TweetFollow Us on Twitter

Dec 88 Letters
Volume Number:4
Issue Number:12
Column Tag:£etters

Happy Aniversary

By David E. Smith, Editor & Publisher, MacTutor

Prototyper™ vs FaceIt™ vs Programmer’s Extender™

George R. Cossey

Author of Prototyper™

First let me say that the goal of Prototyper™ is similar to the other two products, but the implementation is very different. The goal for all of us is to make designing and building a Macintosh program less painful.

Prototyper™ has a built-in visual editors and simulators for interactive graphical design of the user interface, while the other two products provide no direct visual interaction in the program design.

Prototyper™ generates source code that uses only Mac Toolbox and does not supply any private or additional libraries for linking to. The other two products supply libraries to link to and provide their own toolboxes to interface to. The other two products supply libraries to link to and provide their own toolboxes to interface to the Mac interface.

Programmer’s Extender™ and FaceIt™ both try to make the Mac interface less of a challenge by using custom designed libraries that combine the functionality of multiple toolbox calls along with some canned control code. My objection to that method, as a programmer, is that canned libraries work for only specific conditions and if my program requires something a little extra that is not in the canned library then I have to replace it with my own code that uses the Mac Toolbox anyway. Prototyper™ generates source code that uses only the Mac Toolbox, so any “tweaking” that I have to do to a routine is easily added.

I commend both Programmer’s Extender™ and FaceIt™ for developing their own interface libraries to make programming on the Mac easier. Programmer’s Extender™ is a fine product that shows the dedication and high level of expertise of the designers. FaceIt™ is a fairly recent newcomer and has potential to provide the same level of functionality that Programmer’s Extender™ does.

In summary, I developed Prototyper with two main goals in mind. The first was to make designing a program’s interface like painting a picture in MacDraw, with objects that could be resized and repositioned visually. The second was to provide source code that used only the standard Mac Toolbox and not any special libraries. Both objectives were realized with Prototyper™, and I feel it is in a different class than Programmer’s Extender™ and FaceIt™ which use special libraries of functions.

[I commend Mr. Cossey on his excellent product. I like designing my interface at a MacDraw-type level. I would say that this type of development tool is for programming like the Mac was for user interfaces. This is not to say that I do not like or use the other products when doing my own developing.

Prototyper is definitely not perfect. There are many things I would like added or changed. But this shows how much I like what Prototyper tries to do. I want to improve what it does, not just throw it out. I can see in the future that this will be the avenue of interface developing. The interactive feel of seeing your interface is very gratifying. Mr. Cossey, please keep improving Prototyper. I feel you have a product with lots of potential. -Kirk Chase, Assistant Editor, MacTutor]

Word 3.01 Word Wrap

Steve Seaquist

Temple Hills, MD

After much more sleuthing, I’ve determined that font widths on the screen do not vary according to what printer is Chooser’d. The reason why word wrap and tab stops vary between ImageWriters and LaserWriters is Word’s variation of how it measures an inch:

• Chooser an ImageWriter, then Show Ruler, then get out a real-world ruler (a tape measure, for example) and hold it up to the screen. The inches that Word shows are notably longer than real-world inches.

• Now start a print job using Tall Adjusted. Afterwards, the word wrap point will change. Then do a Page Preview. Afterwards the on-screen ruler’s measurements will also change, and the new ruler’s inches will be a lot closer to (a tiny bit shorter than) real-world inches. (The requirement of doing Page Preview to change the ruler is probably a bug. It should change automatically to reflect current word wrap and tab stops.)

• I believe Word is using THPrint()^^.prInfo.iHRes to determine the number of pixels per inch in the on-screen ruler will accurately reflect the number of inches when the document is printed. This is the old aspect ratio problem.

• Dots on the screen are square 74dpi x 74dpi.

• Dots on IW, Tall are rectangles 72dpi x 80dpi.

• Dots on IW, tall adj. are square 72dpi x 72dpi.

To answer my previous questions:

(1) There is indeed a good reason to change word wrap and tab stops when changing between IWs and LWs. The difference in aspect ratio would yield a different number of characters that could fit comfortably on a line. Because only the center or end point(s) positions of lines are guaranteed, the LW driver’s QD-to-PS bottlenecks would generate lines longer than anticipated (left, right, or centered justified) or too compressed (fully justified). So the passage at the beginning of Tech Note 72 (about printing to LWs the same way as you would to IWs) is misleading.

(2) Contrary to my earlier suspicions, Word wasn’t playing any tricks to change screen font widths. In actuality, printer resolution changes printout font widths, and Word simply adjusts its screen display accordingly.

(3) The trick to getting IW rough drafts of Word documents that are intended to be LW’d is to use Tall Adjusted. I haven’t seen any mismatches yet, and I don’t anticipate seeing any, because Word seems to use the same 72 dpi ruler in either case. Too bad Microsoft’s hotline people didn’t know this. It would’ve save some people a lot of sleuthing.

I’m tempted to use Tall Adjusted and LW fonts in all Word documents, so that the decision of whether to LW the doc can be postponed. Unfortunately, Tall Adjusted seems to slightly improve, but not eliminate, the problem where Best mode printing jams together words that are in LW fonts. This makes Best mode Worst and eliminates the qualitative middle ground between Faster and LW (a middle ground that still exists if the doc is in an IW font). My only guess as to what causes that problem is the facts that FScaleDisable implies FractEnable (Tech Note 92, page 2) and Best mode printing is scaled down from the double-size font if available.

[You would think that a big software corporation such as Microsoft wouldn’t have such problems. I love Excel, and I tolerate Word. David uses WriteNow; there are a lot of advantages to this product. It can handle lots of pages without slowing down; it can control leading, but for some of the editing work which I do, WriteNow’s quirks just make me shake my head and say it is not much better than MacWrite. I was hoping FullWrite may answer my dreams, but I don’t have the megs or the speed to give me what I need. I’m looking into WordPerfect now for my editing needs. I know it won’t be perfect either, but it has some promise. -ed]

More DB and C

Michael D. Sammer

Bartlesville, OK

Please let me compliment you on the fine journal, MacTutor. I enjoy reading it thoroughly, and it is very helpful. I program strictly in C, therefore, I would appreciate it if we could see more articles on C. This would be extremely helpful to me. Specifically, some articles on database management, hashing tables, and details regarding definitions of records in a file would be very helpful. Techniques for manipulating data back and forth from the disk to a data structure, efficient ways to mark the end of a record in a database would be helpful. I am also interested in a scheme for searching the database in regard to a group of different index parameters, ie, a list of all programmer’s who use a Macintosh, the C language, and are between the ages of 30 and 40. Efficient code for this type of a problem would be extremely educational.

Thank you very much for your assistance. Please continue the fine work which you and your staff have delivered.

[Yes, we have been laxed a little in the variety of languages covered in our journal. We have changed our article selection system to something that is hopefully more improved. But I get requests for more Fortran, more Lisp, more Assembly, as well as less on others. Any programmer worth his salt should be able to get information out of any language an application is written in even if it is not his preferred language (Jörg Langowski frequently has something very interesting in his column for me even though reading that Forth code is “reading hard”). I would also like to see more DB columns as well as WP, PS, and DTP. But unfortunately most of the articles I have on hand don’t fit into those categories. All those who have been thinking of writing up some articles with this much meat, get a typing!. -ed]

MyTENew Suggestion

Moshe Foger

Tel Aviv, Israel

I would like to comment about calling ROM directly through pointers published in the last September issue (Mousehole Report, p. 18). In my opinion the code would not work for the following reason:

When Lightspeed calls the MyTENew, it adheres directly to Pascal stack conventions (leaving room for TEHandle and pushing pointers to the two rectangles) and jumps to MyTENew leaving the return address on the stack. However in MyTENew, the compiler automatically inserts “Link A6, #0” which creates a new activation stack needed to access the function’s parameters. The link instruction saves the previous contents of A6 on the stack. The JSR instruction also leaves a return address on the stack; thus when the ROM is activated, it treats the saved A6 and the original return address as the required rectangle pointers and puts the handle in the pointer to ViewRect

To correct it, I would suggest the following in MyTENew:

TEHandle MyTENew(Dest, View)
Rect *Dest, *View;
{
asm{
 UNLK A6;Balance for Link from compilr
 MOVE (A7)+,A3 ;POP return addr. to safe reg.
 JSR  TENew ;Jump to ROM
 JUMP (A3); Return
 }
}

Animated Cursors

David Stoops

Philadelphia, PA

I am an engineering undergraduate at Drexel University, a school considerably devoted to Apple’s University Consortium. I am writing in response to the heated discussion of animated cursors in the March and May ’88 issues. In a rare moment of inspiration, I realized that animating the watch is a chore ideally suited for implementation as a VBLTask. Referring back to the June ’86 MacTutor, which contains an article on screen switching animation using the Vertical Retrace Manager, I wrote the enclosed snipets of Lightspeed Pascal code that seems to do the job.

The routines make use of the ‘acur’ resource, which should be copied along with the necessary ‘CURS’ resources from the Finder into the project resource file. To use these routines, first call InitWatch to get handles to the cursors, then call StartWatch to display the animated watch while your program goes on about its business. A final call to StopWatch removes the task from the vertical retrace queue to halt animation. I find this scheme does a better job of animating the watch than that emploed by the Finder (notice how poorly the watch hands move during lengthy I/O operations under the Finder). Hope this proves useful.

unit WatchGlobals

interface

type
 acur = record
 whichWatch : longint;
 Watch : array[1..8] of CursHandle;
 end;
 acurPtr = ^acur;
 acurHandle = ^acurPtr;

var
 currentWatch : integer;
 WatchList : acurHandle;
 VBL : VBLTask;

implementation

end.


unti WatchUtlities;

interface

uses
 WatchGlobals;

procedure InitWatch;
procedure StartWatch;
procedure StopWatch;

implementation

procedure InitWatch; {Get the watch CursHandles}
 var
 watchcount : integer;
begin
 WatchList := acurHandle(GetResource(‘acur’,0)); 
 {Will crash if ‘acur’ isn’t available’}
 with WatchList^^ do
 begin
 for watchcount := 1 to 8 do
 GetCursor(HiWord(longint(Watch[watchcount])));
 whichWatch := 0;
 end;
end;

procedure AnimateWatch; {Our VBL routine}
begin
 SetUpA5;
 with WatchList^^ do
 begin
 if whichWatch >= 8 then
 whichWatch := 1
 else
 whichWatch := whichWatch + 1;
 SetCursor(Watch[whichWatch]^^);
 end;
 VBL.vblCount :=10;
 RestoreA5;
end;

procedure StartWatch;
 {Install our task in the vertical retrace queue}
var
 err : OSErr;
begin
 with VBL do
 begin
 qType := Integer(vType);
 vblAddr := @AnimateWatch;
 vblCount := 10; {Update watch every 10 ticks}
 vblPhase := 0;
 err := VInstall(@VBL);
 end;
end;

procedure StopWatch;
{remove our task from the vertical retrace queue}
var
 err : OSErr;
begin
 err := VRemove(@VBL);
end;

end.
 

Community Search:
MacTech Search:

Software Updates via MacUpdate

Adobe Illustrator 24.0.3 - Professional...
You can download Adobe Illustrator for Mac as a part of Creative Cloud for only $20.99/month (or $9.99/month if you have also purchased an earlier software version). Adobe Illustrator for Mac is the... Read more
Adobe Dreamweaver CC 2020 20.1 - Build w...
Dreamweaver CC 2020 is available as part of Adobe Creative Cloud for as little as $20.99/month (or $9.99/month if you're a previous Dreamweaver customer). Adobe Dreamweaver CC 2020 allows you to... Read more
Adobe Audition 13.0.3 - Professional pos...
Audition is available as part of Adobe Creative Cloud for as little as $20.99/month (or $9.99/month if you're a previous Audition customer). Adobe Audition empowers you to create and deliver... Read more
Adobe After Effects 17.0.3 - Create prof...
After Effects is available as part of Adobe Creative Cloud for $52.99/month (or $20.99/month for a single app license). The new, more connected After Effects can make the impossible possible. Get... Read more
Audio Hijack 3.6.4 - Record and enhance...
Audio Hijack (was Audio Hijack Pro) drastically changes the way you use audio on your computer, giving you the freedom to listen to audio when you want and how you want. Record and enhance any audio... Read more
Eye Candy 7.2.3.96 - 30 professional Pho...
Eye Candy renders realistic effects that are difficult or impossible to achieve in Photoshop alone, such as Fire, Chrome, and the new Lightning. Effects like Animal Fur, Smoke, and Reptile Skin are... Read more
Notability 4.2.2 - Note-taking and annot...
Notability is a powerful note-taker to annotate documents, sketch ideas, record lectures, take notes and more. It combines, typing, handwriting, audio recording, and photos so you can create notes... Read more
Adobe Acrobat Reader 20.006.20034 - View...
Adobe Acrobat Reader allows users to view PDF documents. You may not know what a PDF file is, but you've probably come across one at some point. PDF files are used by companies and even the IRS to... Read more
Adobe Acrobat DC 20.006.20034 - Powerful...
Acrobat DC is available only as a part of Adobe Creative Cloud, and can only be installed and/or updated through Adobe's Creative Cloud app. Adobe Acrobat DC with Adobe Document Cloud services is... Read more
Day One 4.8 - Maintain a daily journal.
Day One is an easy, great-looking way to use a journal / diary / text-logging application. Day One is well designed and extremely focused to encourage you to write more through quick Menu Bar entry,... Read more

Latest Forum Discussions

See All

Marvel Strike Force introduces new brawl...
FoxNext's squad-based RPG Marvel Strike Force is set to receive some fresh characters from the X-Men and Iron Man series. They'll arrive as part of the game's latest update, which follows a sizable spending boycott on the title due to complaints... | Read more »
Speed Dating for Ghosts is a narrative a...
Speed Dating for Ghosts originally released on Steam back 2018, since then it has received honourable mentions for narrative during the Independent Games Festival. Now it's made its way over to iOS devices where it's available as a premium title... | Read more »
Fast-paced multiplayer title Tennis Star...
Tennis Stars: Ultimate Clash is the latest free-to-play tennis title to hit iOS and Android. It's said to be a fairly casual experience, offering easy-to-learn controls and fast-paced, mobile-friendly matches. [Read more] | Read more »
Super Mecha Champions' latest updat...
Super Mecha Champions' latest update sees the addition of a brand new character called R.E.D. Alongside that, there's news about the current season and a series of Emojis that have been added to the game. [Read more] | Read more »
Isle Escape: The House is an upcoming pu...
Isle Escape: The House is an upcoming puzzle game from Simeon Angelov that's intended to serve as an introduction to a saga they're planning on releasing in an episodic fashion. The first chapter is set to release for both iOS and Android on 29th... | Read more »
Company of Heroes, the classic RTS, is n...
Feral Interactive has finally released their highly anticipated iOS version of the strategy classic Company of Heroes. It's available now for iPad as a premium title and has had various tweaks to ensure that it's optimised for touch controls. [... | Read more »
Mario Kart Tour's Vancouver Tour ha...
With Mario Kart Tour's Valentine's Tour now at an end (suspiciously before Valentine's Day has even arrived), it's now time to move on to the all-new and exciting Vancouver Tour. This time around, the featured drivers are Hiker Wario and Aurora... | Read more »
A new PictoQuest update makes it a much...
PictoQuest is a charming little puzzle game, but it left us a little disappointed. The game just didn’t seem to use screen space effectively, to the point that using the touch controls (as opposed to the default virtual d-pad) could lead to errant... | Read more »
Alley is an atmospheric adventure game a...
Alley is an atmospheric adventure game that sees you playing as a young girl trapped in an inescapable nightmare. Surrounded by her worst fears, every step forward for her is a huge challenge that you'll help guide her through using some simple... | Read more »
Fight monsters and collect heroes in Cry...
From Final Fantasy to Chaos Rings, Japanese roleplaying games have found a large and loyal fanbase on mobile devices. If you’re seeking a more under-the-radar JRPG to escape into, Lionsfilm’s Cryptract could be the one. The game has been around... | Read more »

Price Scanner via MacPrices.net

Apple AirPods are on sale for $30 off today
Amazon has new 2019 Apple AirPods (non-Pro models) on sale today for $30 off MSRP, starting at $129. Shipping is free: – AirPods with Wireless Charging Case: $169 $30 off MSRP – AirPods with Charging... Read more
27″ 3.7GHz 6-Core 5K iMac on sale for $2099,...
B&H Photo has the 2019 27″ 3.7GHz 6-Core 5K iMac in stock today and on sale for $200 off Apple’s MSRP. Overnight shipping is free to many locations in the US: – 27″ 3.7GHz 6-Core 5K iMac: $2099 $... Read more
Save up to $250 on a 12.9″ iPad Pros with the...
Apple has Certified Refurbished 12.9″ iPad Pros available on their online store for up to $250 off the cost of new models. Prices start at $849. Each iPad comes with a standard Apple one-year... Read more
Save up to $220 on 11″ iPad Pros with these r...
Apple has Certified Refurbished 11″ iPad Pros available on their online store for up to $220 off the cost of new models. Prices start at $679. Each iPad comes with a standard Apple one-year warranty... Read more
8-Core 27″ iMac Pro available for $4249, Cert...
Apple has Certified Refurbished 27″ 3.2GHz 8-Core iMac Pros available for $4249 including free shipping. Their price is $750 off the cost of new models. A standard Apple one-year warranty is included... Read more
$749 MacBook Airs continue to be available on...
Amazon has the 2017 13″ 1.8GHz/128GB MacBook Air on sale today for only $749 shipped. That’s $250 off Apple’s original MSRP for this model and the cheapest new MacBook available from any Apple... Read more
HomePods on sale for $204 at Other World Comp...
Other World Computing has discounted, new, Apple HomePods on sale for up to $95 off Apple’s MSRP: – HomePod Space Gray: $207.99 $92 off MSRP – HomePod White: $204.99 $95 off MSRP These are the same... Read more
Get a Certified Refurbished iMac at Apple for...
Apple has Certified Refurbished 2019 21″ & 27″ iMacs available starting at $929 and up to $350 off the cost of new models. Apple’s one-year warranty is standard, shipping is free, and each iMac... Read more
A Look Back At The Top 5 Most Read Stories Of...
FEATURE: 02.21.20 The best of the best are now history and we’re not talking about Super Bowl LIV from earlier this month but rather, coverage from the past year (its second and first full one at... Read more
Apple offers wide range of discounted custom...
Save up to $610 on a custom-configured 21″ or 27″ iMac with these Certified Refurbished models available at Apple. Each iMac features a new outer case, free shipping, and includes Apple’s standard 1-... Read more

Jobs Board

Medical Assistant - *Apple* Valley Clinic -...
…professional, quality care to patients in the ambulatory setting at the M Health Fairview Apple Valley Clinic, located in Apple Valley, MN. Join the **M Health Read more
Geek Squad *Apple* Consultation Professiona...
**756636BR** **Job Title:** Geek Squad Apple Consultation Professional **Job Category:** Store Associates **Store NUmber or Department:** 001053-Arundel Mills-Store Read more
Medical Assistant - *Apple* Valley Clinic -...
…professional, quality care to patients in the ambulatory setting at the M Health Fairview Apple Valley Clinic, located in Apple Valley, MN. Join the **M Health 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
*Apple* Mobility Pro - Best Buy (United Stat...
**744429BR** **Job Title:** Apple Mobility Pro **Job Category:** Store Associates **Store NUmber or Department:** 000574-Garner-Store **Job Description:** At Best Read more
All contents are Copyright 1984-2011 by Xplain Corporation. All rights reserved. Theme designed by Icreon.