );
return 0;
}
[mb:~/temp/serial] steve$ gcc -Wall gah.c
[mb:~/temp/serial] steve$ ./a.out /dev/tty.USA49W62P1.1
Opening file
/dev/tty.USA49W62P1.1: Device not configured
This same code, when run on Linux using /dev/ttyS0, works as I
would expect: It prints "Opening a file" and then "Opened!".
Is this a problem with the Keyspan driver or (as is more likely) am
I doing something wrong?
--
Steve Checkoway
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Re: Serial port access from C / Objective C
If you want to access the serial port via Objective-C classes try
AMSerialPort. It is a collection of classes to access serial ports. I
have used it extensively for my serial programs and it works very well.
Tom
On Jun 15, 2009, at 5:10 PM, Vansickle, Greg wrote:
I'm trying to communicate with a Photo Research Spectral photometer
via USB. The device responds to simple ascii commands via a terminal
program.
I have no problem accessing this via the screen command from
Terminal. I need to get to the same capability from a Cocoa project.
From terminal I'd enter:
screen /dev/cu.usbmodem1a21
Once the screen utility starts, I simply type PHOTO (no carriage
return) and the device would respond "REMOTE MODE" (no carriage
return) and the spectro photometer displays "REMOTE" on it's panel.
Here's the C code I'm trying to make work. It's Apples
SerialPortSample, stripped to it's minimum (so I understand what's
important and what's fluff ...)
#include
#include
#include
int main(void)
{
intfileDescriptor;
const char *bsdPath = "/dev/cu.usbmodem1a21";
const char *cmdString = "PHOTO";
inthandshake, numBytes;
int result;
char buffer[256];
char *bufPtr;
fileDescriptor = open(bsdPath, O_RDWR | O_NOCTTY |
O_NONBLOCK); // returns 3
if (fileDescriptor == -1) { return -1;}
result = ioctl(fileDescriptor, TIOCEXCL);
if (result == -1) { return
-1; }// returns 0
result = ioctl(fileDescriptor, TIOCMGET,
&handshake); // returns 0, handshake is 0x26
numBytes = write(fileDescriptor, cmdString,
strlen(cmdString)); // returns 5
bufPtr = buffer;
numBytes = read(fileDescriptor, bufPtr, 15); // returns -1
close(fileDescriptor);
return 0;
}
If I remove the read and write, the USB device opens and closes
properly, i.e. I can access the device successfully using the screen
command again.
With the write / read in place, although the write appears to work
(numbytes returns 5), the photometer does not respond (I get no
"REMOTE" indication on the instrument panel. The subsequent read
fails (returns -1).
I've never programmed at the device level like this, so please
confirm my assumption - I do not need to set the baud rate, parity
and all that as the device appears to default to a sane state.
(Screen utility doesn't set it, I assume the default values are set
in the device it self.)
FWIW, the complete SerialPortSample code, complete with setting up
the terminal, baud, parity, ... and changing the command strings,
behaved the same way. I stripped all this out in case the problem
was setting this stuff up.
Any pointers appreciated.
Greg
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Re: generation of software license keys
Try AquaticPrime. It is very good and has good documentation. Tom On Jun 8, 2009, at 2:57 AM, Matthew Delves wrote: Hey Folks, I'm looking for a tutorial or some sample code for creating software licenses for an app I'm developing. Unfortunately the interwebs seem to be rather confusing with regard to this topic. Any help would be greatly appreciated. Thanks, Matt Delves ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/tomhoh%40mac.com This email sent to tom...@mac.com ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: Making an NSButton appear selected.
I think what you want is to set the button to enabled or not through
the action of another button? Since NSButton is a subclass on
NSControl you could use the setEnabled method.
interface
IBOutlet NSButton *Abutton;
IBOutlet NSButton *Bbutton;
implementation
-(IBAction)someActionMethod:(id)selector
{
[Abutton setEnabled:NO];
[Bbutton setEnabled:YES];
...
..
...
}
You can set the state of the other button in the action method.
On Jun 5, 2009, at 6:41 AM, Shraddha Karwan wrote:
I have a series of buttons of type NSButton.
When a particular button is selected, I want to make it appear gray
as in
this button is selected. When another button is selected, I need to
change
the color of the previously selected button from Gray to normal. By
gray I
mean textured.
How do I achieve this?
--
Regards,
Shraddha Karwan
Success usually comes to those who are too busy to be looking for it.
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Re: Scheduling an application
You are going to have to programmatically load the plist. On Jun 3, 2009, at 4:52 AM, rethish wrote: hi, I want to launch my application using a time based scheduling. I have created a plist by setting the keys: Label, onDemand, ProgramArguments and startCalenderInterval. And I placed the plist in /Library/ LaunchDaemons. Then i loaded the plist manually using the terminal. It works fine on the specified time. I want the plist to be loaded automatically on the specified time and launch my application. How can be it done? Is there any thing to be set additionally? Is LaunchDaemons the correct folder to place the plist? thankyou in advance ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/tom.hohensee%40gmail.com This email sent to tom.hohen...@gmail.com ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: launchd detecting when an application is running
Thanks for the replies. I am actually quite familiar with launchd but was thinking that maybe I had missed something. I vaguely remember reading a blog where someone had used launchd to detect the app launching event but for the life of me I cannot find it. It probably had something to do with detecting file changes of the launching app. Unfortunately, the app I want to monitor is a commercial app which is not mine and I am not aware of any temp files it creates or files it alters. For the time being I have written a small background app using NSWorkspace to detect the event, but I find it a waste of resources especially since the program it starts is only used for a brief period of time. I probably will not incorporate it into the final release. Also, thanks to Kyle for pointing out the launchd IPC reading on the launchd man page. I have must have scanned that page several times but never really paid much attention to that statement. Tom On Jun 4, 2009, at 11:51 AM, Greg Guerin wrote: Tom Hohensee wrote: 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 launchd to detect an application startup. Is this for distribution, or only for your personal use? How soon after the original app launches do you need to start the secondary app? How much control do you have over the original app? Can you replace the original app's existing executable with another one that triggers your secondary app, then goes on to exec the original executable? The trigger could be many things, including something that launchd monitors (see 'man launchd.plist' for on- demand conditions). Maybe run a daemon that monitors FSEvents for creation of a temp- file you know the original app will create. Maybe on-demand monitor the original app's user-defaults, so launchd triggers that way. Those are just some random ideas. It might help if you described exactly what you're trying to accomplish, including what the original app is. Describe the problem; don't propose a solution. If you've already tried something, tell us what you've tried and exactly why it didn't work. Be specific. -- GG ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/tomhoh%40mac.com This email sent to tom...@mac.com ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: launchd detecting when an application is running
On Jun 3, 2009, at 5:23 PM, Dave Keck wrote: Sorry, that question really was bad. 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 launchd to detect an application startup. Tom Your question is unclear and doesn't make much sense. Please give lots of clarification, and consider posting your question on a list where it's more on-topic, such as darwin-dev or launchd-dev (over at macosforge). David ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
launchd detecting when an application is running
How do I configure a launchd .plist file to detect when an application running. Thanks Tom ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
