TweetFollow Us on Twitter

Winter 91 - 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,

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.

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.

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.

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).*


Community Search:
MacTech Search:

Software Updates via MacUpdate

Square Rave guide - How to grab those te...
Square Rave is an awesome little music-oriented puzzle game that smacks of games like Lumines, but with its own unique sense of gameplay. To help wrap your head around the game, keep the following tips and tricks in mind. [Read more] | Read more »
Snowboard Party 2 (Games)
Snowboard Party 2 1.0 Device: iOS Universal Category: Games Price: $1.99, Version: 1.0 (iTunes) Description: Crowned the best snowboarding game available on the market, Snowboard Party is back to fulfill all your adrenaline needs in... | Read more »
The best games like Animal Crossing on m...
Animal Crossing amiibo Festival is out right now for the Wii U, reminding us of just how much fun that world can be. Or at least to go back and check in on our villages once in a while. [Read more] | Read more »
Between 2 Taps - Tap for Tap interview M...
Hello, and welcome back to Between 2 Taps, Tap for Tap’s Indie Dev interview series. [Read more] | Read more »
Facility 47 (Games)
Facility 47 1.0.1 Device: iOS Universal Category: Games Price: $3.99, Version: 1.0.1 (iTunes) Description: You wake up alone and freezing in an icy cell. You try the cell door but it’s locked, it seems that you are stuck with no... | Read more »
The best Photoshop alternative on iPad
Instagram and Lightroom are great and all, but sometimes people need to get extra creative with their image editing.Like, Photoshop creative. If you're one of these people, take a look at our pick for the best mobile Photoshop experience on iPad... | Read more »
The Walking Dead: No Man’s Land guide -...
A new update for The Walking Dead: No Man’s Land was released last week, making it the perfect time for you to head back to your base and take out some walkers. Here’s the lowdown on what’s new to the game, and how to take advantage. [Read more] | Read more »
Goat Rider guide - Tips and tricks to st...
We've all been there. One second, we're riding high on a crazed goat, and the next, we've been tossed off it like someone who's no good at goat ridin'. [Read more] | Read more »
Real Boxing 2 CREED: How to become a gre...
Just in time for Rocky fans who can’t wait to see CREED, the latest movie, we have the official tie-in game,Real Boxing 2 CREED. It builds on the success of its predecessor and there’s lots to take in so we at 148apps thought we’d run you through... | Read more »
CoinOp Heroes 2 guide - How to build an...
CoinOp Heroes 2 justlaunched and, like all clickers, it's dangerously addictive stuff. You have to furiously tap your screen to defeat wave after wave of foes and earn an insane amount of cash to spend on character upgrades and an army of minions... | Read more »

Price Scanner via

Best Buy Black Friday deals: Up to $200 off M...
Best Buy has posted their Black Friday sale prices for 2015. Save on MacBook Pros, MacBooks, MacBook Airs, iMacs, iPads, and Apple Watches. Choose free shipping or free local store pickup (if... Read more
Save $30-$40 on new Apple TVs after rebate
Adorama has new Apple TVs on sale for up to $40 off MSRP after mail-in rebate, good through December 15th. Shipping is free, and Adorama charges NY & NJ sales tax only: - 32GB Apple TV: $119.99... Read more
13-Inch Haswell MacBook Air At Two Years – Th...
The 13-inch mid-2013 “Haswell” MacBook Air I ordered in Apple’s November 2013 Black Friday sale was my first new Mac in four and a half years — the longest interval I’ve gone between system upgrades... Read more
Target Black Friday Early Access deals: $100...
Target is offering early access to their Black Friday deals on Apple products on their online store for today, the 25th, only. Choose free shipping or free local store pickup (if available): - Apple... Read more
BlackBerry Q3 Mobility Index Report Finds iOS...
BlackBerry has announced results of its thirteenth Good Mobility Index Report, showing that organizations are increasingly building custom secure apps. Among Good Powered by BlackBerry (formerly Good... Read more
Wednesday roundup of early Black Friday Mac s...
Save up to $500 on a new Mac with these early Black Friday deals from Apple resellers, currently the lowest prices available for these models: (1) B&H Photo has all new Macs on sale for up to $... Read more
iPod nano on sale for $119, $30 off MSRP
Walmart has the 16GB iPod nano (various colors) on sale for $119.20 on their online store for a limited time. That’s $30 off MSRP. Choose free shipping or free local store pickup (if available). Sale... Read more
Adorama Black Friday deals: Up to $400 off Ma...
Adorama has released their Black Friday deals for 2015. Save up to $400 on MacBook Pros, $200 on MacBooks and MacBook Airs, and $270 on iMacs. Use code RYBFDEAL during checkout to see these prices.... Read more
B&H Photo Deals: $200 off 12-inch 1.2GHz...
In addition to the B&H Photo Black Friday week sales we posted yesterday, B&H has lowered their price on two products to $200 off MSRP: - 12″ 1.2GHz Gray Retina MacBook: $1399 save $200 - 13... Read more
Best Buy Early Access: Today only, Up to $125...
Best Buy has iPad Air 2s on sale for up to $125 off MSRP and Apple Watch models on sale on their online store for up to $100 off MSRP with special codes through midnight CT tonight. Choose free... Read more

Jobs Board

Hardware Systems Integration Engineer - *App...
# Hardware Systems Integration Engineer - Apple Watch Job Number: 39380139 Santa Clara Valley, Califo ia, United States Posted: Apr. 23, 2015 Weekly Hours: **Job Read more
Sr. Technical/Project Manager, *Apple* Educ...
# Sr. Technical/Project Manager, Apple Education Job Number: 36588557 New York City, New York, United States Posted: Jul. 30, 2015 Weekly Hours: 40.00 **Job Summary** 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
Merchant Operations Manager: *Apple* Pay -...
Changing the world is all in a day's work at Apple . If you love innovation, here's your chance to make a career of it. You'll work hard. But the job comes with more than Read more
*Apple* Pay QA Manager - Apple Inc. (United...
Changing the world is all in a day's work at Apple . If you love innovation, here's your chance to make a career of it. You'll work hard. But the job comes with more than Read more
All contents are Copyright 1984-2011 by Xplain Corporation. All rights reserved. Theme designed by Icreon.