TweetFollow Us on Twitter

Mar 96 Top 10
Volume Number:12
Issue Number:3
Column Tag:Symantec Top 10

Symantec Top 10

This monthly column, written by Symantec’s Technical Support Engineers, is intended to give our readers technical information on using Symantec products.

By Kevin Quah and Noah Lieberman, Symantec Technical Support

Note: Source code files accompanying article are located on MacTech CD-ROM or source code disks.

Q: I am using the Visual Architect and cannot find a way to change the background color of my window. Is there a way to do this using the VA?

A: Although you cannot do this in VA, you can do it programmatically using the toolbox. The class CDocument has a data member macPort, which is a pointer to a GrafPort structure (see below). One of the fields of this structure is rgbFgColor, of type RGBColor. You can set this field with the toolbox call RGBForeColor() which takes an RGBColor as an argument. It will set the rgbFgColor field of the current CGrafPort to the color specified.

If you do not already have an RGBColor ready to pass, you can simply declare one, and set its three fields (between 0 and 65535) to get the color you want.

RGBColor myRGB;
myRGB.red = 0;   // Black
myRGB.blue = 0;
myRGB.green = 0; 

The only thing left to worry about is making sure that the right CGrafPort is current when you call RGBForeColor(); a good place to do this is in the MakeNewWindow() function in your CDocument object. A default VA project will produce the file x_CMain.cp (derived from CDocument). Notice the data member itsWindow in the first line. This is a pointer to a CWindow, the one that goes with the default CView in the Visual Architect .rsrc file, Main.

Override x_CMain::MakeNewWindow() in CMain. In CMain::MakeNewWindow(), first call x_CMain::MakeNewWindow, call the Prepare() function of your CWindow object (itsWindow), and call RGBForeColor() to set the color.

x_CMain::MakeNewWindow();
itsWindow->Prepare();
RGBForeColor(&myRGB);

Note: Although macPort is declared as a GrafPort, you can get at the CGrafPort fields by casting it to a CGrafPort; e.g., (CGrafPort)macPort->rgbFgColor.

Q: CDialogText seems to report keystrokes to its supervisor, but fails to report cuts and pastes. In the Visual Architect, I chose Classes from the Edit menu and defined a new class. If you type the name of a Library Class, VA will remember it correctly, but if you paste in the name of the Library Class, VA will forget it as soon as you close the dialog box or as soon as you click on another class name in the scrolling list. What is wrong?

A: There is a bug in CDialogText which will be fixed in a later release. For now, please make this change to CDialogText.cp:

virtual voidDoCommand(long theCommand);

void CDialogText::DoCommand(
 long   theCommand)
{
 inherited::DoCommand(theCommand);

 switch (theCommand)
 {
 case cmdCut:
 case cmdPaste:
 case cmdClear:
 if (editable)
    /* ID is identifier for this view */
 BroadcastChange(dialogTextChanged, &ID); 
 break;

 default:
 break;
 }
}

Q: I want to set a breakpoint in a function that is not in the file that is currently displayed in the Debugger window. How do I do this?

A: When you choose Run with Debugger from the project menu, the debugger will come up and place you at the beginning of the program. Switch back to the project manager and double-click the file you want to debug from the project window. Choose Debug File from the Project menu. This will bring you back into the debugger with the chosen file displayed in the debugger window. Now you can set your breakpoint.

Q: I’m trying to use floating-point numbers in my VA project using Symantec C++ 7.0.x, and I am getting wildly inaccurate results.

A: By default, a VA project includes ANSI_small++, which does not support floating-point numbers. Remove ANSI_small++ and replace it with ANSI++.

Q: I am familiar with command-line compilers where you would use a -d switch to define something for the entire project. How do you do this in Symantec C++?

A: In the Project Options dialog, select the compiler you are using (for example PowerPC C, or MrC++), and then select the Prefix page. Anything you add to the prefix will be globally defined.

Q: I have a single-segment code resource that was working fine. Now that I have made it multi-segment, it is crashing all over the place. I am not using any globals, so I should not need to set up A4 - right?

A. In multi-segment code resources, THINK C stores string literals the same way as globals. If you are using literals and constants, you still need to set up A4. In single-segment code resources, string literals are stored in code and you don’t need to set up A4 to use them. Symantec C++ handles string literals in code resources in the same way that THINK C does - unless you turn on Put String Literals in Code on the Compiler Options page of the Options dialog. Then, Symantec C++ will store string literals in code, and you will not need to set up A4 to use them.

Q: I need to access a data member or member function of my CApp class. How do I do this?

A: In CApp.h, add this statement:

 #define gApp ((CApp*)gApplication)

Now gApp will be a globally scoped pointer variable that you can use to access your CApp member functions or data members.

Q: I would like to use the MrC and MrC++ translators to compile an existing SPM C/C++ project. How do I do this?

A: a. Choose Options from the Project menu.

b. Click on the Extensions icon in the left scrolling window.

c. Select the .c file extension.

d. Set the Translator popup menu to SPM MrC.

e. Click on the Replace button.

Repeat steps (c) though (e) for .cp and .cpp file extensions, except set the Translator for both extensions to SPM MrC++. Click Save. Update and run your project.

The SPM MrC and MrC++ translators take a longer time to compile, but they produce code that is highly optimized. To view performance benchmarks visit the website:

http://www.symantec.com/lit/dev/macprdet.html

We recommend that you use the default translators (PowerPC C and PowerPC C++) during the earlier phases of development for fast edit-compile-debug cycles, and then switch to SPM MrC or MrC++ to create the later optimized builds of the product.

Q: I am trying to use the new MrC/MrC++ compiler off the Release 4 CD, and even on the most basic projects I am getting strange link errors such as: undefined symbol .B2S997, .B2S998, .B2S999. Am I doing something wrong?

A: In order to use the SPM MrC or MrC++ compilers, you must use the latest Symantec Project Manager 8.04d11 (or later). It may be found in the Pre-release Symantec C++ for Power Mac folder.

Q: My project now uses SPM MrC and SPM MrC++ translators. When I compile I get the warning:

Prefix "SPM MrC++";

While compiling "main.cp"

Warning: debugging symbols can't be generated with optimizations on

What is wrong?

A: It is not possible to debug optimized code with MrC/MrC++. If you select Optimizer On and also check the debug diamond in the project window, no debug information will be generated and you will get a warning to that effect.

Correction:

In the January MacTech Magazine Symantec Top 10 article, there was a question regarding how to add note files and ReadMe files to a SPM project. The solution was to make a <<none>> translator and map this to an extension such as .note. This procedure is not recommended and may cause project corruption.

There are two correct methods for adding non-source files to a project. Either hold down the command-key and drag a file to the project window (drag-and-drop method), or choose Add Files... from the Project menu, and then select All Files from the Show: popup menu. You can then add non-source files to your project. For more information, please consult pp. 16-17 of your User’s Guide.

Special Thanks To:

Michael Hopkins, Andrew McFarland, Yuen Li, Mark Baldwin, Glenn Austin, Craig Conner, Tom Emerson, John Micco and Jeff Weeks.

 

Community Search:
MacTech Search:

Software Updates via MacUpdate

BBEdit 11.6.4 - 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
beaTunes 4.6.12 - Organize your music co...
beaTunes is a full-featured music player and organizational tool for music collections. How well organized is your music Library? Are your artists always spelled the same way? Any R.E.M. vs REM?... Read more
Tinderbox 7.0.1 - 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
FotoMagico 5.4 - Powerful slideshow crea...
FotoMagico lets you create professional slideshows from your photos and music with just a few, simple mouse clicks. It sports a very clean and intuitive yet powerful user interface. High image... Read more
Direct Mail 4.3.9 - Create and send grea...
Direct Mail is an easy-to-use, fully-featured email marketing app purpose-built for OS X. It lets you create and send great looking email campaigns. Start your newsletter by selecting from a gallery... Read more
Tinderbox 7.0.1 - 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
Direct Mail 4.3.9 - Create and send grea...
Direct Mail is an easy-to-use, fully-featured email marketing app purpose-built for OS X. It lets you create and send great looking email campaigns. Start your newsletter by selecting from a gallery... Read more
FotoMagico 5.4 - Powerful slideshow crea...
FotoMagico lets you create professional slideshows from your photos and music with just a few, simple mouse clicks. It sports a very clean and intuitive yet powerful user interface. High image... Read more
beaTunes 4.6.12 - Organize your music co...
beaTunes is a full-featured music player and organizational tool for music collections. How well organized is your music Library? Are your artists always spelled the same way? Any R.E.M. vs REM?... 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

The best sales on the App Store this wee...
The App Store has quite an exciting lineup of discount games this week that range across a variety of genres. It's a great opportunity to catch up on some of the premium games you may have been holding off on -- and some you can even grab for free... | Read more »
The best new games we played this week
Ah, here we are again at the close of another busy week. Don't rest too easy, though. We had a lot of great new releases in mobile games this week, and now you're going to have to spend all weekend playing them. That shouldn't be too much of a... | Read more »
Rollercoaster Tycoon Touch Guide: How to...
| Read more »
Rabbids Crazy Rush Guide: How to unlock...
The Rabbids are back in a new endless running adventure, Rabbids Crazy Rush. It's more ridiculous cartoon craziness as you help the little furballs gather enough fuel (soda) to get to the moon. Sure, it's a silly idea, but everyone has dreams --... | Read more »
Tavern Guardians (Games)
Tavern Guardians 1.0 Device: iOS Universal Category: Games Price: $2.99, Version: 1.0 (iTunes) Description: Tavern Guardians is a Hack-and-Slash action game played in the style of a match-three. You can experience high pace action... | Read more »
Slay your way to glory in idle RPG Endle...
It’s a golden age for idle games on the mobile market, and those addictive little clickers have a new best friend. South Korean developer Ekkorr released Endless Frontier last year, and players have been idling away the hours in the company of its... | 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 »

Price Scanner via MacPrices.net

13-inch 2.0GHz Apple MacBook Pros on sale for...
B&H has the non-Touch Bar 13″ 2.0GHz MacBook Pros in stock today and on sale for $100 off MSRP. Shipping is free, and B&H charges NY sales tax only: - 13″ 2.0GHz MacBook Pro Space Gray (... Read more
15-inch Touch Bar MacBook Pros on sale for up...
B&H Photo has the new 2016 15″ Apple Touch Bar MacBook Pros in stock today and on sale for up to $150 off MSRP. Shipping is free, and B&H charges NY sales tax only: - 15″ 2.7GHz Touch Bar... Read more
12-inch Retina MacBooks on sale for $1150, $1...
B&H has 12″ 1.1GHz Retina MacBooks on sale for $150 off MSRP. Shipping is free, and B&H charges NY sales tax only: - 12″ 1.1GHz Space Gray Retina MacBook: $1149 $150 off MSRP - 12″ 1.1GHz... Read more
Apple restocks refurbished 11-inch MacBook Ai...
Apple has Certified Refurbished 11″ MacBook Airs (the latest models recently discontinued by Apple), available for up to $170 off original MSRP. An Apple one-year warranty is included with each... Read more
Apple Park Opens to Employees in April With T...
Apple has announced that Apple Park, the company’s new 175-acre campus, will be ready for employees to begin occupying in April. The process of moving more than 12,000 people will take over six... Read more
Manhattan Neighbors for Safer Telecommunicati...
A new education and advocacy group focused on cell phone and wireless risks, Manhattan Neighbors for Safer Telecommunications, launched today at http://www.ManhattanNeighbors.org. Manhattan... Read more
Portable Dual DisplayPort Monitor Dock Enable...
IOGEAR has announced the launch of its USB-C Dual DisplayPort Monitor Portable Dock (GUC3CMST). The dock enables users to easily connect two DisplayPort monitors to a USB-C or Thunderbolt 3 laptop to... Read more
13-inch 2.7GHz Retina MacBook Pro on sale for...
Amazon.com has restocked the 13″ 2.7GHz/128GB Retina MacBook Pro (MF839LL/A) for $200 off MSRP including free shipping: - 13″ 2.7GHz/128GB Retina MacBook Pro: $1099 $200 off MSRP This model tends to... Read more
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

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
*Apple* Retail - Multiple Positions- Chicago...
SalesSpecialist - Retail Customer Service and SalesTransform Apple Store visitors into loyal Apple customers. When customers enter the store, you're also the 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
All contents are Copyright 1984-2011 by Xplain Corporation. All rights reserved. Theme designed by Icreon.