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).*

 

Community Search:
MacTech Search:

Software Updates via MacUpdate

Apple Pro Video Formats 2.0.2 - Updates...
Apple Pro Video Formats brings updates to Apple's professional-level codes for Final Cut Pro X, Motion 5, and Compressor 4. Version 2.0.2: Includes support for the following professional video codecs... Read more
Apple Final Cut Pro X 10.2.2 - Professio...
Apple Final Cut Pro X is a professional video editing solution.Completely redesigned from the ground up, Final Cut Pro adds extraordinary speed, quality, and flexibility to every part of the post-... Read more
Apple Compressor 4.2.1 - Adds power and...
Compressor adds power and flexibility to Final Cut Pro X export. Customize output settings, work faster with distributed encoding, and tap into a comprehensive set of delivery features. Powerful... Read more
Apple Motion 5.2.2 - Create and customiz...
Apple Motion is designed for video editors, Motion 5 lets you customize Final Cut Pro titles, transitions, and effects. Or create your own dazzling animations in 2D or 3D space, with real-time... Read more
A Better Finder Rename 10.00b1 - File, p...
A Better Finder Rename is the most complete renaming solution available on the market today. That's why, since 1996, tens of thousands of hobbyists, professionals and businesses depend on A Better... Read more
CrossOver 14.1.6 - Run Windows apps on y...
CrossOver can get your Windows productivity applications and PC games up and running on your Mac quickly and easily. CrossOver runs the Windows software that you need on Mac at home, in the office,... Read more
Printopia 2.1.14 - Share Mac printers wi...
Run Printopia on your Mac to share its printers to any capable iPhone, iPad or iPod Touch. Printopia will also add virtual printers, allowing you to save print-outs to your Mac and send to apps.... Read more
Google Drive 1.24 - File backup and shar...
Google Drive is a place where you can create, share, collaborate, and keep all of your stuff. Whether you're working with a friend on a joint research project, planning a wedding with your fiancé, or... Read more
Chromium 45.0.2454.85 - Fast and stable...
Chromium is an open-source browser project that aims to build a safer, faster, and more stable way for all Internet users to experience the web. Version 45.0.2454.85: Note: Does not contain the "... Read more
OmniFocus 2.2.5 - GTD task manager with...
OmniFocus helps you manage your tasks the way that you want, freeing you to focus your attention on the things that matter to you most. Capturing tasks and ideas is always a keyboard shortcut away in... Read more

Spirit Hunter is an Upcoming Collectible...
Boomlagoon, the team behind hybrid CCG/runner Monsu, has announced their newest project: a collectible card game/action RPG named Spirit Hunter. [Read more] | Read more »
Zen Brush 2 (Entertainment)
Zen Brush 2 1.0 Device: iOS Universal Category: Entertainment Price: $2.99, Version: 1.0 (iTunes) Description: Zen Brush 2 is a drawing app focused on the strong yet beautiful feel of the East Asian ink brush. | Read more »
NetNewsWire (News)
NetNewsWire 4.0.0 Device: iOS iPhone Category: News Price: $3.99, Version: 4.0.0 (iTunes) Description: Follow the Web NetNewsWire 4, completely written from the ground up for iPhone. NetNewsWire is the best way to keep up with the... | Read more »
Huzzah! Farming Simulator 16 Supports Cl...
As though it weren't difficult enough to resist the siren call of Farming Simulator 16, now it's been updated with cloud saves - so you can jump between devices without missing any of that precious crop-harvesting time. [Read more] | Read more »
Don't Starve: Pocket Edition Finall...
I've made no effort to hide my enjoyment of Don't Starve: Pocket Edition, but I will admit I was a tiny bit disappointed that it was only available for the iPad. Well nuts to that, because Klei Entertainment has made it universal! [Read more] | Read more »
Goat Simulator Wasn't Enough? Then...
If you just didn't get enough goat in Goat Simulator - or if you've been wanting to play a simulated MMO as a microwave - then you're in luck! Goat Simulator MMO Simulator is out now, and it's a game about simulated goats in simulated MMOs. Plus... | Read more »
You Can Play Madfinger Games' Unkil...
Madfinger Games - probably best known for the Dead Trigger series - has officially launched their newest zombie shooter (that isn't called Dead Trigger), named Unkilled. [Read more] | Read more »
KORG iELECTRIBE for iPhone (Music)
KORG iELECTRIBE for iPhone 1.0.1 Device: iOS iPhone Category: Music Price: $9.99, Version: 1.0.1 (iTunes) Description: ** 50% OFF Special Launch Sale - For a Limited Time **The ELECTRIBE reborn in an even smaller form A full-fledged... | Read more »
Toca Life: City Just Got a Bunch of New...
Toca Life: City is Toca Boca's most popular app (number 1 in 47 different countries, apparently), and it's just had an update that adds a bunch of new content. [Read more] | Read more »
My Country 3D is More About Cities than...
My Country 3D is an upcoming city builder from Game Insight that looks pretty decent - although the name seems a tad out of whack for a city builder. Ah well, it is what it is. [Read more] | Read more »

Price Scanner via MacPrices.net

DEVONthink and Co. 40% Off For Students And E...
Students and teachers are either preparing for the new semester or are already back in school. And the better organized they are the easier it is for them to concentrate on what’s really important:... Read more
Labor Day Weekend Sale: MacBook Air for up to...
Best Buy has MacBook Airs on sale for up to $150 off MSRP on their online store this weekend. Choose free shipping or free local store pickup (if available). Sale prices for online orders only, in-... Read more
BassJump Subwoofer for MacBook Refreshed...
Twelve South has released a software update for BassJump, their portable subwoofer for Macbook. BassJump 3.0 has a radically redesigned interface, and the software refresh makes the BassJump... Read more
Near-Office Input Functionality Virtually Any...
Today Logitech introduced the Logitech K380 Multi-Device Bluetooth Keyboard and the Logitech M535 Bluetooth Mouse, giving users the freedom to work on any device, most anywhere. According to... Read more
College Student Deals: Additional $100 off Ma...
Take an additional $100 off all MacBooks and iMacs at Best Buy Online with their College Students Deals Savings, valid through September 4, 2015. Anyone with a valid .EDU email address can take... Read more
2.8GHz Mac mini available for $988, includes...
Adorama has the 2.8GHz Mac mini available for $988, $11 off MSRP, including a free copy of Apple’s 3-Year AppleCare Protection Plan. Shipping is free, and Adorama charges sales tax in NY & NJ... Read more
Will You Buy An iPad Pro? – The ‘Book Mystiqu...
It looks like we may not have to wait much longer to see what finally materializes as a new, larger-panel iPad (Pro/Plus?) Usually reliable Apple product prognosticator KGI Securities analyst Ming-... Read more
eFileCabinet Announces SMB Document Managemen...
Electronic document management (EDM) eFileCabinet, Inc., a hosted solutions provider for small to medium businesses, has announced that its SecureDrawer and eFileCabinet Online services will be... Read more
WaterField Designs Unveils American-Made, All...
San Francisco’s WaterField Designs today unveiled their all-leather Cozmo 2.0 — an elegant attach laptop bag with carefully-designed features to suit any business environment. The Cozmo 2.0 is... Read more
Apple’s 2015 Back to School promotion: Free B...
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

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
Content Partner Engineer - *Apple* TV - App...
**Job Summary** The Apple TV team is looking for an experienced engineer with a passion for delivering first in class home entertainment solutions. The candidate will Read more
*Apple* Desktop Analyst - KDS Staffing (Unit...
…field and consistent professional recruiting achievement. Job Description: Title: Apple Desktop AnalystPosition Type: Full-time PermanentLocation: White Plains, NYHot Read more
*Apple* Retail - Multiple Customer Support P...
Job Description: Customer Support Specialist - Retail Customer Service and Sales Transform Apple Store visitors into loyal Apple customers. When customers enter the Read more
*Apple* Desktop Analyst - KDS Staffing (Unit...
…field and consistent professional recruiting achievement. Job Description: Title: Apple Desktop AnalystPosition Type: Full-time PermanentLocation: White Plains, NYHot Read more
All contents are Copyright 1984-2011 by Xplain Corporation. All rights reserved. Theme designed by Icreon.