TweetFollow Us on Twitter

May 00 Bookshelf

Volume Number: 16 (2000)
Issue Number: 5
Column Tag: Programmer's Bookshelf

REALbasic: The Definitive Guide

By Paul E. Sevinç, Switzerland

Introduction

REALbasic is an integrated development environment (IDE) from REAL Software, Inc. [3]. In the last couple of months, REALbasic was the topic of several MacTech articles written by Erick Tejkowski [4, 5, 6, 7]. For an overview of REALbasic, please refer to Erick's second article [5] or the REALbasic home page [3].

Written by Matt Neuburg and published by O'Reilly, REALbasic: The Definitive Guide [2] describes the higher edition of REALbasic version 2. But as targeting Windows is not covered, most of the text applies to the standard edition as well. Matt Neuburg is a past editor of MacTech, by the way, but this shall have no influence on my review.

The book is divided into three parts of about 210 pages each: Fundamentals, User Interface, and Reaching Out. Please note that unlike the first two parts, I haven't read the last part in its entirety (i.e., in number of pages, I have read about a third). Note further that I have never dealt with REALbasic prior to reading this book.

Fundamentals

Chapter 1, The Workspace, and chapter 2, The Basic Language, introduce the REALbasic IDE and the REALbasic language, respectively. The explanations of the language constructs might be too terse for novices at programming. For everybody else, however, the concise writing allows for a quick transition to REALbasic without being boring or superficial. What irritated me a little at the beginning is that some names are capitalized differently in the code examples and in the main text. (REALbasic is case insensitive.) And Neuburg's definition of "side effect" is somewhat sloppy. Nevertheless, after two chapters only, I gained the impression that he is a pretty good teacher and writer.

Chapter 3, Objects, Classes, and Instances, and chapter 4, Subclasses, introduce object orientation in the context of REALbasic. These two chapters risk to frustrate novices at object-oriented programming (OOP): while a lot of concepts are explained in a very intuitive manner, non-trivial examples in which OOP unleashes its power are lacking. Beginners must be aware of this. After all, it is only natural that there are trade-offs when a book treats a language, a paradigm, an IDE, and a framework. Alas, Neuburg's treatment of interfaces may leave a wrong impression, namely that they are primarily a means of fixing class relationships or of supporting so-called binding. Yet every experienced Java programmer will confirm that single implementation inheritance with multiple interface inheritance allows for very clean and powerful designs.

Chapter 5, Datatypes, discusses elementary REALbasic data types, such as booleans, strings, and dates, as well as two classes that support low-level memory handling and threading, respectively. In the section on numbers, Neuburg uses the terms "binary", "octal", and "hexadecimal" without explaining them anywhere in the book. This (and what I said about novices in the preceding two paragraphs) leads me to the following question: Who is the target readership of the book in the first place? (On the cover it says "Macintosh programmers at all levels" and in the preface "this book does not teach you to program the Macintosh".) If it includes beginners, some sections of the book need to be elaborated. If not, some sections are not necessary (e.g., on what flow control is).

Chapter 6, Menus, shows how menus and menu items are created, how they can be enabled and disabled, how the application reacts to a menu item being chosen, etc. I particularly liked that it includes a section on dynamic menus with typical examples (Font menu and Windows menu). And chapter 7, The Architecture of an Application, gives some tips concerning REALbasic-based applications. It does not discuss architectural issues in general, however. (See, for instance, Buschmann et al. [1] for more on this topic.)

Chapter 8, Debugging and Building, concludes the first part. It explains how to read compile-error descriptions, REALbasic's exception handling, how to use the debugger, and the application build. After the first three pages in the section on exceptions, I was going to say that Neuburg chose a poor first example to illustrate them. Because it catches an exception caused by an error that can be fixed during development and that does not depend on the time & space in which the final application runs (e.g., on a computer with an unreliable hard drive). However, I then saw that four of REALbasic's five (or six) RuntimeException subclasses are about such errors, so that Neuburg isn't the one to be blamed. Nevertheless, he should have said more than just "Most of the time, you'll probably try to eliminate runtime errors from your program in advance" [2, p. 206].

User Interface

The first ten chapters of the second part cover graphical user interface (GUI) elements, the remaining two discuss the keyboard and the mouse. As is stated in the preface, the Human Interface Guidelines are not a topic of the book. Many different GUI elements are explained, such as windows, tab panels, sliders, etc. In addition to the default classes that REALbasic provides, Neuburg also presents subclasses and helper classes developed by him and others. Furthermore, a few advanced examples are also included. What I liked a lot is that Neuburg warns against bugs or limitations he encountered and tells the reader what to do about them.

To cut a long story short, this part is likely to contain valuable information about the GUI element the reader would like to employ. And in case the GUI element is not available or does not behave as desired, several ways to create a custom GUI element are shown as well.

Reaching Out

Chapter 21, Files, covers many file-related issues: creating and deleting files, navigating the file system, reading and writing the data or resource fork, preferences and temporary files, etc. The concept of file type and file creator is briefly explained, the difference between data fork and resource fork not really. Overall, however, the level of detail and the examples are very good. Particularly cool is that some of the example tasks - copying, for instance - are not only solved with REALbasic classes, but also with AppleScript scripts imported into the REALbasic project.

Chapter 29, Printing, is rather short, which-considering its importance-is a pity. Apparently that's because "Support for printing in REALbasic is rudimentary" [2, p. 555]. So, after a few tips, the reader is left to her own experimentation.

Chapter 31, Apple Events and AppleScript, first briefly introduces Apple events and AppleScript and then discusses Apple events and the REALbasic classes that support them in quite some detail. This chapter teaches how to send and receive events in order to make an application scriptable, and how to execute scripts from within an application.

To give you an idea of what other topics the third part includes, here are the titles of the remaining chapters (that I haven't read): Databases, Clipboard, Drag-and-Drop, Time, Sound, Movies, Game Animation, TCP/IP Communications, and Language Extensions.

Conclusion

Despite some shortcomings, Matt Neuburg's excellent writing and its broad range of topics make REALbasic: The Definitive Guide an easy-to-understand and very useful book for programmers entering the world of REALbasic.

In my opinion, the book is best suited for programmers with experience in OOP. Other programmers should do just fine, too, even though their perception of object orientation will probably be somewhat limited. For a complete novice, however, this book alone is not enough to get started.

What is clearly missing is an example application (e.g., a simple text editor) where different aspects such as menus, windows, files, printing, etc. could have been shown side by side. So feel free to develop such an application and to write about it in MacTech!

References

  1. F. Buschmann, R. Meunier, H. Rohnert, P. Sommerlad, and M. Stal. Pattern-Oriented Software Architecture: A System of Patterns. John Wiley & Sons, Chicester, 1996.
  2. M. Neuburg. REALbasic: The Definitive Guide. O'Reilly, Sebastopol, 1999.
  3. REAL Software. REALbasic. Home Page. Located at <http://www.realbasic.com/>.
  4. E.J. Tejkowski. "REALbasic Plugin Programming". MacTech Magazine, Vol. 15, No. 10, pp. 12-21, October 1999.
  5. E.J. Tejkowski. "REALbasic". MacTech Magazine, Vol. 15, No. 11, pp. 46-57, November 1999.
  6. E.J. Tejkowski. "Speech and REALbasic". MacTech Magazine, Vol. 15, No. 12, pp. 46-49, December 1999.
  7. E.J. Tejkowski. "Networking with REALbasic". MacTech Magazine, Vol. 16, No. 2, pp. 13-19, February 2000

Paul recently earned a Dipl. El.-Ing. ETH degree, the Master's degree in electrical engineering from the Swiss Federal Institute of Technology Zurich (ETHZ). Now he hopes to finally find the time to finish Aho et al.'s Dragon Book. You can inquire on his progress at paul.sevinc@ubilab.org.

 

Community Search:
MacTech Search:

Software Updates via MacUpdate

Things 3.1.3 - Elegant personal task man...
Things is a task management solution that helps to organize your tasks in an elegant and intuitive way. Things combines powerful features with simplicity through the use of tags and its intelligent... Read more
BetterTouchTool 2.292 - Customize Multi-...
BetterTouchTool adds many new, fully customizable gestures to the Magic Mouse, Multi-Touch MacBook trackpad, and Magic Trackpad. These gestures are customizable: Magic Mouse: Pinch in / out (zoom... Read more
Bookends 12.8.3 - Reference management a...
Bookends is a full-featured bibliography/reference and information-management system for students and professionals. Bookends uses the cloud to sync reference libraries on all the Macs you use.... Read more
Mellel 3.5.5 - The word processor for sc...
Mellel is the leading word processor for OS X and has been widely considered the industry standard since its inception. Mellel focuses on writers and scholars for technical writing and multilingual... Read more
Mellel 3.5.5 - The word processor for sc...
Mellel is the leading word processor for OS X and has been widely considered the industry standard since its inception. Mellel focuses on writers and scholars for technical writing and multilingual... Read more
Bookends 12.8.3 - Reference management a...
Bookends is a full-featured bibliography/reference and information-management system for students and professionals. Bookends uses the cloud to sync reference libraries on all the Macs you use.... Read more
Carbon Copy Cloner 4.1.18 - Easy-to-use...
Carbon Copy Cloner backups are better than ordinary backups. Suppose the unthinkable happens while you're under deadline to finish a project: your Mac is unresponsive and all you hear is an ominous,... Read more
Hopper Disassembler 4.2.14- - Binary dis...
Hopper Disassembler is a binary disassembler, decompiler, and debugger for 32- and 64-bit executables. It will let you disassemble any binary you want, and provide you all the information about its... Read more
BetterTouchTool 2.291 - Customize Multi-...
BetterTouchTool adds many new, fully customizable gestures to the Magic Mouse, Multi-Touch MacBook trackpad, and Magic Trackpad. These gestures are customizable: Magic Mouse: Pinch in / out (zoom... Read more
Sound Studio 4.8.11 - Robust audio recor...
Sound Studio lets you easily record and professionally edit audio on your Mac. Easily rip vinyls and digitize cassette tapes, or record lectures and voice memos. Prepare for live shows with live... Read more

You can now apply to be Clash of Clans...
Earlier this month, word got out that the Builder, the trusty handiman who tirelessly built every single building inevery singleClash of Clansbase had called it quits. Sick of seeing his work destroyed endless, the Builder has set out for our world... | Read more »
Meshi Quest beginner's guide - how...
Meshi Quest is Square Enix's newest free-to-play release, and it's a real charmer. You start off as the head of a sushi restaurant, upgrading your food and equipment as you serve visitors heaping helpings of your delicious meals. As you progress,... | Read more »
BUST-A-MOVE JOURNEY (Games)
BUST-A-MOVE JOURNEY 1.0.0 Device: iOS Universal Category: Games Price: $4.99, Version: 1.0.0 (iTunes) Description: BUST-A-MOVE Features:- Shoot bubbles and match 3 or more bubbles of the same color to make them pop!- Complete your... | Read more »
The best card combos in Clash Royale
Clash Royale is all about building a deck of units that synergise well. To help you get off to a flying start, we've put together a list of unit combinations that are incredibly effective. Looking for some choice 2v2 combos? Check out our guide. [... | Read more »
The best 2v2 card combos in Clash Royale
2v2 is making it's grand return toClash Royalequite soon. 2v2 has quickly become one of the game's most popular gameplay modes, though they still have yet to make it a permanent fixture in the game. 2v2 is exciting and adds some new flavor to... | Read more »
The best games we played this week - Aug...
Another busy week has come to a close. We played a lot of excellent games this week and now it's time to look back and reflect on some our favorites. Here are our picks for the week of August 18. [Read more] | Read more »
War Wings beginner's guide - how to...
War Wings is the newest project from well-established game maker Miniclip. It's a World War II aerial dogfighting game with loads of different airplane models to unlock and battle. The game offers plenty of single player and multiplayer action. We... | Read more »
How to win every 2v2 battle in Clash Roy...
2v2 is coming back to Clash Royale in a big way. Although it's only been available for temporary periods of time, 2v2 has seen a hugely positive fan response, with players clamoring for more team-based gameplay. Soon we'll get yet another taste of... | Read more »
Roll to Win with Game of Dice’s new upda...
Joycity’s hit Game of Dice gets a big new update this week, introducing new maps, mechanics, and even costumes. The update sets players loose on an exciting new map, The Cursed Tower, that allows folks to use special Runes mid-match. If you feel... | Read more »
Bottom of the 9th (Games)
Bottom of the 9th 1.0.1 Device: iOS iPhone Category: Games Price: $4.99, Version: 1.0.1 (iTunes) Description: Play the most exciting moment of baseball in this fast-paced dice and card game! | Read more »

Price Scanner via MacPrices.net

Free Instant Translator 2.0 App For iOS Relea...
Mobile application development company, Neoappz has announced the release and immediate availability of Instant Translator 2.0 for iOS devices. Instant Translator is a user-friendly application which... Read more
2017 15-inch MacBook Pros on sale for $200 of...
Amazon has 2017 15″ MacBook Pros on sale for $200 off MSRP. Shipping is free: – 15″ 2.8GHz MacBook Pro Space Gray: $2199.99, $200 off MSRP – 15″ 2.8GHz MacBook Pro Silver: $2296, $103 off MSRP – 15″... Read more
Apple’s 2017 Back to School Promotion: Free B...
Purchase a new Mac using Apple’s Education discount, and take up to $300 off MSRP. All teachers, students, and staff of any educational institution qualify for the discount. Shipping is free. As part... Read more
Clearance 2016 12-inch Retina MacBooks, Apple...
Apple has Certified Refurbished 2016 12″ Retina MacBooks available starting at $1019. Apple will include a standard one-year warranty with each MacBook, and shipping is free. The following... Read more
15-inch 2.2GHz Retina MacBook Pro, Apple refu...
Apple has Certified Refurbished 2015 15″ 2.2GHz Retina MacBook Pros available for $1699. That’s $300 off MSRP, and it’s the lowest price available for a 15″ MacBook Pro. An Apple one-year warranty is... Read more
Apple refurbished Mac minis available startin...
Apple has Certified Refurbished Mac minis available starting at $419. Apple’s one-year warranty is included with each mini, and shipping is free: – 1.4GHz Mac mini: $419 $80 off MSRP – 2.6GHz Mac... Read more
Apple refurbished iPad Pros available startin...
Apple has Certified Refurbished 2016 12″ WiFi iPad Pros available starting at $589. An Apple one-year warranty is included with each model, and shipping is free: – 32GB 12″ iPad Pro WiFi: $589... Read more
Weekend sale: 13-inch MacBook Pros for up to...
Amazon has new 2017 13″ MacBook Pros on sale today for up to $200 off MSRP, each including free shipping: – 13″ 3.1GHz/256GB Space Gray MacBook Pro (MPXV2LL/A): $1599.99 $200 off MSRP – 13″ 3.1GHz/... Read more
Back To School With The Edge Desk All-in-one...
Back to school is just around the corner, and the ergonomically correct Edge Desk all-in-one portable kneeling desk is ideal for students living in dorms and small apartments, Edge Desk features:... Read more
Norton Core Secure Wi-Fi Router Now Available...
First introduced at the 2017 Consumer Electronics Show (CES), Norton Core, a secure, high-performance Wi-Fi router, fundamentally changed the concept of Wi-Fi routers by making security the primary... Read more

Jobs Board

*Apple* Retail - Multiple Positions - Apple,...
Job Description: Sales Specialist - Retail Customer Service and Sales Transform Apple Store visitors into loyal Apple customers. When customers enter the store, Read more
Development Operations and Site Reliability E...
Development Operations and Site Reliability Engineer, Apple Payment Gateway Job Number: 57572631 Santa Clara Valley, California, United States Posted: Jul. 27, 2017 Read more
Frameworks Engineering Manager, *Apple* Wat...
Frameworks Engineering Manager, Apple Watch Job Number: 41632321 Santa Clara Valley, California, United States Posted: Jun. 15, 2017 Weekly Hours: 40.00 Job Summary Read more
*Apple* Solutions Consultant - Apple Inc. (U...
…about helping others on a team while also delighting customers? As an Apple Solutions Consultant (ASC), you will discover customers needs and help connect them Read more
*Apple* Solutions Consultant - Apple Inc. (U...
Job Summary As an Apple Solutions Consultant, you'll be the link between our future customers and our products. You'll showcase your entrepreneurial spirit as you Read more
All contents are Copyright 1984-2011 by Xplain Corporation. All rights reserved. Theme designed by Icreon.