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

FotoMagico 5.6.12 - Powerful slideshow c...
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
OmniGraffle Pro 7.12.1 - Create diagrams...
OmniGraffle Pro helps you draw beautiful diagrams, family trees, flow charts, org charts, layouts, and (mathematically speaking) any other directed or non-directed graphs. We've had people use... Read more
beaTunes 5.2.1 - Organize your music col...
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
HandBrake 1.3.0 - Versatile video encode...
HandBrake is a tool for converting video from nearly any format to a selection of modern, widely supported codecs. Features Supported Sources VIDEO_TS folder, DVD image or real DVD (unencrypted... Read more
Macs Fan Control 1.5.1.6 - Monitor and c...
Macs Fan Control allows you to monitor and control almost any aspect of your computer's fans, with support for controlling fan speed, temperature sensors pane, menu-bar icon, and autostart with... Read more
TunnelBear 3.9.3 - Subscription-based pr...
TunnelBear is a subscription-based virtual private network (VPN) service and companion app, enabling you to browse the internet privately and securely. Features Browse privately - Secure your data... Read more
calibre 4.3.0 - 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
Lyn 1.13 - Lightweight image browser and...
Lyn is a fast, lightweight image browser and viewer designed for photographers, graphic artists, and Web designers. Featuring an extremely versatile and aesthetically pleasing interface, it delivers... Read more
Visual Studio Code 1.40.0 - Cross-platfo...
Visual Studio Code provides developers with a new choice of developer tool that combines the simplicity and streamlined experience of a code editor with the best of what developers need for their... Read more
OmniGraffle 7.12.1 - Create diagrams, fl...
OmniGraffle helps you draw beautiful diagrams, family trees, flow charts, org charts, layouts, and (mathematically speaking) any other directed or non-directed graphs. We've had people use Graffle to... Read more

Latest Forum Discussions

See All

The House of Da Vinci 2 gets a new gamep...
The House of Da Vinci launched all the way back in 2017. Now, developer Blue Brain Games is gearing up to deliver a second dose of The Room-inspired puzzling. Some fresh details have now emerged, alongside the game's first official trailer. [Read... | Read more »
Shoot 'em up action awaits in Battl...
BattleBrew Productions has just introduced another entry into its award winning, barrelpunk inspired, BattleSky Brigade series. Whilst its previous title BattleSky Brigade TapTap provided fans with idle town building gameplay, this time the... | Read more »
Arcade classic R-Type Dimensions EX blas...
If you're a long time fan of shmups and have been looking for something to play lately, Tozai Games may have just released an ideal game for you on iOS. R-Type Dimensions EX brings the first R-Type and its sequel to iOS devices. [Read more] | Read more »
Intense VR first-person shooter Colonicl...
Our latest VR obsession is Colonicle, an intense VR FPS, recently released on Oculus and Google Play, courtesy of From Fake Eyes and Goboogie Games. It's a pulse-pounding multiplayer shooter which should appeal to genre fanatics and newcomers alike... | Read more »
PUBG Mobile's incoming update bring...
PUGB Mobile's newest Royale Pass season they're calling Fury of the Wasteland arrives tomorrow and with it comes a fair chunk of new content to the game. We'll be seeing a new map, weapon and even a companion system. [Read more] | Read more »
PSA: Download Bastion for free, but wait...
There hasn’t been much news from Supergiant Games on mobile lately regarding new games, but there’s something going on with their first game. Bastion released on the App Store in 2012, and back then it was published by Warner Bros. This Warner... | Read more »
Apple Arcade: Ranked - 51+ [Updated 11.5...
This is Part 2 of our Apple Arcade Ranking list. To see part 1, go here. 51. Patterned [Read more] | Read more »
NABOKI is a blissful puzzler from acclai...
Acclaimed developer Rainbow Train's latest game, NABOKI, is set to launch for iOS, Android, and Steam on November 13th. It's a blissful puzzler all about taking levels apart in interesting, inventive ways. [Read more] | Read more »
A Case of Distrust is a narrative-driven...
A Case of Distrust a narrative-focused mystery game that's set in the roaring 20s. In it, you play as a detective with one of the most private eye sounding names ever – Phyllis Cadence Malone. You'll follow her journey in San Francisco as she... | Read more »
Brown Dust’s October update offers playe...
October is turning out to be a productive month for the Neowiz team, and a fantastic month to be a Brown Dust player. First, there was a crossover event with the popular manga That Time I Got Reincarnated as a Slime. Then, there was the addition of... | Read more »

Price Scanner via MacPrices.net

Score a 37% discount on Apple Smart Keyboards...
Amazon has Apple Smart Keyboards for current-generation 10″ iPad Airs and previous-generation 10″ iPad Pros on sale today for $99.99 shipped. That’s a 37% discount over Apple’s regular MSRP of $159... Read more
Apple has refurbished 2019 13″ 1.4GHz MacBook...
Apple has a full line of Certified Refurbished 2019 13″ 1.4GHz 4-Core Touch Bar MacBook Pros available starting at $1099 and up to $230 off MSRP. Apple’s one-year warranty is included, shipping is... Read more
2019 13″ 1.4GHz 4-Core MacBook Pros on sale f...
Amazon has new 2019 13″ 1.4GHz 4-Core Touch Bar MacBook Pros on sale for $150-$200 off Apple’s MSRP. These are the same MacBook Pros sold by Apple in its retail and online stores: – 2019 13″ 1.4GHz/... Read more
11″ 64GB Gray WiFi iPad Pro on sale for $674,...
Amazon has the 11″ 64GB Gray WiFi iPad Pro on sale today for $674 shipped. Their price is $125 off MSRP for this iPad, and it’s the lowest price available for the 64GB model from any Apple reseller. Read more
2019 15″ MacBook Pros available for up to $42...
Apple has a full line of 2019 15″ 6-Core and 8-Core Touch Bar MacBook Pros, Certified Refurbished, available for up to $420 off the cost of new models. Each model features a new outer case, shipping... Read more
2019 15″ MacBook Pros on sale this week for $...
Apple resellers B&H Photo and Amazon are offering the new 2019 15″ MacBook Pros for up to $300 off Apple’s MSRP including free shipping. These are the same MacBook Pros sold by Apple in its... Read more
Sunday Sale: AirPods with Wireless Charging C...
B&H Photo has Apple AirPods with Wireless Charging Case on sale for $159.99 through 11:59pm ET on November 11th. Their price is $40 off Apple’s MSRP, and it’s the lowest price available for these... Read more
Details of Sams Club November 9th one day App...
Through midnight Saturday night (November 9th), Sams Club online has several Apple products on sale as part of their One Day sales event. Choose free shipping or free local store pickup (if available... Read more
Sprint is offering the 64GB Apple iPhone 11 f...
Sprint has the new 64GB iPhone 11 available for $15 per month for new lines. That’s about 50% off their standard monthly lease of $29.17. Over is valid until November 24, 2019. The fine print: “Lease... Read more
New Sprint November iPhone deal: Lease one iP...
Switch to Sprint and purchase an Apple iPhone 11, 11 Pro, or 11 Pro Max, and get a second 64GB iPhone 11 for free. Requires 2 new lines or 1 upgrade-eligible line and 1 new line. Offer is valid from... Read more

Jobs Board

*Apple* Mobility Pro - Best Buy (United Stat...
**746087BR** **Job Title:** Apple Mobility Pro **Job Category:** Store Associates **Store NUmber or Department:** 000319-Harlem & Irving-Store **Job Description:** Read more
Best Buy *Apple* Computing Master - Best Bu...
**743392BR** **Job Title:** Best Buy Apple Computing Master **Job Category:** Store Associates **Store NUmber or Department:** 001171-Southglenn-Store **Job Read more
Best Buy *Apple* Computing Master - Best Bu...
**746015BR** **Job Title:** Best Buy Apple Computing Master **Job Category:** Sales **Store NUmber or Department:** 000372-Federal Way-Store **Job Description:** Read more
*Apple* Mobility Pro - Best Buy (United Stat...
**744658BR** **Job Title:** Apple Mobility Pro **Job Category:** Store Associates **Store NUmber or Department:** 000586-South Hills-Store **Job Description:** At Read more
Best Buy *Apple* Computing Master - Best Bu...
**741552BR** **Job Title:** Best Buy Apple Computing Master **Job Category:** Sales **Store NUmber or Department:** 000277-Metcalf-Store **Job Description:** **What Read more
All contents are Copyright 1984-2011 by Xplain Corporation. All rights reserved. Theme designed by Icreon.