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

FotoMagico 5.6.12 - Powerful slideshow c...
FotoMagico lets you create professional slideshows from your photos and music with just a few, simple mouse clicks. It sports a very clean and intuitive yet powerful user interface. High image... Read more
OmniGraffle Pro 7.12.1 - 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
beaTunes 5.2.1 - Organize your music col...
beaTunes is a full-featured music player and organizational tool for music collections. How well organized is your music library? Are your artists always spelled the same way? Any R.E.M. vs REM?... Read more
HandBrake 1.3.0 - Versatile video encode...
HandBrake is a tool for converting video from nearly any format to a selection of modern, widely supported codecs. Features Supported Sources VIDEO_TS folder, DVD image or real DVD (unencrypted... Read more
Macs Fan Control 1.5.1.6 - Monitor and c...
Macs Fan Control allows you to monitor and control almost any aspect of your computer's fans, with support for controlling fan speed, temperature sensors pane, menu-bar icon, and autostart with... Read more
TunnelBear 3.9.3 - Subscription-based pr...
TunnelBear is a subscription-based virtual private network (VPN) service and companion app, enabling you to browse the internet privately and securely. Features Browse privately - Secure your data... Read more
calibre 4.3.0 - Complete e-book library...
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 librarian... Read more
Lyn 1.13 - Lightweight image browser and...
Lyn is a fast, lightweight image browser and viewer designed for photographers, graphic artists, and Web designers. Featuring an extremely versatile and aesthetically pleasing interface, it delivers... Read more
Visual Studio Code 1.40.0 - Cross-platfo...
Visual Studio Code provides developers with a new choice of developer tool that combines the simplicity and streamlined experience of a code editor with the best of what developers need for their... Read more
OmniGraffle 7.12.1 - 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

Latest Forum Discussions

See All

The House of Da Vinci 2 gets a new gamep...
The House of Da Vinci launched all the way back in 2017. Now, developer Blue Brain Games is gearing up to deliver a second dose of The Room-inspired puzzling. Some fresh details have now emerged, alongside the game's first official trailer. [Read... | Read more »
Shoot 'em up action awaits in Battl...
BattleBrew Productions has just introduced another entry into its award winning, barrelpunk inspired, BattleSky Brigade series. Whilst its previous title BattleSky Brigade TapTap provided fans with idle town building gameplay, this time the... | Read more »
Arcade classic R-Type Dimensions EX blas...
If you're a long time fan of shmups and have been looking for something to play lately, Tozai Games may have just released an ideal game for you on iOS. R-Type Dimensions EX brings the first R-Type and its sequel to iOS devices. [Read more] | Read more »
Intense VR first-person shooter Colonicl...
Our latest VR obsession is Colonicle, an intense VR FPS, recently released on Oculus and Google Play, courtesy of From Fake Eyes and Goboogie Games. It's a pulse-pounding multiplayer shooter which should appeal to genre fanatics and newcomers alike... | Read more »
PUBG Mobile's incoming update bring...
PUGB Mobile's newest Royale Pass season they're calling Fury of the Wasteland arrives tomorrow and with it comes a fair chunk of new content to the game. We'll be seeing a new map, weapon and even a companion system. [Read more] | Read more »
PSA: Download Bastion for free, but wait...
There hasn’t been much news from Supergiant Games on mobile lately regarding new games, but there’s something going on with their first game. Bastion released on the App Store in 2012, and back then it was published by Warner Bros. This Warner... | Read more »
Apple Arcade: Ranked - 51+ [Updated 11.5...
This is Part 2 of our Apple Arcade Ranking list. To see part 1, go here. 51. Patterned [Read more] | Read more »
NABOKI is a blissful puzzler from acclai...
Acclaimed developer Rainbow Train's latest game, NABOKI, is set to launch for iOS, Android, and Steam on November 13th. It's a blissful puzzler all about taking levels apart in interesting, inventive ways. [Read more] | Read more »
A Case of Distrust is a narrative-driven...
A Case of Distrust a narrative-focused mystery game that's set in the roaring 20s. In it, you play as a detective with one of the most private eye sounding names ever – Phyllis Cadence Malone. You'll follow her journey in San Francisco as she... | Read more »
Brown Dust’s October update offers playe...
October is turning out to be a productive month for the Neowiz team, and a fantastic month to be a Brown Dust player. First, there was a crossover event with the popular manga That Time I Got Reincarnated as a Slime. Then, there was the addition of... | Read more »

Price Scanner via MacPrices.net

Score a 37% discount on Apple Smart Keyboards...
Amazon has Apple Smart Keyboards for current-generation 10″ iPad Airs and previous-generation 10″ iPad Pros on sale today for $99.99 shipped. That’s a 37% discount over Apple’s regular MSRP of $159... Read more
Apple has refurbished 2019 13″ 1.4GHz MacBook...
Apple has a full line of Certified Refurbished 2019 13″ 1.4GHz 4-Core Touch Bar MacBook Pros available starting at $1099 and up to $230 off MSRP. Apple’s one-year warranty is included, shipping is... Read more
2019 13″ 1.4GHz 4-Core MacBook Pros on sale f...
Amazon has new 2019 13″ 1.4GHz 4-Core Touch Bar MacBook Pros on sale for $150-$200 off Apple’s MSRP. These are the same MacBook Pros sold by Apple in its retail and online stores: – 2019 13″ 1.4GHz/... Read more
11″ 64GB Gray WiFi iPad Pro on sale for $674,...
Amazon has the 11″ 64GB Gray WiFi iPad Pro on sale today for $674 shipped. Their price is $125 off MSRP for this iPad, and it’s the lowest price available for the 64GB model from any Apple reseller. Read more
2019 15″ MacBook Pros available for up to $42...
Apple has a full line of 2019 15″ 6-Core and 8-Core Touch Bar MacBook Pros, Certified Refurbished, available for up to $420 off the cost of new models. Each model features a new outer case, shipping... Read more
2019 15″ MacBook Pros on sale this week for $...
Apple resellers B&H Photo and Amazon are offering the new 2019 15″ MacBook Pros for up to $300 off Apple’s MSRP including free shipping. These are the same MacBook Pros sold by Apple in its... Read more
Sunday Sale: AirPods with Wireless Charging C...
B&H Photo has Apple AirPods with Wireless Charging Case on sale for $159.99 through 11:59pm ET on November 11th. Their price is $40 off Apple’s MSRP, and it’s the lowest price available for these... Read more
Details of Sams Club November 9th one day App...
Through midnight Saturday night (November 9th), Sams Club online has several Apple products on sale as part of their One Day sales event. Choose free shipping or free local store pickup (if available... Read more
Sprint is offering the 64GB Apple iPhone 11 f...
Sprint has the new 64GB iPhone 11 available for $15 per month for new lines. That’s about 50% off their standard monthly lease of $29.17. Over is valid until November 24, 2019. The fine print: “Lease... Read more
New Sprint November iPhone deal: Lease one iP...
Switch to Sprint and purchase an Apple iPhone 11, 11 Pro, or 11 Pro Max, and get a second 64GB iPhone 11 for free. Requires 2 new lines or 1 upgrade-eligible line and 1 new line. Offer is valid from... Read more

Jobs Board

*Apple* Mobility Pro - Best Buy (United Stat...
**746087BR** **Job Title:** Apple Mobility Pro **Job Category:** Store Associates **Store NUmber or Department:** 000319-Harlem & Irving-Store **Job Description:** Read more
Best Buy *Apple* Computing Master - Best Bu...
**743392BR** **Job Title:** Best Buy Apple Computing Master **Job Category:** Store Associates **Store NUmber or Department:** 001171-Southglenn-Store **Job Read more
Best Buy *Apple* Computing Master - Best Bu...
**746015BR** **Job Title:** Best Buy Apple Computing Master **Job Category:** Sales **Store NUmber or Department:** 000372-Federal Way-Store **Job Description:** Read more
*Apple* Mobility Pro - Best Buy (United Stat...
**744658BR** **Job Title:** Apple Mobility Pro **Job Category:** Store Associates **Store NUmber or Department:** 000586-South Hills-Store **Job Description:** At Read more
Best Buy *Apple* Computing Master - Best Bu...
**741552BR** **Job Title:** Best Buy Apple Computing Master **Job Category:** Sales **Store NUmber or Department:** 000277-Metcalf-Store **Job Description:** **What Read more
All contents are Copyright 1984-2011 by Xplain Corporation. All rights reserved. Theme designed by Icreon.