TweetFollow Us on Twitter

Mar 97 Top 10

Volume Number: 13 (1997)
Issue Number: 3
Column Tag: Symantec Top Ten

Symantec Top 10

By Richard Hill, Symantec Technical Support

This monthly column, written by Symantec's Technical Support Engineers, aims to provide you with technical information based on the use of Symantec products.

Q: My Visual Architect project uses a modal dialog that I want to be able to make appear and disappear without repeatedly allocating and releasing resources. How would I do this?

A: While not immediately obvious, the answer to this is fairly simple. Since CDialog and CDLOGDialog are descendants of CWindow, you can use CWindow's member functions Hide() and Show() to control visibility. To make the dialog ‘go away' without releasing its resources use myDialog->Hide(). Whether it is visible or not, you can update its contents to your liking. Re-display it at the appropriate time with myDialog->Show().

Q: My Symantec C++ Project will not run under the debugger. What might be the problem?

A: There are a couple different reasons for this problem. The most common culprit is corruption in one of your built objects. Choosing Remove Objects from the Build menu is the easiest way to deal with this offender. Another less common (but just as obtrusive) condition has to do with the Project Type setting in the Project | Options submenu. If either Shared or Static Library is selected for the project type, the debugger will be disabled for this project. If the type has been erroneously set to a library, set it back to Application and then Remove Objects from the Build menu. All should be well.

Q: My loop control condition in C is not evaluating correctly. I know x has reached 10, but control is staying in the loop. What's going on?

while (x>10)

{

x = x/y + ...;

}

A: The problem here has to do with rounding and floating point precision. Try this instead:

while (abs(x-10) > 0.0000001)

Obviously, you can change the precision level by changing how many decimal places to use.

Q: My Java applet is accessing an SQL database through dbANYWHERE. The data in my result set is acting weird. Among other things, my comparisons are not evaluating they way I know they should.

A: As it turns out, some SQL databases return their data padded to the length of the field (as defined in the database) plus 1 character (the delimiter). Luckily, Sun included a trim() method in the java.lang.String class. If the database you are connecting to returns padded strings, get in the habit of calling myString = myString.trim().

Q: I want to use a String as my conditional but (myString == the text) is not evaluating true when I know it should.

A: The problem here is that Java defines a String as an object, not a primary data type. You can still do what you want, you just have to use the String member function .equals(). Try this instead: if (myString.equals("the text") {}. This will evaluate to true when it should.

Q: I really love Symantec C++ and think it is the best development environment around, but I have to do some development using libraries that only exist for Metrowerks CodeWarrior . What can I do?

A: Rest at ease. We have developed a translator that allows you to use the MW libraries transparently with your Symantec C++ projects. The translator should be available at our WWW site (ftp.symantec.com) by the time this goes to print.

Q: I have been using Symantec Café (developer release) for some time now. I just upgraded my Mac and now Café will not compile anything. What is going on?

A: If you just copied the Symantec Café folder from one drive to another, rather than reinstalling on the new drive, you may be having a problem with an alias. In the (Translators) folder there is an alias called Java. This alias needs to be pointing to the Java file in your (Java Libraries) folder. If it is not, your project will refuse to compile.

Q: I want to be able to display my source code in an html file, but when I try I lose my formatting, and it makes the code very difficult to read.

A: Try copy and pasting your nicely formatted text from your editor window into a Visual Page window. Now select your code in the Visual Page window and select Preformatted from the Format menu. This method will retain all of your formatting and is the method we use here at Symantec. Another way to accomplish something similar is to drag a source code file to a Visual Page window. However, you may lose some formatting information like fonts and color using this method. It depends on whether your editor saves the formatting information in the file or determines it ‘on the fly'.

Q: How can I change the transparency setting of an image in Visual Page?

A: There are two ways to get to the right place for this. One is to Open the graphic image from the File menu. The quicker method is to hold down the Option key while double clicking on the displayed image. Either way will take you to an editing view for the image. Here you can choose what color (if any) to make transparent. You can define your imagemap regions and links here as well.

Q: I can not get my Java application to access a files that I know are on my drive. What is wrong?

A: Many Macintosh users are in the habit of naming their folders with a suffix of ‘ƒ' (Option-f). Unfortunately, the character set that Java supports for its paths does not include this character (among others). If you are having problems with folder or file access, check to see if any of the folders have any unusual characters and remove them.

Special Thanks to Mark Baldwin, Bob Meyer, Steve Howard, Kevin Kenan, and Steve Wolf.

 
AAPL
$104.83
Apple Inc.
+1.84
MSFT
$45.02
Microsoft Corpora
+0.64
GOOG
$543.98
Google Inc.
+11.27

MacTech Search:
Community Search:

Software Updates via MacUpdate

Delicious Library 3.3.2 - Import, browse...
Delicious Library allows you to import, browse, and share all your books, movies, music, and video games with Delicious Library. Run your very own library from your home or office using our... Read more
Art Text 2.4.8 - Create high quality hea...
Art Text is an OS X application for creating high quality textual graphics, headings, logos, icons, Web site elements, and buttons. Thanks to multi-layer support, creating complex graphics is no... Read more
Live Interior 3D Pro 2.9.6 - Powerful an...
Live Interior 3D Pro is a powerful yet very intuitive interior designing application. View Video Tutorials It has every feature of Live Interior 3D Standard, plus some exclusive ones: Create multi... Read more
The Hit List 1.1.7 - Advanced reminder a...
The Hit List manages the daily chaos of your modern life. It's easy to learn - it's as easy as making lists. And it's powerful enough to let you plan, then forget, then act when the time is right.... Read more
jAlbum Pro 12.2.4 - Organize your digita...
jAlbum Pro has all the features you love in jAlbum, but comes with a commercial license. With jAlbum, you can create gorgeous custom photo galleries for the Web without writing a line of code!... Read more
jAlbum 12.2.4 - Create custom photo gall...
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
ExpanDrive 4.1.7 - Access remote files o...
ExpanDrive builds cloud storage in every application, acts just like a USB drive plugged into your Mac. With ExpanDrive, you can securely access any remote file server directly from the Finder or... Read more
OmniOutliner Pro 4.1.3 - Pro version of...
OmniOutliner Pro is a flexible program for creating, collecting, and organizing information. Give your creativity a kick start by using an application that's actually designed to help you think. It'... Read more
Evernote 5.6.2 - Create searchable notes...
Evernote allows you to easily capture information in any environment using whatever device or platform you find most convenient, and makes this information accessible and searchable at anytime, from... Read more
OmniOutliner 4.1.3 - Organize your ideas...
OmniOutliner is a flexible program for creating, collecting, and organizing information. Give your creativity a kick start by using an application that's actually designed to help you think. It's... Read more

Latest Forum Discussions

See All

A Few Days Left (Games)
A Few Days Left 1.01 Device: iOS Universal Category: Games Price: $3.99, Version: 1.01 (iTunes) Description: Screenshots are in compliance to App Store's 4+ age rating! Please see App Preview for real game play! **Important: Make... | Read more »
Toca Boo (Education)
Toca Boo 1.0.2 Device: iOS Universal Category: Education Price: $2.99, Version: 1.0.2 (iTunes) Description: BOO! Did I scare you!? My name is Bonnie and my family loves to spook! Do you want to scare them back? Follow me and I'll... | Read more »
Intuon (Games)
Intuon 1.1 Device: iOS Universal Category: Games Price: $.99, Version: 1.1 (iTunes) Description: Join the battle with your intuition in a new hardcore game Intuon! How well do you trust your intuition? Can you find a needle in a... | Read more »
Ravenous Rampage (Games)
Ravenous Rampage 1.0 Device: iOS Universal Category: Games Price: $.99, Version: 1.0 (iTunes) Description: | Read more »
Partia 2 (Games)
Partia 2 1.0.1 Device: iOS Universal Category: Games Price: $5.99, Version: 1.0.1 (iTunes) Description: Partia 2 is a SRPG (Strategy Role-playing) video game inspired by Fire Emblem and Tear Ring Saga series. In a high fantasy... | Read more »
Puzzle to the Center of the Earth Review
Puzzle to the Center of the Earth Review By Campbell Bird on October 23rd, 2014 Our Rating: :: SPELUNKING PUZZLESUniversal App - Designed for iPhone and iPad Do some puzzles to make some platforms in this smart and fun free-to-play... | Read more »
Sleep Attack TD Review
Sleep Attack TD Review By Jennifer Allen on October 23rd, 2014 Our Rating: :: A TRUE TWISTUniversal App - Designed for iPhone and iPad Sleep Attack TD is a tower defense game with a difference – you can rotate the layout – and it’s... | Read more »
Mecanic (Education)
Mecanic 1.0 Device: iOS Universal Category: Education Price: $1.99, Version: 1.0 (iTunes) Description: Plates, screws, wheels ... Everything you need to achieve whatever you want... MECHANICWith 'MECANIC' kids will have fun... | Read more »
Earn Your Master Camper Badge in Camp Po...
Earn Your Master Camper Badge in Camp Pokemon Posted by Jessica Fisher on October 23rd, 2014 [ permalink ] Universal App - Designed for iPhone and iPad | Read more »
Garruk Gets His Revenge in a New Magic 2...
Garruk Gets His Revenge in a New Magic 2015 Expansion, Coming This November Posted by Jessica Fisher on October 23rd, 2014 [ permalink ] | Read more »

Price Scanner via MacPrices.net

Save up to $125 on Retina MacBook Pros
B&H Photo has the new 2014 13″ and 15″ Retina MacBook Pros on sale for up to $125 off MSRP. Shipping is free, and B&H charges NY sales tax only. They’ll also include free copies of Parallels... Read more
Apple refurbished Time Capsules available sta...
The Apple Store has certified refurbished Time Capsules available for up to $60 off MSRP. Apple’s one-year warranty is included with each Time Capsule, and shipping is free: - 2TB Time Capsule: $255... Read more
Textilus New Word, Notes and PDF Processor fo...
Textilus is new word-crunching, notes, and PDF processor designed exclusively for the iPad. I haven’t had time to thoroughly check it out yet, but it looks great and early reviews are positive.... Read more
WD My Passport Pro Bus-Powered Thunderbolt RA...
WD’s My Passport Pro RAID solution is powered by an integrated Thunderbolt cable for true portability and speeds as high as 233 MB/s. HighlightsOverviewSpecifications Transfer, Back Up And Edit In... Read more
Save with Best Buy’s College Student Deals
Take an additional $50 off all MacBooks and iMacs at Best Buy Online with their College Students Deals Savings, valid through November 1st. Anyone with a valid .EDU email address can take advantage... Read more
iPad Air 2 & iPad mini 3 Best Tablets Yet...
The new iPads turned out to be pretty much everything I’d been hoping for and more than I’d expected.”More” particularly in terms of a drinking-from-a-firehose choice of models and configurations,... Read more
Drafts 4 Reinvents iOS Productivity App
N Richland Hills, Texas based Agile Tortoise has announced the release of Drafts 4 for iPhone and iPad. Drafts is a quick capture note taking app with flexible output actions. Drafts 4 scales from... Read more
AT&T accepting preorders for new iPads fo...
AT&T Wireless is accepting preorders for the new iPad Air 2 and iPad mini 3, cellular models, for $100 off MSRP with a 2-year service agreement: - 16GB iPad Air 2 WiFi + Cellular: $529.99 - 64GB... Read more
Apple offering refurbished Mac Pros for up to...
The Apple Store is offering Apple Certified Refurbished 2013 Mac Pros for up to $600 off the cost of new models. An Apple one-year warranty is included with each Mac Pro, and shipping is free. The... Read more
Select MacBook Airs $100 off MSRP, free shipp...
B&H Photo has 2014 a couple of MacBook Airs on sale for $100 off MSRP. Shipping is free, and B&H charges NY sales tax only. They also include free copies of Parallels Desktop and LoJack for... Read more

Jobs Board

*Apple* Solutions Consultant - Apple Inc. (U...
…important role that the ASC serves is that of providing an excellent Apple Customer Experience. Responsibilities include: * Promoting Apple products and solutions Read more
Senior Event Manager, *Apple* Retail Market...
…This senior level position is responsible for leading and imagining the Apple Retail Team's global event strategy. Delivering an overarching brand story; in-store, Read more
*Apple* Solutions Consultant (ASC) - Apple (...
**Job Summary** The ASC is an Apple employee who serves as an Apple brand ambassador and influencer in a Reseller's store. The ASC's role is to grow Apple Read more
Project Manager / Business Analyst, WW *Appl...
…a senior project manager / business analyst to work within our Worldwide Apple Fulfillment Operations and the Business Process Re-engineering team. This role will work 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.