TweetFollow Us on Twitter

Dec 97 - Macintosh Q and A

Volume Number: 13 (1997)
Issue Number: 12
Column Tag: develop

Macintosh Q & A

by Apple Developer Support Center

White Backgrounds for Dialog editText Items

Q. I would like to have a colored background for my dialog box but I would like the TextEdit fields in my dialog box to be white. Is this possible to do? Is there some sample code available?

A. Generally speaking, this coloring is achieved via resources, not code. In addition to the dctb' resource, you need to create an 'ictb' resource.

To download a sample of an application using this kind of resource go to http://devworld.apple.com/dev/qa/tb/tb3.html.

The 'ictb' resource is documented on page 6-76 and starting again on page 6-158 of Inside Macintosh: Macintosh Toolbox Essentials. The best way I know of to create and edit 'ictb' resources is with Resorcerer, but you can also create them with a '.r' file compiled by either MPW's Rez or the Metrowerks CodeWarrior equivalent.

Here are some references to web sites for the aforementioned tools:

Resorcerer:
http://www.mathemaesthetics.com/
ETO (incl. Rez):
http://www.devtools.apple.com/eto/
CodeWarrior:
http://www.metrowerks.com/

If this response has failed to adequately address a question or has raised more questions than it answered, please feel free to let us know and we'll try again.

Pete Gontier


OTScheduleDeferredTask When Task Running

Q. What happens when you use OTScheduleDeferredTask to schedule a task that is running?

A. The "Open Transport Client Note" mentions that OTScheduleDeferredTask returns false when you attempt to schedule a task that is already scheduled, but it doesn't say anything about what happens if the task is running. It turns out that a task that is running is not consider to be scheduled, so OTScheduleDeferredTask will successfully reschedule it.

Quinn "The Eskimo!"


Gestalt Values for Recent Macintosh Models

Q. What are the 'mach' gestalt values for the recent Macintosh models?

A. Recently, we announced the following new Macintosh models:

PowerBook 2400

The following list includes the 'mach' gestalt selectors for these and other Macintosh systems which are not included in the Gestalt.h header file which is part of the "Universal Interfaces 2.1 in MPW Latest" on ETO #22.

  • gestaltPerforma5300 = 41; { Macintosh Performa 53xx }
  • gestaltPowerMac5260 = 41; { Power Macintosh 5260/100 }
  • gestaltPerforma6300 = 42; { Macintosh Performa 63xx, except 6360 }
  • gestaltPerforma6360 = 58; { Performa 6360 }
  • gestaltPerforma6400 = 58; { Performa 6400 }
  • gestaltPowerMac9600 = 67; { Power Macintosh 9600
  • gestaltPowerMac7600 = 68; { Power Macintosh 7600 }
  • gestaltPowerMac8600 = 69; { Power Macintosh 8600 }
  • gestaltPowerMac5400 = 74; { Power Macintosh 5400/120}
  • gestaltMacLC580 = 99; { Macintosh LC 580 }
  • gestaltPerforma580 = 99; { Macintosh Performa 580 }
  • gestaltPowerMacLC475 = 104; { Mac LC 475 & PPC Processor Upgrade Card }
  • gestaltPowerMacPerforma47x = 104; { Performa 47x & PPC Proc Upgrade Card }
  • gestaltPowerMacLC575 = 105; { Mac LC 575 & PPC Processor Upgrade Card }
  • gestaltPowerMacPerforma57x = 105; { Performa 57x & PPC Proc Upgrade Card }
  • gestaltPowerMacQuadra630 = 106; { Quadra 630 & PPC Processor Upgrade Card }
  • gestaltPowerMacLC630 = 106; { Mac LC 630 & PPC Processor Upgrade Card }
  • gestaltPowerMac7300 = 109; { Power Macintosh 7300 }
  • gestaltPowerMacQuadra700 = 116; { Quadra 700 & Power PC Upgrade Card }
  • gestaltPowerMacQuadra900 = 117; { Quadra 900 & Power PC Upgrade Card }
  • gestaltPowerMacQuadra950 = 118; { Quadra 950 & Power PC Upgrade Card }
  • gestaltPowerMacCentris610 = 119; { Centris 610 & Power PC Upgrade Card }
  • gestaltPowerMacCentris650 = 120; { Centris 650 & Power PC Upgrade Card }
  • gestaltPowerMacQuadra610 = 121; { Quadra 610 & Power PC Upgrade Card }
  • gestaltPowerMacQuadra650 = 122; { Quadra 650 & Power PC Upgrade Card }
  • gestaltPowerMacQuadra800 = 123; { Quadra 800 & Power PC Upgrade Card }
  • gestaltPowerBook3400 = 306; { Macintosh PowerBook 3400 }
  • gestaltPowerBook2400 = 307; { Macintosh PowerBook 2400 }
  • gestaltPowerBook1400 = 310; { Macintosh PowerBook 1400 }
  • gestaltPowerMac5500 = 512; { Power Macintosh 5500 }
  • gestalt20thAnnivMac = 512; { Twentieth Anniversary Macintosh }
  • gestaltPowerMac5500 = 512; { Power Macintosh 5500 }
  • gestaltPowerMac6500 = 513; { Power Macintosh 6500 }
  • gestaltPowerMac4400 = 515; { Power Macintosh 4400 }

Note: To distinguish the Twentieth Anniversary Macintosh from the Power Macintosh 5500, make a secondary Gestalt selector call to the selector 'bxid'. The response for a Twentieth Anniversary Macintosh will be 0x0000302B

Rich Kubota


Find Desktop Folder

Q. The General control panel (GCP) in 7.6, 7.6.1 and 8.0 has the document options: Last folder, Application set folder, and Documents folder. How can my application determine where this folder is?

A. The General control panel (GCP) patches FindFolder so it will return the correct document folder given the current GCP options. Pass FindFolder a folderType of 'docs'. One quick note: Because the GCP patches FindFolder, the createFolder option doesn't work. If the folder doesn't exist you won't get an error and it won't be created. You have to write code to determine if the folder actually exist: if it doesn't, you'll have to create it yourself.

George Warner


MemError

Q. When I am debugging my application MemError() always returns noErr. What's wrong with MemError()?

A. Nothing, if you are debugging your application with a high level debugger. High level debuggers often call Memory Manager routines while stepping through your code. When a Memory Manager routine is called, it sets MemError() and in this case, the debugger's memory request was successful (it returned noErr) and cleared your application's MemError() result.

The solution to this problem is often just to not step over Memory Manager calls and the call to MemError(). If you put a break point just after the MemError() call, you usually get the correct error -- the one your application would see if it wasn't running in the debugger.

The other option is to use a low level debugger such as MacsBug to debug your memory allocation problems.

As a general rule your application should check the value of the handle or pointer returned by NewHandle, NewPtr, etc: and if it is nil, you should call MemError() for an error number. Just calling MemError() without checking the value of the handle/pointer is not a good idea.

Mark Cookson

 
AAPL
$99.76
Apple Inc.
+2.09
MSFT
$44.08
Microsoft Corpora
+0.45
GOOG
$520.84
Google Inc.
+9.67

MacTech Search:
Community Search:

Software Updates via MacUpdate

Apple iOS 8.1 - The latest version of Ap...
The latest version of iOS can be downloaded through iTunes. Apple iOS 8 comes with big updates to apps you use every day, like Messages and Photos. A whole new way to share content with your family.... Read more
TechTool Pro 7.0.5 - Hard drive and syst...
TechTool Pro is now 7, and this is the most advanced version of the acclaimed Macintosh troubleshooting utility created in its 20-year history. Micromat has redeveloped TechTool Pro 7 to be fully 64... Read more
PDFKey Pro 4.0.2 - Edit and print passwo...
PDFKey Pro can unlock PDF documents protected for printing and copying when you've forgotten your password. It can now also protect your PDF files with a password to prevent unauthorized access and/... Read more
Yasu 2.9.1 - System maintenance app; per...
Yasu was originally created with System Administrators who service large groups of workstations in mind, Yasu (Yet Another System Utility) was made to do a specific group of maintenance tasks... Read more
Hazel 3.3 - Create rules for organizing...
Hazel is your personal housekeeper, organizing and cleaning folders based on rules you define. Hazel can also manage your trash and uninstall your applications. Organize your files using a... Read more
Autopano Giga 3.7 - Stitch multiple imag...
Autopano Giga allows you to stitch 2, 20, or 2,000 images. Version 3.0 integrates impressive new features that will definitely make you adopt Autopano Pro or Autopano Giga: Choose between 9... Read more
MenuMeters 1.8 - CPU, memory, disk, and...
MenuMeters is a set of CPU, memory, disk, and network monitoring tools for Mac OS X. Although there are numerous other programs which do the same thing, none had quite the feature set I was looking... Read more
Coda 2.5 - One-window Web development su...
Coda is a powerful Web editor that puts everything in one place. An editor. Terminal. CSS. Files. With Coda 2, we went beyond expectations. With loads of new, much-requested features, a few... Read more
Arq 4.6.1 - Online backup to Google Driv...
Arq is super-easy online backup for the Mac. Back up to your own Google Drive storage (15GB free storage), your own Amazon Glacier ($.01/GB per month storage) or S3, or any SFTP server. Arq backs up... Read more
Airfoil 4.8.10 - 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

This Week at 148Apps: October 13-17, 201...
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 »
Angry Birds Transformers Review
Angry Birds Transformers Review By Jennifer Allen on October 20th, 2014 Our Rating: :: TRANSFORMED BIRDSUniversal App - Designed for iPhone and iPad Transformed in a way you wouldn’t expect, Angry Birds Transformers is a quite... | Read more »
GAMEVIL Announces the Upcoming Launch of...
GAMEVIL Announces the Upcoming Launch of Mark of the Dragon Posted by Jessica Fisher on October 20th, 2014 [ permalink ] Mark of the Dragon, by GAMEVIL, put | Read more »
Interview With the Angry Birds Transform...
Angry Birds Transformers recently transformed and rolled out worldwide. This run-and-gun title is a hit with young Transformers fans, but the ample references to classic Transformers fandom has also earned it a place in the hearts of long-time... | Read more »
Find Free Food on Campus with Ypay
Find Free Food on Campus with Ypay Posted by Jessica Fisher on October 20th, 2014 [ permalink ] iPhone App - Designed for the iPhone, compatible with the iPad | Read more »
Strung Along Review
Strung Along Review By Jordan Minor on October 20th, 2014 Our Rating: :: GOT NO STRINGSUniversal App - Designed for iPhone and iPad A cool gimmick and a great art style keep Strung Along from completely falling apart.   | Read more »
P2P file transferring app Send Anywhere...
File sharing services like Dropbox have security issues. Email attachments can be problematic when it comes to sharing large files. USB dongles don’t fit into your phone. Send Anywhere, a peer-to-peer file transferring application, solves all of... | Read more »
Zero Age Review
Zero Age Review By Jordan Minor on October 20th, 2014 Our Rating: :: MORE THAN ZEROiPad Only App - Designed for the iPad With its mind-bending puzzles and spellbinding visuals, Zero Age has it all.   | Read more »
Hay Ewe Review
Hay Ewe Review By Campbell Bird on October 20th, 2014 Our Rating: :: SAVE YOUR SHEEPLEUniversal App - Designed for iPhone and iPad Pave the way for your flock in this line drawing puzzle game from the creators of Worms.   | Read more »
My Very Hungry Caterpillar (Education)
My Very Hungry Caterpillar 1.0.0 Device: iOS Universal Category: Education Price: $3.99, Version: 1.0.0 (iTunes) Description: Care for your very own Very Hungry Caterpillar! My Very Hungry Caterpillar will captivate you as he crawls... | Read more »

Price Scanner via MacPrices.net

2013 15-inch 2.0GHz Retina MacBook Pro availa...
B&H Photo has leftover previous-generation 15″ 2.0GHz Retina MacBook Pros now available for $1599 including free shipping plus NY sales tax only. Their price is $400 off original MSRP. B&H... Read more
Updated iPad Prices
We’ve updated our iPad Air Price Tracker and our iPad mini Price Tracker with the latest information on prices and availability from Apple and other resellers, including the new iPad Air 2 and the... Read more
Apple Pay Available to Millions of Visa Cardh...
Visa Inc. brings secure, convenient payments to iPad Air 2 and iPad mini 3as well as iPhone 6 and 6 Plus. Starting October 20th, eligible Visa cardholders in the U.S. will be able to use Apple Pay,... Read more
Textkraft Pocket – the missing TextEdit for i...
infovole GmbH has announced the release and immediate availability of Textkraft Pocket 1.0, a professional text editor and note taking app for Apple’s iPhone. In March 2014 rumors were all about... Read more
C Spire to offer iPad Air 2 and iPad mini 3,...
C Spire on Friday announced that it will offer iPad Air 2 and iPad mini 3, both with Wi-Fi + Cellular, on its 4G+ LTE network in the coming weeks. C Spire will offer the new iPads with a range of... Read more
Belkin Announces Full Line of Keyboards and C...
Belkin International has unveiled a new lineup of keyboard cases and accessories for Apple’s newest iPads, featuring three QODE keyboards and a collection of thin, lightweight folios for both the... Read more
Verizon offers new iPad Air 2 preorders for $...
Verizon Wireless is accepting preorders for the new iPad Air 2, cellular models, for $100 off MSRP with a 2-year service agreement: - 16GB iPad Air 2 WiFi + Cellular: $529.99 - 64GB iPad Air 2 WiFi... Read more
Price drops on refurbished Mac minis, now ava...
The Apple Store has dropped prices on Apple Certified Refurbished previous-generation Mac minis, with models now available starting at $419. Apple’s one-year warranty is included with each mini, and... Read more
Apple refurbished 2014 MacBook Airs available...
The Apple Store has Apple Certified Refurbished 2014 MacBook Airs available for up to $180 off the cost of new models. An Apple one-year warranty is included with each MacBook, and shipping is free.... Read more
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

Jobs Board

*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
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
Position Opening at *Apple* - Apple (United...
**Job Summary** The Apple Store is a retail environment like no other - uniquely focused on delivering amazing customer experiences. As an Expert, you introduce people Read more
Position Opening at *Apple* - Apple (United...
**Job Summary** As businesses discover the power of Apple computers and mobile devices, it's your job - as a Solutions Engineer - to show them how to introduce these Read more
All contents are Copyright 1984-2011 by Xplain Corporation. All rights reserved. Theme designed by Icreon.