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.

 

Community Search:
MacTech Search:

Software Updates via MacUpdate

Microsoft Office 2016 15.31 - Popular pr...
Microsoft Office 2016 - Unmistakably Office, designed for Mac. The new versions of Word, Excel, PowerPoint, Outlook and OneNote provide the best of both worlds for Mac users - the familiar Office... Read more
Spotify 1.0.49.125. - Stream music, crea...
Spotify is a streaming music service that gives you on-demand access to millions of songs. Whether you like driving rock, silky R&B, or grandiose classical music, Spotify's massive catalogue puts... Read more
QuickBooks 16.1.12.1564 R13 - Financial...
QuickBooks helps you manage your business easily and efficiently. Organize your finances all in one place, track money going in and out of your business, and spot areas where you can save. Built for... Read more
Dash 4.0.1 - Instant search and offline...
Dash is an API documentation browser and code snippet manager. Dash helps you store snippets of code, as well as instantly search and browse documentation for almost any API you might use (for a full... Read more
Tinderbox 7.0.0 - Store and organize you...
Tinderbox is a personal content management assistant. It stores your notes, ideas, and plans. It can help you organize and understand them. And Tinderbox helps you share ideas through Web journals... Read more
Apple Remote Desktop Client 3.9 - Client...
Apple Remote Desktop Client is the best way to manage the Mac computers on your network. Distribute software, provide real-time online help to end users, create detailed software and hardware reports... Read more
Sparkle 2.1.1 - $79.99
Sparkle will change your mind if you thought building websites wasn't for you. Sparkle is the intuitive site builder that lets you create sites for your online portfolio, team or band pages, or... Read more
1Password 6.5.5 - Powerful password mana...
1Password is a password manager that uniquely brings you both security and convenience. It is the only program that provides anti-phishing protection and goes beyond password management by adding Web... Read more
WhatRoute 2.0.15 - Geographically trace...
WhatRoute is designed to find the names of all the routers an IP packet passes through on its way from your Mac to a destination host. It also measures the round-trip time from your Mac to the router... Read more
Art Text 3.2.2 - $49.99
Art Text is graphic design software specifically tuned for lettering, typography, text mockups and various artistic text effects. Supplied with a great variety of ready to use styles and materials,... Read more

Tiny Striker: World Football Guide - How...
| Read more »
Good news everyone! Futurama: Worlds of...
Futurama is finding a new home on mobile in TinyCo and Fox Interactive's new game, Futurama: Worlds of Tomorrow. They're really doing it up, bringing on board Futurama creator Matt Groening along with the original cast and writers. TinyCo wants... | Read more »
MUL.MASH.TAB.BA.GAL.GAL (Games)
MUL.MASH.TAB.BA.GAL.GAL 1.0 Device: iOS Universal Category: Games Price: $2.99, Version: 1.0 (iTunes) Description: ENDLESS UPGRADES. CONSTANT DANGER. ANCIENT WISDOM. BOUNCY BALLS. Launch Sale, 40% OFF for a very limited time!!! MUL.... | Read more »
Dungeon Rushers (Games)
Dungeon Rushers 1.0 Device: iOS Universal Category: Games Price: $4.99, Version: 1.0 (iTunes) Description: Dungeon Rushers is a 2D tactical RPG combining dungeon crawler’s gameplay and turn based fights. Manage your team, loot dusty... | Read more »
Blasty Bubs is a colorful Pinball and Br...
QuickByte Games has another arcade treat in the works -- this time it's a mishmash of brick breaking and Pinball mechanics. It's called Blasty Bubs, and it's a top down brickbreaker that has you slinging balls around a board. [Read more] | Read more »
Corsola and Heracross are the new region...
Generation 2 finally launched in Pokémon GO, unleashing a brand new batch of Pokémon into the wild. Even before the update went live people were speculating on how to catch elusive Pokémon like the legendary "dogs", Unknown, and whether or not... | Read more »
The Warlock of Firetop Mountain (Games)
The Warlock of Firetop Mountain 1.0 Device: iOS Universal Category: Games Price: $4.99, Version: 1.0 (iTunes) Description: An epic adventure through a mysterious mountain filled with monsters, magic and mayhem! “...it looks downright... | Read more »
Fantasy MMORPG MU Origin’s receives a hu...
Developer Webzen are looking to take their highly popular fantasy battler MU Origin to the next level this month, with its most ambitious overhaul yet. The latest update introduces the long sought after Server Arena, new treasure dungeons, and much... | Read more »
RPG Djinn Caster (Games)
RPG Djinn Caster 1.0.0 Device: iOS Universal Category: Games Price: $4.99, Version: 1.0.0 (iTunes) Description: SPECIAL PRICE 38% OFF(USD 7.99 -> USD 4.99)!!!A Fantasy Action RPG of far foreign lands! Summon the Djinns and rise to... | Read more »
Alto's Odyssey gets its first trail...
There's finally video evidence of Alto's Odyssey, the follow up to the 2015 App Store hit, Alto's Adventure. It looks just as soothing and atmospheric as Alto's last outing, but this time players will be journeying to the desert. Whereas Alto's... | Read more »

Price Scanner via MacPrices.net

Apple’s New iPad Ads Don’t Address Pro Users’...
Apple launched a new tranche of iPad Pro TV ads last week addressing actual queries and challenges from the Twitterverse, albeit using actors for the visuals. That’s great. As an iPad fan and heavy... Read more
Free Verbum Catholic Bible Study App For iOS
The Verbum mobile app runs on Logos’ powerful Bible software and is an advanced resource for mobile Catholic study. The Verbum app surrounds the Bible with the Tradition. Verbum comes with 15 free... Read more
27-inch Apple iMacs on sale for up to $200 of...
B&H Photo has 27″ Apple iMacs on sale for up to $200 off MSRP, each including free shipping plus NY sales tax only: - 27″ 3.3GHz iMac 5K: $2099.99 $200 off MSRP - 27″ 3.2GHz/1TB Fusion iMac 5K: $... Read more
15-inch 2.2GHz Retina MacBook Pro on sale for...
Amazon has 2015 15″ 2.2GHz Retina MacBook Pros (MJLQ2LL/A) available for $1849.99 including free shipping. Apple charges $1999 for this model, so Amazon’s price is represents a $150 savings. Read more
Apple refurbished iPad Air 2s available start...
Apple has Certified Refurbished iPad Air 2 WiFis available for starting at $319 including free shipping. A standard Apple one-year warranty is included: - 16GB iPad Air 2 WiFi: $319 $60 off original... Read more
Apple refurbished iPad Pros available for up...
Apple has Certified Refurbished 9″ and 12″ Apple iPad Pros available for up to $160 off the cost of new iPads. An Apple one-year warranty is included with each model, and shipping is free: - 32GB 9″... Read more
Apple restocks refurbished 2015 and 2016 13-i...
Apple has Certified Refurbished 2015 and 2016 13″ MacBook Airs available starting at $759. An Apple one-year warranty is included with each MacBook, and shipping is free: - 2016 13″ 1.6GHz/8GB/128GB... Read more
13-inch 2.5GHz MacBook Pro (Apple refurbished...
Apple has Certified Refurbished 13″ 2.5GHz MacBook Pros (MD101LL/A) available for $829, or $270 off original MSRP. Apple’s one-year warranty is standard, and shipping is free: - 13″ 2.5GHz MacBook... Read more
QuickerTek Announces 5TB Apple AC AirPort Tim...
QuickerTek Inc. has announced their new 5TB hard drive upgrade for Apple’s AC AirPort Time Capsule. By customer request, this upgrade also features six external antennas and offers the highest... Read more
Apple Certified Refurbished iMacs available f...
Apple has Certified Refurbished 2015 21″ & 27″ iMacs available for up to $350 off MSRP. Apple’s one-year warranty is standard, and shipping is free. The following models are available: - 21″ 3.... 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
Manager *Apple* Systems Administration - Pu...
Req ID 3315BR Position Title Manager, Apple Systems Administration Job Description The Manager of Apple Systems Administration oversees the administration and Read more
*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
Manager *Apple* Systems Administration - Pu...
Req ID 3315BR Position Title Manager, Apple Systems Administration Job Description The Manager of Apple Systems Administration oversees the administration and Read more
*Apple* Technician - nfrastructure (United S...
Let’s Work Together Apple Technician This position is based in Portland, ME Life at nfrastructure At nfrastructure, we understand that our success results from our Read more
All contents are Copyright 1984-2011 by Xplain Corporation. All rights reserved. Theme designed by Icreon.