TweetFollow Us on Twitter

Jun 94 Top 10
Volume Number:10
Issue Number:6
Column Tag:Think Top 10

Think Top 10

By Scott Shurr, Symantec Technical Support, Symantec Corp.

This is a monthly column written by Symantec’s Technical Support Engineers intended to provide you with information on Symantec products. Each month we cover either a specific application of tools or a “Q&A” list.

Q. I changed a library in my project, and now I get link errors that say __noMethod and __noObject are undefined. Why?

A. These 2 functions are called from oopsDebug or oopsDebug++. The libraries call __noMethod when a message lookup fails, and __noObject when a message is sent to a bad object pointer or handle. These functions, declared in oops.h, allow your application to catch potentially fatal errors, and take the appropriate action. You must provide the code which defines the functions. For example:


/* 1 */
void __noMethod(void) { printf("Method lookup failed\n"); exit(1); }

Q. My project is using classes based on Pascal Objects. Are there any advantages to changing it to use pointer based objects?

A. Yes. Pointer based objects require less special treatment. Since they are not handles, they will never move, and you don’t need to worry about locking and unlocking them. Also, you will no longer need to keep track of when you are using a pointer, and when you are using a handle, so dereferencing becomes less of an issue. Another reason is that Pascal objects are not part of the C++ standard, which is a problem if you want to port your code to another platform.

Q. What are the advantages of moving the application I wrote with TCL 1.1.3 up to TCL 2.0?

A. First, TCL 2.0 uses pointer based objects instead of Pascal Objects. You can now use all of the nice features of C++ like multiple inheritance. Also, there are new classes that make it relatively easy to add features like scriptability to your application.

Q. I updated to C++ 7.0. Now I am getting warnings like the following (in this case while precompiling TCL #includes.cpp): File <Exceptions.h>; Line 71; While compiling <TCL #includes.cp> Warning: unrecognized pragma. What’s the problem?

A. The behavior of the 7.0 C++ translator in response to unknown pragmas has changed. In old versions, unrecognized pragmas were simply ignored. Now, they are flagged by warnings. The guilty pragma: #pragma nooptimize(CatchException) was unrecognized in C++ 6.0.x, but the compiler didn’t complain. It is safe to ignore the warning. You can disable the warnings, if you like, by going to Edit:Options:Symantec C++...:Warning Messages and unchecking the Unrecognized pragma box.

Q. I had to change some of my #pragma statements in order to fix link errors for my templates after I upgraded to C++ 7.0. For instance, the 6.0.x Vector Project gave me errors like this: undefined: operator <<(ostream&,vector<char>&) (main.cp) Why did this change?

A. Templates at 6.0.x could cause problems because the response to #pragma template TemplateName<type> was to instantiate every method in the TemplateName class. The expansion of large templates could result in code that would exceed the 32K segment size, and there was no way short of redesigning the project to get around it. In the 6.0.x Vector Project, for example, the statement: #pragma template vector<char> in the file vector<char>.cp caused the vector class for char, as well as the << operator and other methods, to be instantiated. In 7.0, you have to tell the compiler exactly where to instantiate the class and each of its methods. That’s why you need the line: #pragma template operator <<(ostream&, vector<char>&) to fix the link error. The increased control afforded by this change solves the segment size problem by allowing you to instantiate the class and its methods in different files in different segments. In general, the changes give the programmer more flexibility in generating the template instantiations.

Q. I have several projects that share the same resources. Is there any way to avoid having to edit the <ProjectName>.rsrc for each project whenever I want to change the resources?

A. Yes. The Resource Copier translator exists for that purpose. What it does is takes the contents of each .rsrc file in the project window and, when you bring the project up to date, updates the <ProjectName>.rsrc by copying any new or changed resources into that file. To share some resources between ProjectA and ProjectB, you could create a SharedResources.rsrc file, and add that file to each project. When you bring ProjectA up to date, the resources in SharedResources.rsrc will be copied into ProjectA.rsrc. ProjectB will work the same way. When you want to change the resources, run ResEdit on SharedResources.rsrc instead of ProjectA.rsrc or ProjectB.rsrc.

Q. Can I mix .rsrc and .r files in the same project?

A. Certainly. THINK Rez is just like the Resource Copier in its treatment of the <ProjectName>.rsrc file. The changes to any .r file in a project will be copied into the <ProjectName>.rsrc file when you bring the project up to date. It is okay to mix .r and .rsrc files in the same project, as long as the resource types and numbers are unique.

Q. Are there any online sources for patches?

A. Yes. Here is the list:

AppleLink: To find patches, follow the path: Support:Third Parties:Third Parties (P-Z):Symantec Solutions:Software Updates and Solutions:Think C/Symantec C++ Updates

CompuServe: To find patches: GO SYMDEVTOOLS, and BROWSE through library 2 for C patches, library 11 for C++ patches.

Symantec BBS: Call 503-484-6669 @9600 or 503-484-6699 @2400.

America Online: To find patches: keyword ‘Symantec’, click on Software Library

Internet (FTP): anonymous ftp to sumex-aim.stanford.edu. The path to patches is info-mac/lang

Q. I can’t get the TPM to automatically start up THINK Reference, even though I put “THINK Reference alias” into the Tools folder. Why doesn’t this work?

A. Items in the Tools folder should be the exact name of the program you wish to use. You must edit “THINK Reference alias” to be “THINK Reference”. To use another program like ToolServer, put in “ToolServer”, not “ToolServer alias.”

Q. The sizeof operator doesn’t work. The following statement prints 0: printf("%d\n",sizeof(int));

A. The problem is that sizeof returns a long, not an int. This works: printf("%ld\n",sizeof(int));

 

Community Search:
MacTech Search:

Software Updates via MacUpdate

Tunnelblick 3.6.7beta02 - GUI for OpenVP...
Tunnelblick is a free, open source graphic user interface for OpenVPN on OS X. It provides easy control of OpenVPN client and/or server connections. It comes as a ready-to-use application with all... Read more
jAlbum Pro 13.4 - Organize your digital...
jAlbum Pro has all the features you love in jAlbum, but comes with a commercial license. You can create gorgeous custom photo galleries for the Web without writing a line of code! Beginner-friendly... Read more
calibre 2.65.1 - 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
jAlbum 13.4 - Create custom photo galler...
With jAlbum, you can create gorgeous custom photo galleries for the Web without writing a line of code! Beginner-friendly, with pro results - Simply drag and drop photos into groups, choose a design... Read more
Backblaze 4.2.0.966 - Online backup serv...
Backblaze is an online backup service designed from the ground-up for the Mac. With unlimited storage available for $5 per month, as well as a free 15-day trial, peace of mind is within reach with... Read more
Backblaze 4.2.0.966 - Online backup serv...
Backblaze is an online backup service designed from the ground-up for the Mac. With unlimited storage available for $5 per month, as well as a free 15-day trial, peace of mind is within reach with... Read more
Tunnelblick 3.6.7beta02 - GUI for OpenVP...
Tunnelblick is a free, open source graphic user interface for OpenVPN on OS X. It provides easy control of OpenVPN client and/or server connections. It comes as a ready-to-use application with all... Read more
calibre 2.65.1 - 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
jAlbum Pro 13.4 - Organize your digital...
jAlbum Pro has all the features you love in jAlbum, but comes with a commercial license. You can create gorgeous custom photo galleries for the Web without writing a line of code! Beginner-friendly... Read more
jAlbum 13.4 - Create custom photo galler...
With jAlbum, you can create gorgeous custom photo galleries for the Web without writing a line of code! Beginner-friendly, with pro results - Simply drag and drop photos into groups, choose a design... Read more

Clean Text (Productivity)
Clean Text 1.0 Device: iOS Universal Category: Productivity Price: $3.99, Version: 1.0 (iTunes) Description: | Read more »
Gemini - A Journey of Two Stars (Games)
Gemini - A Journey of Two Stars 1.0.1 Device: iOS Universal Category: Games Price: $2.99, Version: 1.0.1 (iTunes) Description: *** SPECIAL LAUNCH SALE: $2.99 (25% off) *** "A mesmerizing and unexpectedly emotional journey." -- Los... | Read more »
How to get four NFL superstars for your...
Even though you're probably well on your way to building a top notch squad for the new season in Madden NFL Mobile, let's say you could beef it up by adding Rob Gronkowski, Antonio Brown, Von Miller, and Todd Gurley to your roster. That's... | Read more »
Cartoon Network Superstar Soccer: Goal!!...
Cartoon Network Superstar Soccer: Goal!!! – Multiplayer Sports Game Starring Your Favorite Characters 1.0 Device: iOS Universal Category: Games Price: $2.99, Version: 1.0 (iTunes) Description: Become a soccer superstar with your... | Read more »
NFL Huddle: What's new in Topps NFL...
Can you smell that? It's the scent of pigskin in the air, which either means that cliches be damned, pigs are flying in your neck of the woods, or the new NFL season is right around the corner. [Read more] | Read more »
FarmVille: Tropic Escape tips, tricks, a...
Maybe farming is passé in mobile games now. Ah, but farming -- and doing a lot of a other things too -- in an island paradise might be a little different. At least you can work on your tan and sip some pina coladas while tending to your crops. [... | Read more »
Become the King of Avalon in FunPlus’ la...
King Arthur is dead. Considering the legend dates back to the 5th century, it would be surprising if he wasn’t. But in the context of real-time MMO game King of Avalon: Dragon Warfare, Arthur’s death plunges the kingdom into chaos. Evil sorceress... | Read more »
Nightgate (Games)
Nightgate 1.0 Device: iOS Universal Category: Games Price: $2.99, Version: 1.0 (iTunes) Description: *** Launch Sale: 25% OFF for a limited time! *** In the year 2398, after a great war, a network of intelligent computers known as... | Read more »
3 best fantasy football apps to get you...
Last season didn't go the way you wanted it to in fantasy football. You were super happy following your drafts or auctions, convinced you had outsmarted everyone. You were all set to hustle on the waiver wire, work out some sweet trades, and make... | Read more »
Pokemon GO update: Take me to your leade...
The Team Leaders in Pokemon GO have had it pretty easy up until now. They show up when players reach level 5, make their cases for joining their respective teams, and that's pretty much it. Light work, as Floyd Mayweather might say. [Read more] | Read more »

Price Scanner via MacPrices.net

Global Tablet Shipments Projected to Increase...
Digitimes’ Jim Hsiao reports that global tablet shipments will increase by 16.3 percent sequentially to reach nearly 47 million units in 2016′s third quarter, but that volume will still be down over... Read more
Apple’s 2016 Back to School promotion: Free B...
Purchase a new Mac or iPad using Apple’s Education Store and take up to $300 off MSRP. All teachers, students, and staff of any educational institution qualify for the discount. Shipping is free, and... Read more
Apple refurbished iPad Air 2s available start...
Apple has Certified Refurbished iPad Air 2 available starting at $339. Apple’s one-year warranty is included with each model, and shipping is free: - 128GB Wi-Fi iPad Air 2: $499 - 64GB Wi-Fi iPad... Read more
13-inch 2.5GHz MacBook Pro available for $961...
Overstock has the 13″ 2.5GHz MacBook Pro available for $961.63 including free shipping. Their price is $138 off MSRP. Read more
Clearance 12-inch Retina MacBooks, Apple refu...
Apple has Certified Refurbished 2015 12″ Retina MacBooks available starting at $929. Apple will include a standard one-year warranty with each MacBook, and shipping is free. The following... Read more
BookBook Releases SurfacePad, BookBook &...
BookBook has released three new covers just for iPad Pro: SurfacePad, BookBook and BookBook Rutledge Edition. BookBook for iPad Pro is a gorgeous leather case reminiscent of a vintage sketchbook.... Read more
Clean Text 1.0 for iOS Reduces Text Cleanup a...
Apimac today announced availability of Clean Text for iOS, a tool for webmasters, graphic designers, developers and magazine editors to reduce text cleanup and editing time, and also for any iPhone... Read more
27-inch iMacs on sale for up to $220 off MSRP
B&H Photo has 27″ Apple iMacs on sale for up to $200 off MSRP including free shipping plus NY sales tax only: - 27″ 3.3GHz iMac 5K: $2099 $200 off MSRP - 27″ 3.2GHz/1TB Fusion iMac 5K: $1899 $100... Read more
Apple refurbished 13-inch MacBook Airs availa...
Apple has Certified Refurbished 2016 and 2015 13″ MacBook Airs now available starting at $849. An Apple one-year warranty is included with each MacBook, and shipping is free: - 2016 13″ 1.6GHz/8GB/... Read more
Apple refurbished iPad mini 2s available for...
Apple is offering Certified Refurbished iPad mini 2s for up to $80 off the cost of new minis. An Apple one-year warranty is included with each model, and shipping is free: - 16GB iPad mini 2 WiFi: $... Read more

Jobs Board

Hardware Design Validation Engineer - *Apple...
Changing the world is all in a day's work at Apple . If you love innovation, here's your chance to make a career of it. You'll work hard. But the job comes with more Read more
*Apple* /Mac Support Engineer - GFI Digital,...
FI Digital, Inc. is currently seeking candidates for a full time Apple Support Engineer to add to our Maryland Heights, Missouri IT team. Candidates must be dynamic Read more
*Apple* Solutions Consultant - Apple (United...
Apple Solutions ConsultantJob Number: 51218534Pleasant Hill, California, United StatesPosted: Aug. 18, 2016Weekly Hours: 40.00Job SummaryAs an Apple Solutions Read more
SW Engineer *Apple* TV - Apple Inc. (United...
The Apple TV team is looking for excellent software engineers with experience in hardware, media management, media playback, content delivery and a passion for 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.