TweetFollow Us on Twitter

Winter 91 - Letters

LETTERS

Thanks for the excellent article in the October 1990 issue of develop dealing with polymorphism in C++ stand-alone code resources. I have one question about the code that accompanied it on the disc; it concerns the file WindowDef_main.cp: why are the overloaded "new" and "delete" operator definitions bracketed by the #ifdef NEEDED and #endif statements? Is NEEDED defined somewhere else? (I couldn't find it in any of the other files on the CD.) Are there circumstances in which you wouldn't want to overload the storage operators for a window definition function? I'm confused.
--Carlos Weber, M.D.

Yahoo, a technical buck to stop! Lemme at it!

The code in question (#ifdef NEEDED... #endif) shouldn't be there at all, and as a matter of fact is ignored by the compiler, since NEEDED isn't defined. It is left over from when Patrick was developing the code and still experimenting.

In the final version he is basing his WindowDefinition class on the Relocatable class, which is in turn based on HandleObject, an Apple® extension to C++ which uses handles instead of pointers when allocating space for new objects. No overloading of the storage operators is necessary.

Sorry about the confusion. I should have spotted that code and yanked it out before we published.
--Dave Johnson

In develop, Issue 4, you advocate installing DRVR resources at startup time by changing their resource ID to an empty slot in the Unit Table and then calling OpenDriver rather than use _DrvrInstall due to its bug.

The problem with this method is that it actually modifies the DRVR resource, which has two consequences: 1. According to Apple you are not supposed to modify yourself; and 2. it sets the last date modified field on the file. This latter problem causes backup programs to think the file has really changed and it worries users that perhaps some virus has modified that file when they know they didn't.

Thus, in my opinion, it is much better to use _DrvrInstall and, until Apple fixes the bug, stuff the DCE yourself. This method does not suffer the side effects of the OpenDriver method.
--Jeff Shulman

You're right, it's easier to use the method outlined in my article, but it's "better"to use _DrvrInstall and manually put the pointer to the driver into the appropriate field in the DCE.
--Tim Enwall

I have a question about the article on the 8*24 GC card in develop, Issue 3, which, incidentally, was excellent. On pages 338 and 339 you mention the files that must be present to use the card. Is the GC file a transparent patching upgrade or is it a supplemental code block that duplicates all of the 32-Bit QD file functionality?

Good luck with Dogcow breeding,
--David

The 8*24 GC file contains more (and less) than just the 29000 equivalent of 32-Bit QuickDraw TM; it also contains the IPC software that steals QD calls and transfers them to the card, the shell (GC OS) that receives the commands and dispatches them as well as doing the Memory Management chores and such, and finally the 'drawing' parts of 32 QD. Note that calls that do not cause any drawing to take place, such as NewGWorld, are not part of GC QD but are executed by the main processor even when acceleration is on.

All these functions are not part of 32 QD and therefore make it necessary to have the 8*24 GC file present when you want to have acceleration. So when running 6.0.x you need both files, 32 QuickDraw and 8*24 GC; under 7.0 you will need to have the 8*24 GC file present.
--Guillermo Ortiz

Have you guys considered adding perfume to the CD envelope, to try to raise a little capital from advertising to offset your costs? "C perfume, for the programmer in every man," "L'Air du Comp, as fresh as a new CPU."
--Jason Rusoff

My copy of develop arrived in my P.O. box this morning and therein lies the problem. In its original shape develop will not fit into my P.O. box so its shape was altered to make it fit. The CD is warped, and try as it might, the Finder TM cannot make the "minor repairs" it says are needed. Unfortunately, we out here on the frontier don't have someone to bring our mail to us each day; we have to go fetch it--and pay for the privilege. So I'm stuck with the U.S. Postal Service and an unusable CD.

Perhaps a large "DO NOT BEND" on the outside of subsequent issues will avert deformation. Then again, maybe not. Would you kindly use your considerable influence to get me a flat CD?

And if the printed warning doesn't work, how about a steel plate in each issue? Make that a really stiff steel plate. You know how those Postal Service people are--neither rain nor snow nor CD. . .
--Warren Michelsen

Sorry about that mangled CD--pushing the limits on information distribution sometimes we run into hassles like how to actually get the information into the hands (and drives) of the folks that need it. Hopefully our "DO NOT BEND" notice will help because I'd sure hate to have to resort to a steel plate.

f in fact, the warning doesn't help, you can contact the fulfillment house (see the subscription order form at the back of the issue for contact information) and tell them that your CD was mauled; they'll be happy to send you a new copy.
--Louella

In response to recent concern regarding the ecological soundness of your page layout, I have the following comments:

CD-ROM and electronic magazines are examples of technologies that--provided they are adopted-- are ecologically superior to more traditional media, such as paper.

develop is encouraging the adoption of these new media, and thus can easily defend its spacious page layout. It is one of the few publications that can have a positive environmental impact--provided that developers absorb and act upon its contents.

Incorporating these new technologies into useful products is the first step toward their eventual widespread adoption. By keepingdevelopeasy-to-read, you are encouraging this trend.

P.S. Providing an e-mail address for comments would also decrease paper usage!
--Bryn Dyment

Thanks for your words of encouragement. Pushing CD distribution is one way we're trying to get away from killing forests; using recycled paper is another. Our production manager, Hartley Lesser, found a paper that meets our quality standards, that doesn't use toxic chemicals for de-inking, and that's available in the quantities we require. This issue is the first one printed on the new paper--let us know what you think.

Also, we are now even more available electronically (although Dave's much more connected than I am), so if you'd rather send e-mail, feel free to use the addresses we provide.
--Louella

May it be known by you and your wonderfully talented crew how very much I appreciate your efforts on behalf of creating the wonderful, informative, interesting, entertaining, and otherwise "slick" magazine, develop. The opportunity to see what others are doing, who those others are, and perhaps to learn more than you would from MacWeek , but less than from Inside Macintosh, is indeed welcome. Add to this the fact that you include a CD-ROM and I am hard-pressed to even IMAGINE a more valuable offering. Great job. Thanks a zillion!!
--Lance Drake

I noticed that Apple is looking for a new editor-in-chief for the major publications. You're not going anywhere, are you?
--A concerned reader

First of all, believe it or not, I did not make up this letter (or even the signature). Our group (Developer Technical Communications) recently reorganized and now my grouplet is responsible for not only develop, but also technical updates (like the Q & A stack), Technical Notes, Sample Code, and reporting compatibility bugs to developers. Since I need to spend my time doing the things that managers do, I'm looking for someone to do all the real work. If this sounds fun and you think you'd be qualified, let me know.
--Louella


COMMENTS We welcome timely letters to the editors, especially from readers wishing to react to articles that we publish in develop. Letters should be addressed to Dave Johnson or Louella Pizzuti at Apple Computer, Inc., Developer Programs, 20525 Mariani Ave., M/S 75-3B, Cupertino, CA 95014 (AppleLink: Johnson.DK or Pizzuti1).

All letters should include name and company name as well as address and phone number. Letters may be excerpted or edited for clarity (or to make them look like they say what we wish they did).*

 
AAPL
$99.18
Apple Inc.
-1.57
MSFT
$45.90
Microsoft Corpora
-0.46
GOOG
$568.27
Google Inc.
-9.09

MacTech Search:
Community Search:

Software Updates via MacUpdate

Cocktail 8.0 Beta 2 - General maintenanc...
Cocktail is a general purpose utility for OS X that lets you clean, repair and optimize your Mac. It is a powerful digital toolset that helps hundreds of thousands of Mac users around the world get... Read more
QuickBooks 2015 16.0.0.1352 R1 - Financi...
QuickBooks 2015 helps you manage your business easily and efficiently. Organize your finances all in one place, track money going in and out of your business, and spot areas where you can save.... Read more
Mac DVDRipper Pro 5.0.1 - Copy, backup,...
Mac DVDRipper Pro is the DVD backup solution that lets you protect your DVDs from scratches, save your batteries by reading your movies from your hard disk, manage your collection with just a few... Read more
Apple OS X bash Update 1.0 - Fix for sec...
The OS X bash Update fixes a security flaw in the bash UNIX shell on OS X 10.9.5 (also on OS X 10.8 and 10.7 [see Related Links below]). OS X 10.9.5 or later Downloads for OS X 10.8 and OS X 10.7 in... Read more
SyncTwoFolders 2.0.5 - Syncs two user-sp...
SyncTwoFolders simply synchronizes two folders. It supports synchronization across mounted network drives and it is a possibility to run a simulation showing in a log what will be done. Please visit... Read more
FinderPop 2.5.7 - Classic Mac utility, n...
FinderPop is a Universal preference pane that extends OS X's contextual menus using a FinderPop Items folder much as the Apple Menu Items folder used to do for the Apple menu. It has other features... Read more
VueScan 9.4.45 - Scanner software with a...
VueScan is a scanning program that works with most high-quality flatbed and film scanners to produce scans that have excellent color fidelity and color balance. VueScan is easy to use, and has... Read more
LibreOffice 4.3.2.2 - Free Open Source o...
LibreOffice is an office suite (word processor, spreadsheet, presentations, drawing tool) compatible with other major office suites. The Document Foundation is coordinating development and... Read more
calibre 2.4 - Complete e-library managem...
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
Default Folder X 4.6.9b1 - Enhances Open...
Default Folder X attaches a toolbar to the right side of the Open and Save dialogs in any OS X-native application. The toolbar gives you fast access to various folders and commands. You just click... Read more

Latest Forum Discussions

See All

Manage Your Cloud – Wunderlist Now Suppo...
Manage Your Cloud – Wunderlist Now Supports Dropbox Posted by Jessica Fisher on October 1st, 2014 [ permalink ] Universal App - Designed for iPhone and iPad | Read more »
Nexticy Review
Nexticy Review By Jennifer Allen on October 1st, 2014 Our Rating: :: IDEAL FORM CREATIONiPad Only App - Designed for the iPad Nexticy allows you to make your own forms for research purposes or to organize your business better. It’s... | Read more »
Tiny Troopers: Alliance Marches onto the...
Tiny Troopers: Alliance Marches onto the App Store Tomorrow Posted by Jessica Fisher on October 1st, 2014 [ permalink ] Tiny Troopers: Alliance, by Kukouri, is a | Read more »
HeroCraft Introduces Unlimited Sequel to...
HeroCraft Introduces Unlimited Sequel to WW2: Sandbox. Strategy & Tactics Posted by Jessica Fisher on October 1st, 2014 [ permalink ] | Read more »
RGB Express Review
RGB Express Review By Jennifer Allen on October 1st, 2014 Our Rating: :: DELIGHTFUL PUZZLINGUniversal App - Designed for iPhone and iPad Guide trucks along their delivery routes in RGB Express, a testing but charming puzzle game... | Read more »
The Sagas of Fire*Wolf (Games)
The Sagas of Fire*Wolf 1.0 Device: iOS Universal Category: Games Price: $9.99, Version: 1.0 (iTunes) Description: | Read more »
BuggyFun Review
BuggyFun Review By Amy Solomon on October 1st, 2014 Our Rating: iPad Only App - Designed for the iPad BuggyFun allows children to create their own tracks for bugs to interact with for a unique open-ended experience.   | Read more »
Fold the Adventure Review
Fold the Adventure Review By Jennifer Allen on October 1st, 2014 Our Rating: :: AWKWARD FOLDSUniversal App - Designed for iPhone and iPad Fold pieces of paper to create platforms for a princely rabbit in this puzzle game; something... | Read more »
WW2: Sandbox. Strategy & Tactics (G...
WW2: Sandbox. Strategy & Tactics 1.0.0 Device: iOS Universal Category: Games Price: $9.99, Version: 1.0.0 (iTunes) Description: ***NOTE: Compatible with iPhone 4s and up, iPad 2 and up - may not work properly on earlier devices... | Read more »
apeFilter (Music)
apeFilter 1.0 Device: iOS Universal Category: Music Price: $6.99, Version: 1.0 (iTunes) Description: | Read more »

Price Scanner via MacPrices.net

Amazon offers 13-inch MacBook Air for $899, $...
Amazon.com has the 13″ 1.4GHz 128GB MacBook Air on sale for $100 off MSRP including free shipping: - 13″ 1.4GHz 128GB MacBook Air: $899.99 Read more
Apple resting On Its iPhone Laurels? – The ‘B...
Apple calls its new iPhone 6 and 6 Plus “The Biggest Advancements in iPhone History,” but does reality live up to the hype? “Seldom have so many waited so breathlessly for so little,” tweeted veteran... Read more
Roundup of Apple Mac and iPad Education disco...
Purchase a new Mac or iPad at The Apple Store for Education and take up to $300 off MSRP. All teachers, students, and staff of any educational institution qualify for the discount. Shipping is free,... Read more
Apple Boycotts German Magazine Computer Bild...
Apple has revoked its PR accreditation of Germany’s Computer Bild, Europe’s best-selling PC magazine, in reaction to Bild’s posting of a “#Bentgate” YouTube video. Axel Telzerow, editor in chief of... Read more
iPhone 6 & iPhone 6 Plus Available in Chi...
Apple has announced that iPhone 6 and iPhone 6 Plus will be available in China beginning Friday, October 17 from the Apple Online Store (http://www.apple.com), Apple’s retail stores, and an expansive... Read more
MacBook Airs on sale for $100 off MSRP, start...
Best Buy has the new 2014 MacBook Airs on sale for $100 off MSRP on their online store. Choose free home shipping or free local store pickup (if available). Prices valid for online orders only, in-... Read more
Apple Releases OS X Mavericks bash Update 1.0...
Apple has released a patch update for OS X Mavericks users to address the recently-detected “Shellshock” security bug in BSD UNIX’s bash shell. Apple says only a few Mac users who had manually... Read more
Pivotal Payments Ready for Apple Pay – FlexPo...
Pivotal Payments, a provider of merchant services and global payment processing solutions, has announced its proprietary FlexPoint platform will support credit and debit transactions through Apple’s... Read more
iStabilizer Announces Tabarm — First Friction...
iStabilizer, a specialist in universal lightweight compact tripods, steady cams, dollies, mounts, and remotes for smartphones, tablets, and cameras, announced today the iStabilizer tabArm, the first... Read more
IStabilizer Flex Smartphone Tripod Wins Usa T...
iStabilizer, a specialist in universal lightweight compact tripods, steady cams, and other products for smartphones, tablets, and cameras, has announced today that its iStabilizer Flex smartphone... Read more

Jobs Board

*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
*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
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
*Apple* Solutions Consultant (ASC) - Apple (...
**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 / 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
All contents are Copyright 1984-2011 by Xplain Corporation. All rights reserved. Theme designed by Icreon.