TweetFollow Us on Twitter

January 90 - MACINTOSH Q & A

MACINTOSH Q&A

MACINTOSH DEVELOPER TECHNICAL SUPPORT

Q I'm drawing into a large offscreen bitmap (PixMap), but anything drawn outside the 640 by 480 pixel screen area doesn't get written to the PixMap. Why not?

A When you create a new port with OpenPort or OpenCPort the visRgn is initialized to the rectangular region defined by screenBits.bounds (IM I:163). If your port has a large portRect, any drawing will be clipped to the visRgn and you will lose any drawing outside of the screenBits.bounds rectangle.

To correct this set the visRgn of the port to coincide with your port's portRect after creating the port.

Also note that OpenPort initializes the clipRgn to a wide-open rectangular region (-32768, -32768, 32767, 32767). Some operations (i.e.OpenPicture) can fail with this setup, so you should try setting clipRgn to a smaller rectangle.clipRgn to a wide-open rectangular region (-32768, -32768, 32767, 32767). Some operations (i.e.OpenPicture) can fail with this setup, so you should try setting clipRgn to a smaller rectangle.

Q What is Printing Manager error -8133?

A Printing Manager error -8133 occurs when the PostScript interpreter of the LaserWriter (or any other PostScript printer) generates a PostScript error.

A description of the PostScript command that caused the error will be displayed in the status window. This error often occurs when an application is sending PostScript directly to the printer, and that PostScript contains an error. To debug this kind a problem, you should look at the PostScript generated by the driver. To do this, hold down the Command-F key right after clicking okay in the Print dialog. A file named PostScript0 will be created in the current directory.

Q I'm confused about the changes to FPRead in AFP version 2.0. How do I use the NewLine mask?

A The difference between AFP 1.1 and AFP 2.0 as far as the NewLine Mask is concerned is that, in AFP 1.1 the only legal values of Newline Mask are $00 and $FF, whereas in AFP 2.0, all values of Newline Mask are allowed. The Newline Mask is logically ANDed with a copy of each byte read. If the result matches the Newline char, the read terminates. The Newline character is returned as the last byte of data that was read from the fork.

Q How do I implement file range locking?

A HFS doesn't provide for file-range locking. AppleShare has additional structures to implement locking, but there is no way for you to implement locking with HFS. We are working on this limitation.

Q Why does enabling fractional font widths with FractEnable(TRUE) disable Font Substitution?

A When you call FractEnable(TRUE), you are telling the Printing Manager that you always want to use the fractional width information in the FOND resource of a font. This fractional information is specified for a 1 point font, and can be scaled for any desired size. When you tell the Printing Manager to use this width information, the normal font width information (stored in the ROM of the LaserWriter) is ignored. Font Substitution provides the ability to substitute high quality PostScript fonts for fonts that have no PostScript equivalent. For example, a document laid out in Geneva will be printed with Helvetica if Font Substitution is enabled. When this substitution occurs, the Printing Manager makes adjustments to the intercharacter spacing of the line to make the printed Helvetica version match the width of the Geneva version displayed on the screen. When you enable fractional font widths for a document that uses Geneva, the Printing Manager is being told to print Helvetica characters on the printer using fractional widths from the Geneva screen font. If the Printing Manager placed the Helvetica characters using the fractional widths, formatting problems could occur. For example, some of the Helvetica characters may be wider than their Geneva equivalents, causing character collisions. To avoid this problem, the LaserWriter driver disables the Font Substitution option when fractional fonts ar enabled. This way, WYSIWYG is maintained. If you want to use fractional fonts, then you should format your document using fonts that have PostScript versions available on the LaserWriter.

Q Inside Mac says that there is a 3K limit on CopyBits. Is this still true?

A The CopyBits limit is obsolete; there is no longer a 3K limit. The limit depends on the amount of RAM in your system. CopyBits tries to use the stack to do all of the copying. In most cases CopyBits is able to copy entire screen shots at one time. You might run into problems if you don't have enough stack to hold two times the rowBytes of your source, but even in this case CopyBits will attempt to find the memory it needs.

Q How do I order an MCP card and software? What do I get when I order it?

A You can order the Macintosh Coprocessor Platform (MCP) card and software through Apple Software Licensing. The card comes with the MCP platform and software which contains the appropriate libraries and header files. On the card is the 68000, ROM (256K), RAM (512K), and the NuBus Logic to drive the card in both master and slave modes. There is also blank space on the board, left there for your communications hardware. Basic documentation is also included.

Q Can I get a list of all board IDs?

A No-that information is confidential. MacDTS registers board ID and functional sResource equates so developers don't use equates that are already in use, but they can't distribute the list because the database contains information on unreleased products.

However, even if the list could be distributed, any program that depended on the information in it would be obsolete as soon as a new board came out.

It is recommended you use the Slot Manager's ability to find certain cards or functions. That way, you only need to write your code once, and it will work with newer boards. That's why QuickDraw can find video cards years after it was frozen in ROM. It does so by calling the Slot Manager and looking for boards that perform the QuickDraw compatible video function.

Q How do you catch a penguin?

A Before we answer that question, perhaps a little biology is in order. Penguins, by necessity, must be both water and air tight, or they would freeze their little bergies off in the Antarctic seas. Well, that's a problem if you happen to be warm blooded, because there's really no way to sweat (since penguins don't have hands, they were never able to invent Gor-tex®). To handle this problem, they have capillaries in their feet that swell when warm and act as a radiator.

So, to catch a penguin, all you have to do is chase it across the ice. The running will heat the penguin, which in turn, will heat the penguin's feet. Once the penguin gets hot enough, he will stick to the ice (what scientists call "the tongue to the sled effect"). All you have to do then is walk over and pick them up.

PLEASE NOTE: When picking a penguin up we can't overemphasize how critical it is to use slightly warm water to thaw the feet first. Penguin podiatrists are expensive, and very hard to find.

Q I'd like to write James Brown in jail. Where do I write to?

A You can write the Godfather of Soul at:
James Brown, prisoner ID #155413
Broad Rivers Correctional Institute
4460 Broad Rivers Road
Columbia, SC 29210

Brown is serving concurrent six year and six year & 3 month terms for a wild, two-state car chase which happened September 24, 1988. He won't be eligible for parole until 1992.

 
AAPL
$111.78
Apple Inc.
-0.87
MSFT
$47.66
Microsoft Corpora
+0.14
GOOG
$516.35
Google Inc.
+5.25

MacTech Search:
Community Search:

Software Updates via MacUpdate

NeoOffice 2014.6 - Mac-tailored, OpenOff...
NeoOffice is a complete office suite for OS X. With NeoOffice, users can view, edit, and save OpenOffice documents, PDF files, and most Microsoft Word, Excel, and PowerPoint documents. NeoOffice 3.x... Read more
LibreOffice 4.3.5.2 - Free Open Source o...
LibreOffice is an office suite (word processor, spreadsheet, presentations, drawing tool) compatible with other major office suites. The Document Foundation is coordinating development and... Read more
CleanApp 5.0.0 Beta 5 - Application dein...
CleanApp is an application deinstaller and archiver.... Your hard drive gets fuller day by day, but do you know why? CleanApp 5 provides you with insights how to reclaim disk space. There are... Read more
Monolingual 1.6.2 - Remove unwanted OS X...
Monolingual is a program for removing unnecesary language resources from OS X, in order to reclaim several hundred megabytes of disk space. It requires a 64-bit capable Intel-based Mac and at least... Read more
NetShade 6.1 - Browse privately using an...
NetShade is an Internet security tool that conceals your IP address on the web. NetShade routes your Web connection through either a public anonymous proxy server, or one of NetShade's own dedicated... Read more
calibre 2.13 - Complete e-library manage...
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
Mellel 3.3.7 - Powerful word processor w...
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
ScreenFlow 5.0.1 - Create screen recordi...
Save 10% with the exclusive MacUpdate coupon code: AFMacUpdate10 Buy now! ScreenFlow is powerful, easy-to-use screencasting software for the Mac. With ScreenFlow you can record the contents of your... Read more
Simon 4.0 - Monitor changes and crashes...
Simon monitors websites and alerts you of crashes and changes. Select pages to monitor, choose your alert options, and customize your settings. Simon does the rest. Keep a watchful eye on your... Read more
BBEdit 11.0.2 - Powerful text and HTML e...
BBEdit is the leading professional HTML and text editor for the Mac. Specifically crafted in response to the needs of Web authors and software developers, this award-winning product provides a... Read more

Latest Forum Discussions

See All

Galaxy Trucker Pocket (Games)
Galaxy Trucker Pocket 1.0.8 Device: iOS iPhone Category: Games Price: $2.99, Version: 1.0.8 (iTunes) Description: Galaxy Truckers Wanted!================================================================= (5/5) "Galaxy Trucker isn’t... | Read more »
Make your own Tribez Figures (and More)...
Make your own Tribez Figures (and More) with Toyze Posted by Jessica Fisher on December 19th, 2014 [ permalink ] Universal App - Designed for iPhone and iPad | Read more »
So Many Holiday iOS Sales Oh My Goodness...
The holiday season is in full-swing, which means a whole lot of iOS apps and games are going on sale. A bunch already have, in fact. Naturally this means we’re putting together a hand-picked list of the best discounts and sales we can find in order... | Read more »
It’s Bird vs. Bird in the New PvP Mode f...
It’s Bird vs. Bird in the New PvP Mode for Angry Birds Epic Posted by Jessica Fisher on December 19th, 2014 [ permalink ] Universal App - Designed for iPhone and iPad | Read more »
Telltale Games and Mojang Announce Minec...
Telltale Games and Mojang Announce Minecraft: Story Mode – A Telltale Games Series Posted by Jessica Fisher on December 19th, 2014 [ permalink ] | Read more »
WarChest and Splash Damage Annouce Their...
WarChest and Splash Damage Annouce Their New Game: Tempo Posted by Jessica Fisher on December 19th, 2014 [ permalink ] WarChest Ltd and Splash Damage Ltd are teaming up again to work | Read more »
BulkyPix Celebrates its 6th Anniversary...
BulkyPix Celebrates its 6th Anniversary with a Bunch of Free Games Posted by Jessica Fisher on December 19th, 2014 [ permalink ] BulkyPix has | Read more »
Indulge in Japanese cuisine in Cooking F...
Indulge in Japanese cuisine in Cooking Fever’s new sushi-themed update Posted by Simon Reed on December 19th, 2014 [ permalink ] Lithuanian developer Nordcurrent has yet again updated its restaurant simulat | Read more »
Badland Daydream Level Pack Arrives to C...
Badland Daydream Level Pack Arrives to Celebrate 20 Million Downloads Posted by Ellis Spice on December 19th, 2014 [ permalink ] | Read more »
Far Cry 4, Assassin’s Creed Unity, Desti...
Far Cry 4, Assassin’s Creed Unity, Destiny, and Beyond – AppSpy Takes a Look at AAA Companion Apps Posted by Rob Rich on December 19th, 2014 [ permalink ] These day | Read more »

Price Scanner via MacPrices.net

Holiday sale: 13-inch 128GB MacBook Air for $...
 Best Buy has the 2014 13-inch 1.4GHz 128GB MacBook Air on sale for $849.99, or $150 off MSRP, on their online store. Choose free home shipping or free local store pickup (if available). Price valid... Read more
13-inch 2.6GHz Retina MacBook Pro on sale for...
Best Buy has lowered their price on the 2014 13″ 2.6GHz/128GB Retina MacBook Pro to $1149.99 on their online store for a limited time. That’s $150 off MSRP and the lowest price available for this... Read more
Kodak Returns to CES With New Consumer Produ...
Former photography colossus Kodak is returning to CES for the first time in three years where the Kodak booth (#21818 South Hall 1) will showcase a wide range of innovative, imaging-related products... Read more
Invaluable Launches New Eponymously -Named A...
Invaluable, the world’s largest online live auction marketplace, hhas announced the official launch of the Invaluable app for iPad, now available for download in the iTunes App Store. Invaluable... Read more
IDC Reveals Worldwide Mobile Enterprise Appli...
International Data Corporation (IDC) last week hosted the IDC FutureScape: Worldwide Mobile Enterprise Applications and Solutions 2015 Predictions Web conference. The session provided organizations... Read more
Hello Vino Wine App Launches “Safe Ride Home”...
Hello Vino has announced addition of a new “Get a Safe Ride Home” feature in its Food & Drink app with a direct connection to Uber, the technology platform that connects users with rides. The... Read more
DEVON-technologies Releases DEVONthink To Go...
Coeur d’Alene, Idaho based DEVON-technologies, LLC has updated DEVONthink To Go, its mobile companion to DEVONthink, to version 1.5. The update includes an iOS 8 extension, compatibility with the... Read more
The Apple Store offering free next-day shippi...
The Apple Store is now offering free next-day shipping on all in stock items if ordered before 12/23/14 at 10:00am PT. Local store pickup is also available within an hour of ordering for any in stock... Read more
It’s 1992 Again At Sony Pictures, Except For...
Techcrunch’s John Biggs interviewed a Sony Pictures Entertainment (SPE) employee, who quite understandably wished to remain anonymous, regarding post-hack conditions in SPE’s L.A office, explaining “... Read more
OtterBox Defender Series Case For iPad mini 3...
With their innovative Touch ID technology and ultrathin profile, the latest tranche of Apple iPads are more desirable than ever, and OtterBox has just announced the Defender Series custom-engineered... Read more

Jobs Board

*Apple* Store Leader Program (US) - Apple, I...
…Summary Learn and grow as you explore the art of leadership at the Apple Store. You'll master our retail business inside and out through training, hands-on experience, Read more
Project Manager, *Apple* Financial Services...
**Job Summary** Apple Financial Services (AFS) offers consumers, businesses and educational institutions ways to finance Apple purchases. We work with national and Read more
*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
*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
*Apple* Retail - Multiple Positions (US) - A...
Job Description: Sales Specialist - Retail Customer Service and Sales Transform Apple Store visitors into loyal Apple customers. When customers enter the store, Read more
All contents are Copyright 1984-2011 by Xplain Corporation. All rights reserved. Theme designed by Icreon.