TweetFollow Us on Twitter

Aug 90 Letters
Volume Number:6
Issue Number:8
Column Tag:Letters

Rotate Bug Discovered

By Kirk Chase, Editor, MacTutor

Tool Window Manager

Jean-Philippe Mariani

Grabels, France

I send you this letter for a special purpose. Indeed, in the 1988 December issue (Vol. 4, No. 12) was published the article concerning the “Tool Window Manager” by Thomas Fruin. This article was very good. but more interesting was the letter from the same Thomas Fruin in the 1989 April issue where he mentioned that he had written a MPW Pascal Unit of the “Tool Window Manager”. He said at the end of his letter that he would send this version to MacTutor in order that subscribers of MacTutor interested by it be able to get it directly from you. So, I’m inquiring if you have received this Pascal version of the “Tool Window Manager”.

Before ending, I would like to tell that you at MacTutor are doing a great job for the programmer’s community, and I’m really satisfied to have joined the MacTutor community last year. As I can’t completely devote to programming because of my studies, your magazine and your source code disks are of a great help to me. They allow me to study Macintosh programming while pursuing studies in business.

[The MPW Pascal unit for the Tool Window Manager has not been received here at MacTutor. Thomas, if you’re reading this, please send it in! People have been asking for it over and over. When it does come in, I will post a notice in the Letters column.-ed]

Detecting MultiFinder

Christopher R. Wysocki

Brookfield Center, CT

I found Paul Davis’ article “Detecting MultiFinder” in the March issue to be interesting, but it left me wondering why he went to so much trouble to determine if MultiFinder is running. For this I’ve always relied on the existence of the _OSDispatch trap; i.e.:

/* 1 */

#define _OSDispatch 0xA88F
#define _Unimplemented 0xA89F

Boolean MultiFinderIsUp()
{
 return (NGetTrapAddress(_OSDispatch, ToolTrap) != GetTrapAddress(_Unimplemented));
}

This was taken almost verbatim from the Programmer’s Guide to MultiFinder. Normally you’d use this routine to check for the existence for the existence of the temporary memory allocation calls, but since they’re available only with MultiFinder, it essentially tells you if MultiFinder is running or not. I’m using this method in my current Mac project, and it seems to work just fine.

While I’m at it, let me extend my thanks to you for a superb magazine. I’ve been reading MacTutor for about two years now, and I’ve become a much more knowledgeable Mac programmer as a result. Back issues of MacTutor have become an indispensable part of my programming library. Merci beaucoup.

Macintosh Summit Conference

University of California

Santa Barbara

The First Annual Macintosh Summit Conference is being held at the University of California, Santa Barbara on August 22 to 24. The host is Mac guru, Guy Kawasaki. The conference will have sessions on graphics, printing, System 7.0 and so on. The cost is $680.30 for the conference. You may obtain more information by calling (805) 893-4952.

OOPSLA/ECOOP ’90

Ottawa, Ontario, Canada

The fifth Object-Oriented Programming Systems, Languages, and Applications Conference is scheduled for October 21-25 in Ottawa, Canada. Joining them will be the European Conference on Object-Oriented Programming. For further information about the conference, contact Karen Offermann at (609) 764-0100.

Rotate Update

Bryce L. Fowler

Palo Alto, CA

For some time now I’ve been using the assembly procedure “Rotate,” published in MacTutor Vol. 4, No. 2 and the enhanced in Vol. 4, No. 11, to display rotated text in my own programs. Recently, using the latest versions of MPW and MacApp, Rotate started bombing at the instruction

;2

movea.l currentWord-localVars(a0), a2

With the aid of Steve Jasik’s Debugger, I was able to track the problem down to a nonzero value in the hi-word of register d7. Stray values in the hi-word of d7 will cause problems at the instruction “sub.l d7, currentWord-localVars(a0)” (or in the Vol. 4, No. 11 version at all the “sub.l d7, a2” instructions in the unwrapped loop).

The fix is simple. In either version of Rotate, add the line

;3

clr.l d7

just before the register is first used, i.e., place the instruction before the lines

;4

move.w  bounds+bottom(a1), d7
sub.w   bounds+top(a1), d7
move.w  d7, d0

Mouse track & field comment

Rodney K. Magnuson

MindVision Software

Lincoln, NE

I would like to comment on the Mouse Track and Field article. I thought it was great to finally see a replacement for Text Edit in one of your articles. As a programmer, there are times when you wish you did not have to use Text Edit, but feel that the job does not justify writing a replacement yourself. My excitement was stifled when I read that the code was copyrighted and could not be used freely in commercial programs. I ask you, what was the use of publishing the article? Perhaps the author is thinking of going back to school to become a lawyer and is going to wait an undetermined amount of time before he starts looking for code that may resemble his text editing routines. Ok...that was a little harsh and most likely not true, but I hope you get my point.

I would also like to comment on the dialog articles of the April issue. The ideas expressed in the articles were very good. I would also like to add a notion. Dialogs that contains variable sized text boxes should resize themselves according to the amount of text they are displaying. Since most applications do not include these features, I have written an INIT that adds all of these features and more to every dialog. The INIT is called ModalKeys and will be available soon in an INIT package called PowerPack. ModalKeys also allows users to hit a Hot Key that will toggle the titles of all of the buttons of a dialog to their command keys. This features is also included in our HyperCard/SuperCard report generator: Elaborate! I do not know of any other utilities/applications that do this.

Keep up the good work.

[Rodney, you are perfectly able to use the code found in any article of MacTutor. Copyright notices must be kept and credit of the source found somewhere in your application, such as the About box. Martin does want a copy of any commercial application using his code treating him like he bought it.-ed]

Menu Shortcuts

Sean Nolan

Sommerville, MA

Here’s a little trick which I’ve found has helped with menu command keys. It solves several problems:

1. On some international keyboards, command-period doesn’t work since the shift key is required in order to type a period. The shift key is usually ignored if the command key is down. This also prevents you from using command-plus as a menu shortcut (it is so natural to have command-plus and command-minus for two related commands). TechNote #263 describes this problem.

2. You can’t have keyboard equivalents for menu items which have small icons in them (see TechNote #253).

3. Any other command keys for things that are not in menus (such as buttons or elements of a tool palette) tend to be hard-coded into programs rather than use resources. This is bad, wrong, and evil.

My solution was to create a menu which has all the additional command keys I needed. The menu is not part of the menu bar, and is not visible to the user. It is installed the same way hierarchical and popup menus are:

/* 5 */

gKeyShortcutsMenu = GetMenu(KEYSHORTCUTS_ID);
InsertMenu(gKeyShortcutsMenu, -1);

The key shortcuts menu has a cancel item with the command key equivalent of command-period. If I ever produce an Italian version of my program, I will change this to command-semicolon (an unshifted period on Italian keyboards). The menu also has an ADD_ITEM with a shortcut of command-= (I also have an ADD_ITEM in another visible menu; It’s shortcut is command-+, which is , alas, never used). There are PAGE_UP (command-up arrow) and PAGE_DOWN (command-down arrow) items for paging the current window’s scrollbar. It’s easier to add it to the shortcuts menu than to test for the key code in the event loop. In addition, my shortcuts menu has items parallel all of my regular menu items which have small icons with them. The small icon’d menu items can’t have keyboard equivalents, but I’ve made it so they look like they do: the name of the menu items contain the command character plus the key shortcut character.

Finder/MultiFinder Switching

Sean Nolan

Sommerville, MA

Here’s a way to switch back and forth between Finder and MultiFinder quickly. It requires MacroMaker (or some other keyboard macro program) and ResEdit.

First, open up MacroMaker and create two macros. Start recording to make Option-Command-M (“M” for “MultiFinder”) do the following actions: select “Set Startup” in the Special menu, click on the MuliFinder radio button, click on the OK button, and then type option-command-R. Go to the MacroMaker menu and stop recording.

Make a second Finder macro invoked by option-command-F (“F” for “Finder”). Have it select “Set Startup” in the Special menu, click on the Finder radio button, click on the OK button, and then type option-command-R.

Next, make it so that option-command-R restarts the machine. It isn’t obvious, but you can have an option-character as the command key for a menu item. Open up the Finder’s Special menu using ResEdit and make option-R the command key for “Restart”. For symmetry, I also make the option-S the command key for “Shutdown”.

You now have four shortcuts from the Finder available:

option-command-R restarts your Mac

option-command-S shutsdown your Mac

option-command-F restarts your Mac in Finder

option-command-M restarts your Mac in MultiFinder

 

Community Search:
MacTech Search:

Software Updates via MacUpdate

NetNewsWire 5.1 - RSS and Atom news read...
NetNewsWire is the best way to keep up with the sites and authors you read most regularly. Let NetNewsWire pull down the latest articles, and read them in a distraction-free and Mac-like way. Native... Read more
FontExplorer X Pro 7.1.3 - Font manageme...
FontExplorer X Pro is optimized for professional use; it's the solution that gives you the power you need to manage all your fonts. Now you can more easily manage, activate and organize your... Read more
DiskCatalogMaker 8.2.5 - Catalog your di...
DiskCatalogMaker is a simple disk management tool which catalogs disks. Simple, light-weight, and fast Finder-like intuitive look and feel Super-fast search algorithm Can compress catalog data for... Read more
Skim 1.5.12 - PDF reader and note-taker...
Skim is a PDF reader and note-taker for OS X. It is designed to help you read and annotate scientific papers in PDF, but is also great for viewing any PDF file. Skim includes many features and has a... Read more
rekordbox 6.1.0.0030 - Professional DJ m...
rekordbox is the best way of preparing and managing your tracks, be it at home, in the studio, or even on the plane! It allows you to import music from other music-management software using the... Read more
iExplorer 4.4.0 - View and transfer file...
iExplorer is an iPhone browser for Mac lets you view the files on your iOS device. By using a drag and drop interface, you can quickly copy files and folders between your Mac and your iPhone or... Read more
OmniGraffle 7.17.5 - Create diagrams, fl...
OmniGraffle helps you draw beautiful diagrams, family trees, flow charts, org charts, layouts, and (mathematically speaking) any other directed or non-directed graphs. We've had people use Graffle to... Read more
Apple Configurator 2.13.1 - Configure an...
Apple Configurator makes it easy to deploy iPad, iPhone, iPod touch, and Apple TV devices in your school or business. Use Apple Configurator to quickly configure large numbers of devices connected to... Read more
OmniGraffle Pro 7.17.5 - Create diagrams...
OmniGraffle Pro helps you draw beautiful diagrams, family trees, flow charts, org charts, layouts, and (mathematically speaking) any other directed or non-directed graphs. We've had people use... Read more
FoldersSynchronizer 5.1.6 - Synchronize...
FoldersSynchronizer is a popular and useful utility that synchronizes and backs-up files, folders, disks and boot disks. On each session you can apply special options like Timers, Multiple Folders,... Read more

Latest Forum Discussions

See All

Infinity Mechs is an upcoming idle game...
Indie developer SkullStar studio has announced an upcoming idle mech game called Infinity Mechs. It draws inspiration from the mobile game Iron Saga and has been officially licensed by Game Duchy. It's set to launch for both iOS and Android on... | Read more »
PUBG Mobile Lite's latest update se...
PUBG Mobile Lite, the streamlined version of the popular battle royale that's designed to work on less powerful devices, sees the return of a popular game variant today, Survive Till Dawn mode. It arrives as part of the 0.19.0 content update. [... | Read more »
Matchy Catch, Jyamma Games’ new hyper-ca...
Matchy Catch is a new hyper-casual puzzler from Jyamma Games, the Italian studio behind the Pong-inspired puzzle-adventure Hi-Ball Rush. It’s only the developer’s second game for iOS and Android devices, but it promises to be every bit as fun and... | Read more »
Among Us! Imposter Guide - How to be a s...
Among Us! continues to be getting a lot of play in these parts, and since our first guide we've learned a thing or two about the game. This is especially true regarding the imposter role, as its a relatively rare opportunity that we've now put... | Read more »
Paladin's Story is an upcoming fant...
Paladin's Story is an upcoming fantasy RPG with an off-kilter sense of humour that's heading for iOS and Android. It will officially launch for both on September 16th though the game is already available on Google Play in Early Access. [Read more... | Read more »
Among Us! Guide - Tips for the uninitiat...
| Read more »
A Pretty Odd Bunny is a stealth-platform...
A Pretty Odd Bunny is a stealth-platformer from two-man team AJ Ordaz and René Rivera. It follows the story of a red-eyed rabbit who is allergic to carrots and instead has a penchant for devouring pigs. It's available now for Android devices. [... | Read more »
Apple Arcade: Ranked - Top 25 [Updated 9...
In case you missed it, I am on a quest to rank every Apple Arcade game there is. [Read more] | Read more »
The 5 Best Mobile Games Like Tony Hawk...
Tony Hawk’s Pro Skater 1+2 dropped last week, meaning you can get remastered versions of two of the most iconic “sports” games ever made and experience some of the highest watermarks set in games of generations’ past. [Read more] | Read more »
Bouncing Box is a challenging platformer...
In platformers, we often spend a large amount of time mindless destroying boxes by jumping onto or into them, whatever makes them splinter apart. Bouncing Box from developer The K Brothers aims to give those poor destructible cubes a chance to be... | Read more »

Price Scanner via MacPrices.net

Base 13″ 1.4GHz Apple MacBook Pros on sale fo...
Apple reseller Expercom is offering a $65-$75 discount on new 2020 13″ 1.4GHz MacBook Pros, depending on configuration. Shipping is free. Expercom estimates shipping in 3-5 days, as stock of Apple’s... Read more
Price drop! Get a 44mm Apple Watch Series 5 G...
Amazon has dropped their price on the 44mm Apple Watch Series 5 GPS + Cellular by $100 to $429 shipped. That’s $100 off Apple’s original MSRP for this model. For the latest prices and sales, see our... Read more
Verizon offers $200 discount on new Apple Wat...
Verizon will take up to $200 off the purchase of a new GPS + Cellular Apple Watch Series 6 or Apple Watch SE with select trade-in and the purchase of a new iPhone with service. The fine print: “Get... Read more
Verizon offers $250 discount on new 8th gener...
Verizon will take up to $250 off the price of an 8th generation 2020 Apple Cellular iPad with select trade-ins and a new iPhone purchase. Plus get Apple News+ free for 6 months. The fine print: “Save... Read more
Apple’s Implementation Of COVID-19 Exposure...
NEWS: 09.18.20 – The latest effort by Apple to embed exposure notifications for COVID-19 contact tracing right into its mobile operating system has some iPhone users weary of being exposed to... Read more
Here’s how to get a 16″ MacBook Pro for $300...
B&H Photo has new 16″ MacBook Pros on sale today for $250-$300 off Apple’s MSRP, starting at $2099. Expedited shipping is free to many addresses in the US: – 2019 16″ 2.6GHz 6-Core MacBook Pro... Read more
Apple has Certified Refurbished 16″ MacBook P...
Apple has Certified Refurbished 2019 16″ MacBook Pros available for up to $420 off the cost of new models, starting at $2039. Each model features a new outer case, shipping is free, and an Apple 1-... Read more
Price drops! Apple reseller B&H drops App...
B&H Photo has dropped prices on Apple Watch Series 5 models by $50-$70 off Apple’s original MSRP. Shipping is free. These are the same Apple Watch models sold by Apple in their retail and online... Read more
Apple extends their 2020 Back-to-School promo...
As part of their Back to School promotion for 2020, Apple will include one free pair Apple AirPods (with charging case) with the purchase of a MacBook Air, MacBook Pro, iMac, iMac Pro (Mac Pro and... Read more
Apple 7.9″ iPad minis are on sale today for $...
Amazon has new 7.9″ 64GB WiFi iPad minis on sale today for $50 off Apple’s MSRP, each including free shipping. Prices start at $349. These are the same iPad minis sold by Apple in their retail and... Read more

Jobs Board

Security Officer ($23.00/Hourly) - *Apple*...
**Security Officer \($23\.00/Hourly\) \- Apple Store** **Description** About NMS Built on a culture of safety and integrity, NMSdelivers award\-winning, integrated Read more
Platform - Workplace Eng - *Apple* Enterpri...
MORE ABOUT THIS JOB We are looking for an Apple Platform Engineer who will bring a unique engineering skill set, support, clarity, organization and above all else, Read more
*Apple* Certified Repair Technician - Utah S...
…selected candidate will work in the USU Campus Store Tech Department as an Apple Certified Repair Technician and floor associate. This position is for both summer Read more
Senior Data Engineer - *Apple* - Theorem, L...
Job Summary Apple is seeking an experienced, detail-minded data engineeringconsultant to join our worldwide business development and strategy team. If you are Read more
Desktop Support Technician - A+, *Apple* -...
Desktop Support Technician - A+, Apple **Ref No.:** 20-01604 **Location:** Miami, Florida **e** at http://www.excell.com/ **X** at http://www.excell.com/ **cell** at Read more
All contents are Copyright 1984-2011 by Xplain Corporation. All rights reserved. Theme designed by Icreon.