TweetFollow Us on Twitter

A Bug's Life

Volume Number: 18 (2002)
Issue Number: 8
Column Tag: QuickTime Toolkit

A Bug's Life

Retrieving Errors in QuickTime Applications

by Tim Monroe

Introduction

Termites happen. So do errors in QuickTime-savvy applications -- often for reasons other than mere sloppy programming. Network connections can fail in the middle of downloading a movie file or other data. System resources (memory, disk space, and so forth) can get depleted while an application runs. Components necessary for the playback of some media data might not be available on a particular machine. In short, lots of unpredictable occurrences can lead to the failure of QuickTime functions. How you deal with those failures is up to you. You might throw an exception, which (hopefully) is caught by an exception handler. Or you might just return an error code to your caller and expect it to handle the error gracefully. This is all part of the theory and practice of error handling, which is often the subject of heated debates among programmers. But before you even begin to handle an error, you first need to discover that it occurred in the first place. That's the subject of this article: how to determine that a QuickTime function has failed to do what you wanted it to do.

At first glance, this might seem like a fairly trivial topic. After all, many QuickTime functions return a result code that indicates the success or failure of the operation. But in fact things are not always that simple. For starters, not all QuickTime functions return a result code directly to the caller. Many of them, particularly Movie Toolbox calls, return a result code only indirectly, and we need to do a little work to retrieve that result code. We'll begin this article by looking at how to do that. Also, it's easy to misinterpret some of these result codes, so we'll investigate some of the pitfalls lurking here. Toward the end of the article, we'll take a look at a bug in our sample applications that I inadvertently added a few months ago.

Error-Reporting Functions

A large number of QuickTime functions return a result code directly to the caller as their function result. For instance, the EnterMovies function is declared essentially like this:

OSErr EnterMovies (void);

If a call to EnterMovies fails, QuickTime tells us so by returning a non-zero result code. The main reason that EnterMovies can fail is insufficient memory available for QuickTime to do the necessary initialization, so the result code is very likely to be memFullErr. No matter what the error here, however, our sample applications all quit pretty much immediately after they get one, first informing the user of the error. Listing 1 shows a portion of our application start-up code on the Macintosh.

Listing 1: Initializing the Movie Toolbox (Macintosh)

main
myErr = EnterMovies();
if (myErr != noErr) {
   QTFrame_ShowWarning("\pCould not initialize QuickTime. 
            Exiting.", myErr);
   ExitToShell();
}

And Listing 2 shows the corresponding code in our Windows applications.

Listing 2: Initializing the Movie Toolbox (Windows)

WinMain
myErr = EnterMovies();
if (myErr != noErr) {
   MessageBox(NULL, "Could not initialize QuickTime. 
            Exiting.", gAppName, MB_OK | MB_APPLMODAL);
   return(0);
}

But a significant number of QuickTime functions do not return an error code as their function result. A good example is StartMovie, which is declared like this:

void StartMovie (Movie theMovie);

As you can see, StartMovie returns no function result at all. Some other functions do return function results but they are not of type OSErr. An example here is GetMovieActive, which returns a result of type Boolean:

Boolean GetMovieActive (Movie theMovie);

To handle cases like these, QuickTime provides a set of error-reporting functions. Let's see how these work.

Getting the Current Error

We can use the Movie Toolbox function GetMoviesError to retrieve the current error value (or current error), which is the result code of the most recently executed QuickTime function. GetMoviesError is declared like this:

OSErr GetMoviesError (void);

We can use GetMoviesError to get the result code for those functions that do not return one as their function result. (GetMoviesError also returns the result code for functions that do return an OSErr, but it's pretty much redundant in those cases.) Here's a typical use of GetMoviesError:

myTrack = NewMovieTrack(myMovie, myWidth, myHeight, 0);
myErr = GetMoviesError();
if (myErr != noErr)
   goto bail;

We could just as easily have checked to see whether myTrack is equal to NULL after the call to NewMovieTrack, but calling GetMoviesError gives us a result code that we can return to our caller, if so desired.

It's worth noting that GetMoviesError (and GetMoviesStickyError, which we'll consider in a moment) are global to an application and are not thread-specific. This means that an error that occurs in one thread can be reported to another thread. (Just something to keep in mind if you are writing multi-threaded applications.)

Getting the Sticky Error

QuickTime also maintains an error value called the sticky error value (or sticky error), which is the first non-zero result code of a Movie Toolbox function that was generated since the last time the sticky error was cleared. We retrieve the sticky error value by calling GetMoviesStickyError and we clear the sticky error by calling ClearMoviesStickyError. Here are the function prototypes:

OSErr GetMoviesStickyError (void);
void ClearMoviesStickyError (void);

When our application first starts up, the sticky error is 0. If all our Movie Toolbox function calls succeed, the sticky error remains set to 0. But as soon as any Movie Toolbox function encounters an error, the appropriate error value is copied into the sticky error value. We can call GetMoviesStickyError at any time to retrieve the sticky error value. This value does not change, even if subsequent Movie Toolbox calls fail, until we explicitly reset it to 0 by calling ClearMoviesStickyError.

The sticky error value is useful when we want to execute a series of Movie Toolbox functions but don't particularly want to check for errors after each Movie Toolbox call. Listing 3 shows a situation in which GetMoviesStickyError might be used. The function VRObject_ImportVideoTrack copies a video track from one movie (the source) into a second movie (the destination).

Listing 3: Importing a video track from one movie into another

VRObject_ImportVideoTrack
OSErr VRObject_ImportVideoTrack (Movie theSrcMovie, 
            Movie theDstMovie, Track *theImageTrack)
{
   Track         mySrcTrack = NULL;
   Media         mySrcMedia = NULL;
   Track         myDstTrack = NULL;
   Media         myDstMedia = NULL;
   Fixed         myWidth, myHeight;
   OSType         myType;
   OSErr         myErr = noErr;
   ClearMoviesStickyError();
   // get the first video track in the source movie
   mySrcTrack = GetMovieIndTrackType(theSrcMovie, 1, 
            VideoMediaType, movieTrackMediaType);
   if (mySrcTrack == NULL)
      return(paramErr);
   // get the track's media and dimensions
   mySrcMedia = GetTrackMedia(mySrcTrack);
   GetTrackDimensions(mySrcTrack, &myWidth, &myHeight);
   // create a destination track
   myDstTrack = NewMovieTrack(theDstMovie, myWidth, myHeight, 
            GetTrackVolume(mySrcTrack));
   // create a destination media
   GetMediaHandlerDescription(mySrcMedia, &myType, 0, 0);
   myDstMedia = NewTrackMedia(myDstTrack, myType, 
            GetMediaTimeScale(mySrcMedia), 0, 0);
   // copy the entire track
   InsertTrackSegment(mySrcTrack, myDstTrack, 0, 
            GetTrackDuration(mySrcTrack), 0);
   CopyTrackSettings(mySrcTrack, myDstTrack);
   SetTrackLayer(myDstTrack, GetTrackLayer(mySrcTrack));
   // an object video track should always be enabled
   SetTrackEnabled(myDstTrack, true);
   if (theImageTrack != NULL)
      *theImageTrack = myDstTrack;
   return(GetMoviesStickyError());
}

As you can see, we call ClearMoviesStickyError at the beginning of this function and then return to our caller the value returned by GetMoviesStickyError. The idea here is that our caller will care only about the first error we encounter while executing this function, which will of course be the sticky error (since we cleared the sticky error at the beginning).

Another case where we may want to access the sticky error is when we know or suspect that a QuickTime function will report an error, but we don't really care about that error. Listing 4 defines a function, QTUtils_GetFrameCount, which returns the number of frames in a specified track. We use GetTrackNextInterestingTime to step through the track's samples.

Listing 4: Counting the frames in a track

QTUtils_GetFrameCount
long QTUtils_GetFrameCount (Track theTrack)
{   
   long                  myCount = -1;
   short               myFlags;
   TimeValue         myTime = 0;
   OSErr               myErr = noErr;
   if (theTrack == NULL)
      goto bail;
   myErr = GetMoviesStickyError();
   // we want to begin with the first frame (sample) in the track
   myFlags = nextTimeMediaSample + nextTimeEdgeOK;
   while (myTime >= 0) {
      myCount++;
      // look for the next frame in the track; when there are no more frames,
      // myTime is set to -1, so we'll exit the while loop
      GetTrackNextInterestingTime(theTrack, myFlags, myTime, 
            fixed1, &myTime, NULL);
      // after the first interesting time, don't include the time we're currently at
      myFlags = nextTimeStep;
   }
   if (myErr == noErr)
      ClearMoviesStickyError();
bail:
   return(myCount);
}

GetTrackNextInterestingTime returns, in the sixth parameter, the first time value it finds that satisfies the search criteria specified in the flags parameter. When it cannot find a time value that satisfies those criteria, it sets that parameter to -1. For all we know, it's possible that GetTrackNextInterestingTime also sets an error value; if so, we want to clear that value by calling ClearMoviesStickyError (but only if the sticky error on entry to our function was noErr).

Error Notification Functions

QuickTime provides the SetMoviesErrorProc function, which we can use to install an error notification function (or, more briefly, error function). An error notification function is called whenever QuickTime encounters a non-zero result code during the execution of a Movie Toolbox function. SetMoviesErrorProc is declared like this:

void SetMoviesErrorProc (MoviesErrorUPP errProc, 
            long refcon);

The first parameter is a universal procedure pointer to our custom error notification function; the second parameter is a 4-byte reference constant that is passed to our error function when it is called. The error notification function is declared like this:

void MyMoviesErrorProc (OSErr theErr, long theRefcon);

The first parameter is the non-zero result code that was just encountered, and the second parameter is the reference constant we specified when we called SetMoviesErrorProc.

An error notification function is useful during application development or debugging, as they provide a single location where all errors are reported. This keeps us from having to put breakpoints all through our code as we track down problems.

Mysterious Errors

While we're on the topic of retrieving errors in QuickTime-savvy applications, it's worth discussing an issue that trips people up occasionally. This is the issue of mysterious QuickTime errors like -32766, which can occur when we execute some code like this:

OSErr      myErr = GraphicsExportSetDepth(myComponent, 32);

When this code is executed, then for certain graphics exporters, myErr is set to -32766. If we look in the file MacErrors.h, we won't find any such error. What's going on?

The explanation is surprisingly straightforward: GraphicsExportSetDepth and many other QuickTime functions that work with components return a function result of type ComponentResult, which is declared like this:

typedef long            ComponentResult;

On the other hand, the OSErr data type is declared like this:

typedef SInt16         OSErr;

When we try to fit a ComponentResult into an OSErr, we get only the low-order 16 bits, interpreted as a signed value. When the ComponentResult is noErr, this truncation is unproblematic. But several component errors use the full 32 bits of the long word, in which case the truncation will give us the mysterious errors described above. In particular, if a component does not support a particular action, then it will return the value badComponentSelector, which is defined as 0x80008002. Truncating 0x80008002 to a 16-bit signed quantity gives us -32766. That's what's happening with the call to GraphicsExportSetDepth we just considered: the particular component specified by the myComponent parameter does not support setting the export bit depth, in which case it returns badComponentSelector.

The lesson here is simple: pay attention to the data type of a function's return value and make sure you have enough space to hold that value. More specifically: don't use a variable of type OSErr to hold the return value of a component-related function whose return value is of type ComponentResult. But don't feel bad if you slip up occasionally. This mix-up is in fact so common that the file MacErrors.h contains some helpful comments:

/* ComponentError codes*/
enum {
   badComponentInstance   = (long)0x80008001,   /* when cast to an OSErr this is -32767*/
   badComponentSelector   = (long)0x80008002   /* when cast to an OSErr this is -32766*/
};

A Framework Bug

Let's close this article by squashing a particularly nasty bug that I introduced into our sample applications a few months back, when we updated our Macintosh code to use Carbon events instead of "classic" events. (See "Event Horizon" in MacTech, May 2002.) Recall that we added a Carbon event loop timer to each open movie window, so that we can periodically task the movie controller (by calling MCIsPlayerEvent or MCIdle). Unfortunately, our existing application can crash -- at least on Mac OS 9 -- if we do something so simple as open a movie window and then later close it. That's not good.

Fixing the Bug

The problematic code turns out to be in the Macintosh version of the QTFrame_CreateMovieWindow function, shown in Listing 5. Here we create a new window and window object. Then we attach standard and custom Carbon event handlers to the window. Finally, we call InstallEventLoopTimer to attach a timer to the window.

Listing 5: Creating a movie window

QTFrame_CreateMovieWindow
WindowReference QTFrame_CreateMovieWindow (void)
{
   WindowReference      myWindow = NULL;
   // create a new window to display the movie in
   myWindow = NewCWindow(NULL, &gWindowRect, gWindowTitle, 
            false, noGrowDocProc, (WindowPtr)-1L, true, 0);
   // create a new window object associated with the new window
   QTFrame_CreateWindowObject(myWindow);
#if USE_CARBON_EVENTS
{
   EventTypeSpec      myEventSpec[] = { 
      {kEventClassKeyboard, kEventRawKeyDown},
      {kEventClassKeyboard, kEventRawKeyRepeat},
      {kEventClassKeyboard, kEventRawKeyUp},
      {kEventClassWindow, kEventWindowUpdate},
      {kEventClassWindow, kEventWindowDrawContent},
      {kEventClassWindow, kEventWindowActivated},
      {kEventClassWindow, kEventWindowDeactivated},
      {kEventClassWindow, kEventWindowHandleContentClick},
      {kEventClassWindow, kEventWindowClose}
   };
   // install Carbon event handlers for this window
   InstallStandardEventHandler
            (GetWindowEventTarget(myWindow));
   if (gWinEventHandlerUPP != NULL)
      InstallEventHandler(GetWindowEventTarget(myWindow), 
            gWinEventHandlerUPP, GetEventTypeCount(myEventSpec), 
            myEventSpec, 
            QTFrame_GetWindowObjectFromWindow(myWindow), NULL);
}
   if (gWinTimerHandlerUPP != NULL)
      InstallEventLoopTimer(GetMainEventLoop(), 0, 
                     TicksToEventTime(kWNEMinimumSleep), 
                     gWinTimerHandlerUPP, myWindowObject, 
                     &(**myWindowObject).fTimerRef);
#endif
   return(myWindow);
}

It turns out that InstallEventLoopTimer can move memory, which might invalidate its last parameter, &(**myWindowObject).fTimerRef. If the window object indeed moves, then InstallEventLoopTimer will write the timer reference into the previous location of the window object. That's bad enough, but it gets worse when you realize that the window object, in its new memory location, now won't contain the timer reference returned by InstallEventLoopTimer. Rather, (**myWindowObject).fTimerRef will still be NULL. The event loop timer indeed gets installed, but we don't have a reference to it.

This in itself isn't a problem until we try to remove the event loop timer when the window is closed. Here's the code we use to do that:

if ((**myWindowObject).fTimerRef != NULL)
   RemoveEventLoopTimer((**myWindowObject).fTimerRef);

Since (**myWindowObject).fTimerRef is indeed NULL, RemoveEventLoopTimer isn't called and the timer continues firing even after the movie window has disappeared. Listing 6 shows our event loop timer callback function.

Listing 6: Handling event loop timer callbacks

QTFrame_CarbonEventWindowTimer
PASCAL_RTN void QTFrame_CarbonEventWindowTimer
            (EventLoopTimerRef theTimer, void *theRefCon)
{
#pragma unused(theTimer)
   WindowObject   myWindowObject = (WindowObject)theRefCon;
   // just pretend a null event has been received....
   if ((myWindowObject != NULL) && 
                        ((**myWindowObject).fController != NULL))
      if (!gMenuIsTracking || gRunningUnderX)
         MCIdle((**myWindowObject).fController);
}

If the window object has been disposed of, then reading any of its fields (in this case, fController) will likely result in a segmentation fault or other error.

This is a classic case of using a dangling pointer, the address of a block of memory whose contents have moved. You can get the full details on this type of problem in the book Inside Macintosh: Memory (which I am presently chagrined to admit I myself wrote a decade ago). There are several solutions to this type of problem. A standard solution is to lock the window object before calling InstallEventLoopTimer and then unlock it afterwards:

HLock((Handle)myWindowObject);
if (gWinTimerHandlerUPP != NULL)
   InstallEventLoopTimer(GetMainEventLoop(), 0, 
                     TicksToEventTime(kWNEMinimumSleep), 
                     gWinTimerHandlerUPP, myWindowObject, 
                     &(**myWindowObject).fTimerRef);
HUnlock((Handle)myWindowObject);

Or, even more simply, we can just use a temporary variable to hold the timer reference:

EventLoopTimerRef         myTimerRef;
if (gWinTimerHandlerUPP != NULL)
   InstallEventLoopTimer(GetMainEventLoop(), 0, 
                     TicksToEventTime(kWNEMinimumSleep), 
                     gWinTimerHandlerUPP, myWindowObject, 
                     &myTimerRef);
(**myWindowObject).fTimerRef = myTimerRef;

Adding Some More Protections

Let's take this opportunity to tinker with the Carbon event loop timer callback function QTFrame_CarbonEventWindowTimer (Listing 6, above). First of all, we should add a check at the top of the function to make sure we got a non-NULL window object:

if (myWindowObject == NULL)
   return;

And we should make sure that we are passed the same timer reference we are storing in the window object:

if ((**myWindowObject).fTimerRef != theTimer)
   return;

More importantly, I want to change the call to MCIdle into a call to MCIsPlayerEvent. We can achieve this end by building a null event and passing it to our framework function QTFrame_HandleEvent, as shown in Listing 7.

Listing 7: Handling event loop timer callbacks (revised)

QTFrame_CarbonEventWindowTimer
PASCAL_RTN void QTFrame_CarbonEventWindowTimer
            (EventLoopTimerRef theTimer, void *theRefCon)
{
   WindowObject   myWindowObject = (WindowObject)theRefCon;
   if (myWindowObject == NULL)
      return;
   // sanity check: make sure it's our timer
   if ((**myWindowObject).fTimerRef != theTimer)
      return;
   // just issue a null event to our event-handling routine....
   if (!gMenuIsTracking || gRunningUnderX) {
      EventRecord   myEvent;
      myEvent.what = nullEvent;
      myEvent.message = 0;
      myEvent.modifiers = 0;
      myEvent.when = EventTimeToTicks(GetCurrentEventTime());
      QTFrame_HandleEvent(&myEvent);
   }
}

I prefer this revised approach to tasking our movie controllers because it routes null events through our existing event-handling routine QTFrame_HandleEvent. This in turn will make it easier to modify our code to handle movies that need to be tasked but which don't yet have a movie controller attached to them. In the next article, we'll see how this can happen.

Conclusion

Of the four new QuickTime functions we've encountered in this article (GetMoviesError, GetMoviesStickyError, ClearMoviesStickyError, and SetMoviesErrorProc), we're most likely to want to use GetMoviesError in our daily programming, as it provides our only means of retrieving the result codes for a large number of QuickTime functions. I generally find the sticky error less useful, but there are times we might want to take a look at it. The error procedure is, to my knowledge, largely unused. I can, however, imagine that a clever programmer could find some useful applications for it, so it's good to at least know it exists.


Tim Monroe in a member of the QuickTime engineering team. You can contact him at monroe@apple.com. The views expressed here are not necessarily shared by his employer.

 
AAPL
$102.05
Apple Inc.
+0.99
MSFT
$46.78
Microsoft Corpora
-0.28
GOOG
$585.83
Google Inc.
-1.55

MacTech Search:
Community Search:

Software Updates via MacUpdate

ScreenFlow 4.5.3 - Create screen recordi...
Save 5% with the MacUpdate coupon code: 68031AE15F -- Buy now! ScreenFlow is powerful, easy-to-use screencasting software for the Mac. With ScreenFlow you can record the contents of your entire... Read more
NeoOffice 2014.3 - Mac-tailored, OpenOff...
NeoOffice is a complete office suite for OS X. With NeoOffice, users can view, edit, and save OpenOffice documents, PDF files, and most Microsoft Word, Excel, and PowerPoint documents. NeoOffice 3.x... Read more
Typinator 6.2 - Speedy and reliable text...
Typinator turbo-charges your typing productivity. Type a little. Typinator does the rest. We've all faced projects that require repetitive typing tasks. With Typinator, you can store commonly used... Read more
PopChar X 6.7 - Floating window shows av...
PopChar X helps you get the most out of your font collection. With its crystal-clear interface, PopChar X provides a frustration-free way to access any font's special characters. Expanded... Read more
Evernote 5.6.0 - Create searchable notes...
Evernote allows you to easily capture information in any environment using whatever device or platform you find most convenient, and makes this information accessible and searchable at anytime, from... Read more
Monosnap 2.2.2 - Versatile screenshot ut...
Monosnap allows you to save screenshots easily, conveniently, and quickly, sharing them with friends and colleagues at once. It's the ideal choice for anyone who is looking for a smart and fast... Read more
Tunnelblick 3.4beta36 - GUI for OpenVPN...
Tunnelblick is a free, open source graphic user interface for OpenVPN on OS X. It provides easy control of OpenVPN client and/or server connections. It comes as a ready-to-use application with all... Read more
SoftRAID 5.0.4 - High-quality RAID manag...
SoftRAID allows you to create and manage disk arrays to increase performance and reliability. SoftRAID's intuitive interface and powerful feature set makes this utility a must have for any Mac OS X... Read more
Audio Hijack Pro 2.11.3 - Record and enh...
Audio Hijack Pro drastically changes the way you use audio on your computer, giving you the freedom to listen to audio when you want and how you want. Record and enhance any audio with Audio Hijack... Read more
Airfoil 4.8.9 - Send audio from any app...
Airfoil allows you to send any audio to AirPort Express units, Apple TVs, and even other Macs and PCs, all in sync! It's your audio - everywhere. With Airfoil you can take audio from any... Read more

Latest Forum Discussions

See All

Astropolo Review
Astropolo Review By Amy Solomon on September 23rd, 2014 Our Rating: Universal App - Designed for iPhone and iPad Astropolo is a space-themed children’s app with a great sense of style.   | Read more »
New E*TRADE Update Includes Touch ID and...
New E*TRADE Update Includes Touch ID and Home Screen Widget for iOS 8 Posted by Jessica Fisher on September 23rd, 2014 [ permalink ] | Read more »
Cupcake Carnival Review
Cupcake Carnival Review By Jennifer Allen on September 23rd, 2014 Our Rating: :: SAME OLDUniversal App - Designed for iPhone and iPad Cupcake Carnival does all the right match-3 things but it’s a format we’ve seen a little too... | Read more »
This Week at 148Apps: September 15-19, 2...
Expert App Reviewers   So little time and so very many apps. What’s a poor iPhone/iPad lover to do? Fortunately, 148Apps is here to give you the rundown on the latest and greatest releases. And we even have a tremendous back catalog of reviews; just... | Read more »
Kitty Powers’ Matchmaker – Tips, Tricks,...
Hey There, Kittens: | Read more »
Goblin Sword Review
Goblin Sword Review By Andrew Fisher on September 22nd, 2014 Our Rating: :: RETRO GOODNESSUniversal App - Designed for iPhone and iPad Fun visuals, good music, engaging level design, and lots of content make Goblin Sword an... | Read more »
Major New Update for CSR Racing Adds Fer...
Major New Update for CSR Racing Adds Ferrari and Multiplaye​r Posted by Jessica Fisher on September 22nd, 2014 [ permalink ] | Read more »
Veditor Review
Veditor Review By Jennifer Allen on September 22nd, 2014 Our Rating: :: PIMP YOUR VIDEOUniversal App - Designed for iPhone and iPad Want to add stickers and music to your videos? Veditor can do that easily.   | Read more »
1849′s Nevada Silver DLC is Still Search...
A few months ago, I took a look at 1849 from SomaSim. This Gold Rush-themed city builder for iPad had a fair bit going for it, but lacked in a few crucial areas to make it a true stand-out on the App Store. SomaSim has since added in a sandbox mode... | Read more »
Fruit Ninja Will be Reborn With a Massiv...
Fruit Ninja Will be Reborn With a Massive Update and Origins Animation Series Posted by Jessica Fisher on September 22nd, 2014 [ permalink ] Halfbrick Studios is rebuilding | Read more »

Price Scanner via MacPrices.net

Refurbished 2013 MacBook Pros available for u...
The Apple Store has Apple Certified Refurbished 13″ and 15″ MacBook Pros available starting at $929. Apple’s one-year warranty is standard, and shipping is free: - 13″ 2.5GHz MacBook Pros (4GB RAM/... Read more
New iPhones Score Big in SquareTrade Breakabi...
SquareTrade has announced the iPhone 6 and its larger sibling, iPhone 6 Plus, performed impressively in Breakability testing, and each carries the top Breakability Score in their respective category... Read more
10 Million + First Weekend Sales Set New iPho...
Apple has announced it sold over 10 million new iPhone 6 and iPhone 6 Plus models, a new record, just three days after the launch on September 19. iPhone 6 and iPhone 6 Plus are now available in the... Read more
Betty Crocker Launches New Cookbook for iOS
Betty Crocker, a General Mills brand, an established food industry leader, has announced its free digital cookbook app has been refreshed to make cooking with iPhone, iPad and iPod touch even easier... Read more
Apple restocks some refurbished 2014 MacBook...
The Apple Store has restocked some Apple Certified Refurbished 2014 MacBook Airs, with prices starting at $769. An Apple one-year warranty is included with each MacBook, and shipping is free. These... Read more
13-inch 128GB MacBook Air on sale for $949, s...
B&H Photo has the new 2014 13″ 1.4GHz/128GB MacBook Air on sale for $949.99 including free shipping plus NY tax only. Their price is $50 off MSRP. B&H will also include free copies of... Read more
Apple offering free $25 iTunes Gift Card with...
The Apple Store is offering a free $25 iTunes Gift Card with the purchase of a $99 Apple TV for a limited time. Shipping is free. Read more
Apple refurbished iPod touch available for up...
The Apple Store has Apple Certified Refurbished 5th generation iPod touches available starting at $149. Apple’s one-year warranty is included with each model, and shipping is free. Most colors are... Read more
iFixIt Tears Down iPhone 6; Awards Respectabl...
iFixit notes that even the smaller 4.7″ iPhone 6 is a giant among iPhones; so big that Apple couldn’t fit it into the familiar iPhone form factor. In a welcome reversal of a recent trend to more or... Read more
Phone 6 Guide – Tips Book For Both iPhone 6...
iOS Guides has announced its latest eBook: iPhone 6 Guide. Brought to you by the expert team at iOS Guides, and written by best-selling technology author Tom Rudderham, iPhone 6 Guide is packed with... Read more

Jobs Board

Project Manager / Business Analyst, WW *Appl...
…a senior project manager / business analyst to work within our Worldwide Apple Fulfillment Operations and the Business Process Re-engineering team. This role will work Read more
*Apple* Retail - Multiple Positions (US) - A...
Job Description: Sales Specialist - Retail Customer Service and Sales Transform Apple Store visitors into loyal Apple customers. When customers enter the store, Read more
Position Opening at *Apple* - Apple (United...
…customers purchase our products, you're the one who helps them get more out of their new Apple technology. Your day in the Apple Store is filled with a range of Read more
*Apple* Retail - Multiple Positions (US) - A...
Sales Specialist - Retail Customer Service and Sales Transform Apple Store visitors into loyal Apple customers. When customers enter the store, you're also the Read more
Position Opening at *Apple* - Apple (United...
**Job Summary** At the Apple Store, you connect business professionals and entrepreneurs with the tools they need in order to put Apple solutions to work in their Read more
All contents are Copyright 1984-2011 by Xplain Corporation. All rights reserved. Theme designed by Icreon.