TweetFollow Us on Twitter

Jan 96 Top 10
Volume Number:12
Issue Number:1
Column Tag:Symantec Top 10

Symantec Top 10

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

By Michael Hopkins, Symantec

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

Q: I want to be able to add files to my project, such as ReadMe files and notes, without having the project manager attempt to compile them. Is there any way to create an extension such as a .note extension in the SPM that does not use a translator?

A: Yes, there is. Quit the SPM and open your Symantec C++ folder. Copy the file «none» from your Translators folder (the one with the THINK Project Manager icon) to your (Translators) folder (the one with the Symantec Project Manager icon). With ResEdit, open the copy and choose Get Info for «none» from the File menu. Change the creator from KAHL to None. Save the file, and quit ResEdit. Now go back and launch your project in the Symantec Project Manager and choose Options from the Project menu and go to the Extensions page. Type the name of the extension that you want to use for your non-compiled source files in the File Extension edit text box. Choose «none» from the Translator popup menu, click the Add button and then click the Save button.

Adding .note to the File Extensions List

Q: When I run my program with the Symantec Debugger from the Symantec Project Manager, the source code window does not come up and the debugger palette buttons Go, Step, In, etc. are not active. What is causing this, and how can I fix it?

A: This behavior is a result of your application being compiled with incorrect 'SIZE' flags. The debugger requires that your project has Background Null Events and MultiFinder Aware checked on the Flags popup menu in the Project Type page of the Project Options dialog. Without these flags, Power Mac DebugServices will not be able to communicate with your application.

Q: I have written a brief program in the THINK Project Manager that is crashing my machine big time. The code is as follows:

typedef struct {
 int a, b;
} Foo, *FooPtr;

main()
{
 FooPtr foobuf;
 int i, size = 100;

 foobuf = (FooPtr) malloc( size*sizeof(Foo) );
 if (foobuf == NULL)
 exit(0);
 for ( i = 0; i < size; i++ )
 {
 foobuf[i].a = 0;
 foobuf.b = 0;
 }
}

Why is this causing me so much trouble? Is something wrong with malloc?

A: No, malloc is not at fault. By not including <stdio.h> and <stdlib.h>, your compiler does not have a function prototype for malloc, so it is guessing (incorrectly) about the size of the argument to malloc. Instead of using the type size_t, it is assuming an int. To avoid this problem, always choose Require Prototypes on the Language Settings page of your THINK C Options dialog. With that option selected, this would have resulted in a compilation error instead of a runtime error.

Q: Can I use Quickdraw GX with TCL and VA?

A: Yes, it is possible. For starters, initialize Quickdraw GX in CApp::ICApp() in the following manner:


void  CApp::ICApp()
{
 Ix_CApp(4, 24000L, 20480L, 2048L);
 
    // Initialize your own application data here.

 long graphicsHeapSize = 375; // about 25K

 theGXClient = GXNewGraphicsClient( nil, gGraphicsHeapSize *   1024L, 
0L );
 FailNIL( theGXClient );
 GXEnterGraphics();
 
 assert (GXGetGraphicsError( nil ) !=  out_of_memory);   
 // etc.
}

You will need to declare theGXClient as a member function of CApp of type gxGraphicsClient and include the proper header files in CApp.cp. Additionally, it is a good idea to override CApplication::InspectSystem() to check for the presence of QuickDraw GX. It is considered programmer error to call GX routines without verifying via Gestalt() that GX is present. Finally, override CApplication::Exit() in CApp using the following example:

 void CApp::Exit( )
 {
 GXExitGraphics();
 GXDisposeGraphicsClient( myGXClient );
    // etc...
 x_CApp::Exit();
 }

Q: Why does printf crash when I use it in a TCL project? Is there any way to use TCL in conjunction with the console?

A: Yes, there is. The console package does some special initialization that needs to be done in place of the standard toolbox initialization that TCL does. To use the console with TCL, you should override CApplication::InitToolbox(), like this:

 void CApp::InitToolbox( void )
 {
 cout<< "Initialize console package"<<endl;
 }

The call to cout in place of the standard CApplication::InitToolbox() will initialize the toolbox and the console package. This will enable the use of printf and iostreams routines with the console window. Note: You will need to add the IOStreams library and replace ANSI_small with ANSI.

Q: How do I make an application (or the Project Manager) multi-session, so I can throw it on a server and have several users run the application off of the server at the same time?

A: Use ResEdit to open the application you want to share. From the File menu, choose Get File Info for the application, and click the Sharable flag. Save the application, and Quit ResEdit. Your application can now be used by multiple users simultaneously.

Q: I am working on an application that prompts the user for a password. I need to be able to filter the edit text so that it displays bullet characters instead of the actual password. Is there an easy way to do this in VA?

Example of an Application that uses a Password Edit Text Filter

A: Yes. You must first create a derived class from CDialogText in VA. Then override the DoKeyDown() method in the following manner:

void  cPasswordText::DoKeyDown( char theChar, Byte keyCode,
   EventRecord *macEvent )
{
 Boolean pass = TRUE;
 short  ID;
 Str255 textString;

 switch (theChar)
 {
 case TCL_CR:
 case '\t':
 case kEnterKey:
 pass = FALSE;
 break;
 case kEscapeOrClear:
 if (keyCode == KeyEscape) pass = FALSE;
 break;
 default:
 GetTextString( textString );
 if ( !  isalnum( theChar ))// pass spaces and delete keys
 {
 inherited::DoKeyDown( theChar, keyCode, macEvent );
 pass = false;
 } 
 }
 if (pass)
 {
 textString[0]++;
 textString[textString[0]] = ‘•’;
 SetTextString( textString );
 
// add code to store actual characters typed here

 if (itsTypingTask && itsTypingTask->CanStillType())
 {
 ID = this->ID;
 BroadcastChange(dialogTextChanged, &ID);
 }
 }
 else
 itsSupervisor->DoKeyDown(theChar, keyCode, macEvent);
}

Q: Can I use STL with Symantec C++?

A: Yes, Symantec C++ supports a modified version of STL. For best results, you need to use 8.0.3 of our Symantec C++ compiler. Patches are available via anonymous ftp at ftp://devtools.symantec.com/updaters/sym.cpp-va-tcl.update.

Q: I’m using your new Pascal Universal Headers for THINK Pascal and I get pages of link errors. Why is this?

A: When you use our Universal Headers, you need to make sure that you have the proper uses statements for the toolbox routines that you are using. You can no longer rely on the correct uses being used automatically. You will need to be very conscious of which interface file you use. See the Readme for further details.

Q: I call the Place() method of a CPanorama object I have created in the Main view using VA, but nothing happens. Place() works fine for other objects derrived from CPane. What gives?

A: Place(), inherited from CPane, sets the data members hEncl and vEncl, which indicate the pane’s position relative to itsEnclosure. In the case of CIconButton, for instance, itsEnclosure will be the itsMainPane member of the Document (itsMainPane is the CPanorama object that acts as the background of every view of type Main Window). Hence, calling the Place() member of a CIconButton visibly moves the button relative to the window. In the case of a CPanorama object however, itsEnclosure is actually itsScrollPane. A panorama’s Place() function will not visibly change its postion. You should instead call itsScrollPane-> Place() to move a panorama relative to the window.

If you have a question or topic for a future Top Ten article, please send us your ideas. If you have found an answer to an obscure problem that has been eluding you, or you have a stumper, send it to topten@devtools.symantec.com. If we choose to use your question in our column, your submission will be immortalized in print, and we will mail you a cool Symantec T-shirt.

Special thanks to: Glenn Austin, Mark Baldwin, Levi Brown, Craig Conner, Andy McFarland, Christopher Prinos, and Kevin Quah.

 
AAPL
$119.00
Apple Inc.
+1.40
MSFT
$47.75
Microsoft Corpora
+0.28
GOOG
$540.37
Google Inc.
-0.71

MacTech Search:
Community Search:

Software Updates via MacUpdate

Skype 7.2.0.412 - Voice-over-internet ph...
Skype allows you to talk to friends, family and co-workers across the Internet without the inconvenience of long distance telephone charges. Using peer-to-peer data transmission technology, Skype... Read more
HoudahSpot 3.9.6 - Advanced file search...
HoudahSpot is a powerful file search tool built upon MacOS X Spotlight. Spotlight unleashed Create detailed queries to locate the exact file you need Narrow down searches. Zero in on files Save... Read more
RapidWeaver 6.0.3 - Create template-base...
RapidWeaver is a next-generation Web design application to help you easily create professional-looking Web sites in minutes. No knowledge of complex code is required, RapidWeaver will take care of... Read more
iPhoto Library Manager 4.1.10 - Manage m...
iPhoto Library Manager lets you organize your photos into multiple iPhoto libraries. Separate your high school and college photos from your latest summer vacation pictures. Or keep some photo... Read more
iExplorer 3.5.1.9 - View and transfer al...
iExplorer is an iPhone browser for Mac lets you view the files on your iOS device. By using a drag and drop interface, you can quickly copy files and folders between your Mac and your iPhone or... Read more
MacUpdate Desktop 6.0.3 - Discover and i...
MacUpdate Desktop 6 brings seamless 1-click installs and version updates to your Mac. With a free MacUpdate account and MacUpdate Desktop 6, Mac users can now install almost any Mac app on macupdate.... Read more
SteerMouse 4.2.2 - Powerful third-party...
SteerMouse is an advanced driver for USB and Bluetooth mice. It also supports Apple Mighty Mouse very well. SteerMouse can assign various functions to buttons that Apple's software does not allow,... Read more
iMazing 1.1 - Complete iOS device manage...
iMazing (was DiskAid) is the ultimate iOS device manager with capabilities far beyond what iTunes offers. With iMazing and your iOS device (iPhone, iPad, or iPod), you can: Copy music to and from... Read more
PopChar X 7.0 - Floating window shows av...
PopChar X helps you get the most out of your font collection. With its crystal-clear interface, PopChar X provides a frustration-free way to access any font's special characters. Expanded... Read more
OneNote 15.4 - Free digital notebook fro...
OneNote is your very own digital notebook. With OneNote, you can capture that flash of genius, that moment of inspiration, or that list of errands that's too important to forget. Whether you're at... Read more

Latest Forum Discussions

See All

Lucha Amigos (Games)
Lucha Amigos 1.0 Device: iOS Universal Category: Games Price: $1.99, Version: 1.0 (iTunes) Description: Forget Ninja Turtles, and meet Wrestlers Turtles! Crazier, Spicier and…Bouncier! Sling carapaces of 7 Luchadores to knock all... | Read more »
Raby (Games)
Raby 1.0.3 Device: iOS Universal Category: Games Price: $2.99, Version: 1.0.3 (iTunes) Description: ***WARNING - Raby runs on: iPhone 5, iPhone 5C, iPhone 5S, iPhone 6, iPhone 6 Plus, iPad Mini Retina, iPad Mini 3, iPad 4, iPad Air,... | Read more »
Oddworld: Stranger's Wrath (Games)
Oddworld: Stranger's Wrath 1.0 Device: iOS Universal Category: Games Price: $5.99, Version: 1.0 (iTunes) Description: ** PLEASE NOTE: Oddworld Stranger's Wrath requires at least an iPhone 4S, iPad 2, iPad Mini or iPod Touch 5th gen... | Read more »
Bounce On Back (Games)
Bounce On Back 1.0 Device: iOS Universal Category: Games Price: $2.99, Version: 1.0 (iTunes) Description: | Read more »
Dwelp (Games)
Dwelp 1.0 Device: iOS Universal Category: Games Price: $.99, Version: 1.0 (iTunes) Description: === 50% off for a limited time, to celebrate release === Dwelp is an elegant little puzzler with a brand new game mechanic. To complete a... | Read more »
Make Way for Fat Chicken, from the Maker...
Make Way for Fat Chicken, from the Makers of Scrap Squad Posted by Jessica Fisher on November 26th, 2014 [ permalink ] Relevant Games has announced they will be releasing their reverse tower defense game, | Read more »
Tripnary Review
Tripnary Review By Jennifer Allen on November 26th, 2014 Our Rating: :: TRAVEL BUCKET LISTiPhone App - Designed for the iPhone, compatible with the iPad Want to create a travel bucket list? Tripnary is a fun way to do exactly that... | Read more »
Ossian Studios’ RPG, The Shadow Sun, is...
Ossian Studios’ RPG, The Shadow Sun, is Now Available for $4.99 Posted by Jessica Fisher on November 26th, 2014 [ permalink ] Universal App - Designed for iPhone and iPad | Read more »
Mmmm, Tasty – Having the Angry Birds for...
The very first Angry Birds debuted on iOS back in 2009. When you sit back and tally up the number of Angry Birds games out there and the impact they’ve had on pop culture as a whole, you just need to ask yourself: “How would the birds taste... | Read more »
Rescue Quest Review
Rescue Quest Review By Jennifer Allen on November 26th, 2014 Our Rating: :: PATH BASED MATCH-3Universal App - Designed for iPhone and iPad Guide a wizard to safety by matching gems. Rescue Quest might not be an entirely original... | Read more »

Price Scanner via MacPrices.net

Black Friday: 15% off iTunes Gift Cards
Staples is offering 15% off $50 and $100 iTunes Gift Cards on their online store as part of their Black Friday sale. Click here for more information. Shipping is free. Best Buy is offering $100... Read more
BEVL Releases Dock Tailored for iPhone 6 and...
Seattle based BEVL has released their first product: an iPhone dock that is divergent in build quality, rock-solid function and visual simplicity to complement the iPhone. BEVL is now accepting... Read more
Black Friday: $150 off 13-inch Retina MacBook...
 Best Buy has 13-inch 2.6GHz Retina MacBook Pros on sale for $150 off MSRP on their online store as part of their Black Friday sale. Choose free shipping or free local store pickup (if available).... Read more
Black Friday: $300 off 15-inch Retina MacBook...
 B&H Photo has the new 2014 15″ Retina MacBook Pros on sale for $300 off MSRP as part of their Black Friday sale. Shipping is free, and B&H charges NY sales tax only: - 15″ 2.2GHz Retina... Read more
Black Friday: Up to $140 off MacBook Airs, fr...
 B&H Photo has 2014 MacBook Airs on sale for up to $140 off MSRP as part of their Black Friday sale. Shipping is free, and B&H charges NY sales tax only: - 11″ 128GB MacBook Air: $799 $100... Read more
Black Friday: 13-inch 2.5GHz MacBook Pro on s...
 Best Buy has the 13″ 2.5GHz MacBook Pro on sale for $899.99 on their online store as part of their Black Friday sale. Choose free shipping or free instant local store pickup (if available). Their... Read more
Black Friday: 21-inch 1.4GHz iMac on sale for...
 Best Buy has the 21″ 1.4GHz iMac on sale for $899.99 on their online store as part of their Black Friday sale. Their price is $200 off MSRP. Choose free shipping or free local store pick up. Price... Read more
Black Friday iPad Air 2 sale prices, $100 off...
 Best Buy has iPad Air 2s on sale for $100 off MSRP on their online store for Black Friday. Choose free shipping or free local store pickup (if available). Sale prices available for online orders... Read more
2014 1.4GHz Mac mini on sale for $449, save $...
 B&H Photo has the new 1.4GHz Mac mini on sale for $449.99 including free shipping plus NY tax only. Their price is $50 off MSRP, and it’s the lowest price available for this new model. Adorama... Read more
Early Black Friday pricing on 27-inch 5K iMac...
 B&H Photo continues to offer Black Friday sale prices on the 27″ 3.5GHz 5K iMac, in stock today and on sale for $2299 including free shipping plus NY sales tax only. Their price is $200 off MSRP... Read more

Jobs Board

*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
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* Retail - Multiple Positions (US) - A...
Sales Specialist - Retail Customer Service and Sales Transform Apple Store visitors into loyal Apple customers. When customers enter the store, you're also the 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
*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
All contents are Copyright 1984-2011 by Xplain Corporation. All rights reserved. Theme designed by Icreon.