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
$116.47
Apple Inc.
+0.16
MSFT
$47.98
Microsoft Corpora
-0.72
GOOG
$537.50
Google Inc.
+2.67

MacTech Search:
Community Search:

Software Updates via MacUpdate

Cobook 3.0.7 - Intelligent address book....
Cobook Contacts is an intuitive, engaging address book. Solve the problem of contact management with Cobook Contacts and its simple interface and powerful syncing and integration possibilities.... Read more
StatsBar 1.9 - Monitor system processes...
StatsBar gives you a comprehensive and detailed analysis of the following areas of your Mac: CPU usage Memory usage Disk usage Network and bandwidth usage Battery power and health (MacBooks only)... Read more
Cyberduck 4.6 - FTP and SFTP browser. (F...
Cyberduck is a robust FTP/FTP-TLS/SFTP browser for the Mac whose lack of visual clutter and cleverly intuitive features make it easy to use. Support for external editors and system technologies such... Read more
Maya 2015 - Professional 3D modeling and...
Maya is an award-winning software and powerful, integrated 3D modeling, animation, visual effects, and rendering solution. Because Maya is based on an open architecture, all your work can be scripted... Read more
Evernote 6.0.1 - 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
calibre 2.11 - Complete e-library manage...
Calibre is a complete e-book library manager. Organize your collection, convert your books to multiple formats, and sync with all of your devices. Let Calibre be your multi-tasking digital... Read more
Herald 5.0.1 - Notification plugin for M...
Note: Versions 2.1.3 (for OS X 10.7), 3.0.6 (for OS X 10.8), and 4.0.8 (for OS X 10.9) are no longer supported by the developer. Herald is a notification plugin for Mail.app, Apple's Mac OS X email... Read more
Firetask 3.7 - Innovative task managemen...
Firetask uniquely combines the advantages of classical priority-and-due-date-based task management with GTD. Stay focused and on top of your commitments - Firetask's "Today" view shows all relevant... Read more
TechTool Pro 7.0.6 - 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
PhotoDesk 3.0.1 - Instagram client for p...
PhotoDesk lets you view, like, comment, and download Instagram pictures/videos! (NO Uploads! / Image Posting! Instagram forbids that! AND you *need* an *existing* Instagram account). But you can do... Read more

Latest Forum Discussions

See All

Ubisoft Gives Everyone Two New Ways to E...
Ubisoft Gives Everyone Two New Ways to Earn In-Game Stuff for Far Cry 4 Posted by Jessica Fisher on November 21st, 2014 [ permalink ] | Read more »
Golfinity – Tips, Tricks, Strategies, an...
Dig this: Would you like to know what we thought of being an infinite golfer? Check out our Golfinity review! Golfinity offers unlimited ways to test your skills at golf. Here are a few ways to make sure your score doesn’t get too high and your... | Read more »
Dark Hearts, The Sequel to Haunting Meli...
Dark Hearts, The Sequel to Haunting Melissa, is Available Now Posted by Jessica Fisher on November 21st, 2014 [ permalink ] Universal App - Designed for iPhone and iPad | Read more »
Meowza! Toyze Brings Talking Tom to Life...
Meowza! | Read more »
Square Enix Announces New Tactical RPG f...
Square Enix Announces New Tactical RPG for Mobile, Heavenstrike Rivals. Posted by Jessica Fisher on November 21st, 2014 [ permalink ] With their epic stories and gorgeous graphics, | Read more »
Quest for Revenge (Games)
Quest for Revenge 1.0.0 Device: iOS Universal Category: Games Price: $4.99, Version: 1.0.0 (iTunes) Description: The great Kingdom of the west has fallen. The gods ignore the prayers of the desperate. A dark warlord has extinguished... | Read more »
Threadz is a New Writing Adventure for Y...
Threadz is a New Writing Adventure for You and Your Friends Posted by Jessica Fisher on November 21st, 2014 [ permalink ] In the tradition of round-robin storytelling, | Read more »
SteelSeries Stratus XL Hardware Review
Made by: SteelSeries Price: $59.99 Hardware/iOS Integration Rating: 4 out of 5 stars Usability Rating: 4.5 out of 5 stars Reuse Value Rating: 4.25 out of 5 stars Build Quality Rating: 4.5 out of 5 stars Overall Rating: 4.31 out of 5 stars | Read more »
ACDSee (Photography)
ACDSee 1.0.0 Device: iOS iPhone Category: Photography Price: $1.99, Version: 1.0.0 (iTunes) Description: Capture, perfect, and share your photos with ACDSee. The ACDSee iPhone app combines an innovative camera, a powerful photo... | Read more »
ProTube for YouTube (Entertainment)
ProTube for YouTube 2.0.2 Device: iOS Universal Category: Entertainment Price: $1.99, Version: 2.0.2 (iTunes) Description: ProTube is the ultimate, fully featured YouTube app. With it's highly polished design, ProTube offers ad-free... | Read more »

Price Scanner via MacPrices.net

Save up to $400 with Apple refurbished 2014 1...
The Apple Store has restocked Apple Certified Refurbished 2014 15″ Retina MacBook Pros for up to $400 off the cost of new models. An Apple one-year warranty is included with each model, and shipping... Read more
New 13-inch 1.4GHz MacBook Air on sale for $8...
 Adorama has the 2014 13″ 1.4GHz/128GB MacBook Air on sale for $899.99 including free shipping plus NY & NJ tax only. Their price is $100 off MSRP. B&H Photo has the 13″ 1.4GHz/128GB MacBook... Read more
Apple Expected to Reverse Nine-Month Tablet S...
Apple and Samsung combined accounted for 62 percent of the nearly 36 million branded tablets shipped in 3Q 2014, according to early vendor shipment share estimates from market intelligence firm ABI... Read more
Stratos: 30 Percent of US Smartphone Owners t...
Stratos, Inc., creator of the Bluetooth Connected Card Platform, has announced results from its 2014 Holiday Mobile Payments Survey. The consumer survey found that nearly one out of three (30 percent... Read more
2014 1.4GHz Mac mini on sale for $449, save $...
 B&H Photo has lowered their price on the new 1.4GHz Mac mini to $449.99 including free shipping plus NY tax only. Their price is $50 off MSRP, and it’s the lowest price available for this new... Read more
Check Apple prices on any device with the iTr...
MacPrices is proud to offer readers a free iOS app (iPhones, iPads, & iPod touch) and Android app (Google Play and Amazon App Store) called iTracx, which allows you to glance at today’s lowest... Read more
64GB iPod touch on sale for $249, save $50
Best Buy has the 64GB iPod touch on sale for $249 on their online store for a limited time. Their price is $50 off MSRP. Choose free shipping or free local store pickup (if available). Sale price for... Read more
15″ 2.2GHz Retina MacBook Pro on sale for $17...
 B&H Photo has the 2014 15″ 2.2GHz Retina MacBook Pro on sale for $1799.99 for a limited time. Shipping is free, and B&H charges NY sales tax only. B&H will also include free copies of... Read more
New Logitech AnyAngle Case/Stand Brings Flexi...
Logitec has announced the newest addition to its suite of tablet products — the Logitech AnyAngle. A protective case with an any-angle stand for iPad Air 2 and all iPad mini models, AnyAngle is the... Read more
Notebook PC Shipments Rise Year-Over-Year as...
According to preliminary results from the upcoming DisplaySearch Quarterly Mobile PC Shipment and Forecast Report, the global notebook PC market grew 10 percent year-over-year in Q3’14 to 49.4... Read more

Jobs Board

*Apple* Solutions Consultant (ASC)- Retail S...
**Job Summary** The ASC is an Apple employee who serves as an Apple brand ambassador and influencer in a Reseller's store. The ASC's role is to grow Apple Read more
Project Manager, *Apple* Financial Services...
**Job Summary** Apple Financial Services (AFS) offers consumers, businesses and educational institutions ways to finance Apple purchases. We work with national and Read more
*Apple* Store Leader Program - College Gradu...
Job Description: Job Summary As an Apple Store Leader Program agent, you can continue your education as you major in the art of leadership at the Apple Store. You'll 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
Senior Event Manager, *Apple* Retail Market...
…This senior level position is responsible for leading and imagining the Apple Retail Team's global event strategy. Delivering an overarching brand story; in-store, Read more
All contents are Copyright 1984-2011 by Xplain Corporation. All rights reserved. Theme designed by Icreon.