TweetFollow Us on Twitter

HyperCom
Volume Number:7
Issue Number:6
Column Tag:Tools of the Trade

HyperCom: HC 2.0 Networking

By Dave Kelly, MacTutor Editorial Board

HyperCom™: HyperCard 2.0 Network

Communications the easy way!

HyperCard has invaded the AppleTalk network with HyperCom™ 2.0 from GAVA Corporation. HyperCom is so easy to use that it seems like a natural part of HyperTalk. In fact, HyperCom is a set of extendable XCMDs and XFCNs that take care of all the details of network communications. All that’s left for you is to develop your own HyperTalk scripts to create network software for nearly any purpose.

The best thing about HyperCom is how much fun you can have with it. Programming with HyperCom is not a drudgery; it doesn’t leave you with hours trying to figure how to get it to work. It’s simplicity is the key. There is only one XCMD that is used to communicate with other HyperCom users over AppleTalk.

HyperCard 2.0’s ability to open multiple windows at the same time makes it possible to use HyperCom’s XCMDs and XFCNs without moving them to your stack. You can set up your stack to include the HyperCom stack in the current inheritance path by using the HyperTalk command:

start using stack HyperCom

This statement allows you to access handlers in the HyperCom stack without having to modify your Home stack or your copy of HyperCard.

HyperCom has one command, “Tell”. “Tell” has three special forms that can be used to find the names of other registered HyperCom users. 1) tell who puts a delimited list of all HyperCom users on the network into “the result”. Your scripts can evaluate the list in “the result” to decide who you want to send your message to. 2) tell whom shows a pop-up menu with all the HyperCom users listed. It returns the selected user name in “the result”. 3) tell whol brings up a dialog box with a list of all HyperCom users on the network. One or more users may be selected and returned in “the result”.

Once you know who you will be sending the message to, you use “Tell” and the name (or names) of the users and send your message or messages. In my example, I use tell whol to ask for a network user.

 tell whol,,”Set clock of which Mac:”

Then I use the following lines to tell the user to execute the XCMD “SetTimeDate” installed in the user’s stack.

--1

 put the result into them
 put the seconds into standardtime
 tell them, “SetTimeDate”, standardtime

The purpose of my example is to use HyperCom communications to synchronize the clock on every computer on the network with a single computer. Since HyperCard doesn’t have a command to set the clock, I made one. The Pascal source code is included at the end of this column. After the XCMD is compiled and installed into a stack, clicking on a single button brings up the user list to select which users’ clock you want to set. Then the script gets the time from the HyperTalk seconds function and sends it to the user with the command to use the SetTimeDate XCMD to set the clock.

Each copy of HyperCom is serialized and set up for a specific number of users. The basic HyperCom package supports 2 users, but there is technically no limit on the number of users. HyperCom has been used at sites with as many as 600 users over several zones. Some schools have 40-50 users on a single zone. HyperCom does not get slowed down with more users. Yet, it makes sense that if the implementation uses a single server, where the server seeks information and sends it back to the requesting station, that the speed would be affected. Of course, then, the speed is dependent on how long it takes to process each query. Database types of applications with 10-20 users are not uncommon. HyperCom does queue up messages, and allows long scripts to execute new messages to be executed by calling “Tell” in the body of the handler. Because the limitation with HyperCom is not with the network traffic, speed problems can be solved by distributing the data or processing on several machines, or using faster processors.

GAVA also provides other XCMDs and XFCNs that can be used to extend the capabilities of HyperCom. These are very useful efficiency savers. For example, with the sendResource XCMD, the SetTimeDate XCMD could be sent to the user, used to set the clock, then deleted when done. I don’t have the sendResource XCMD so I couldn’t try it. The sendFileXCMD sends files over the network. The sendSound XCMD sends a sound to be played by the receiving machine. Other commands include sendCard, sendClipboard, sendScreen and the question XFCN to evaluate expressions on a remote Macintosh.

The manual for HyperCom is brief (29 pages) and get right to the point, but since the commands are simple not much explanation is required. It does a good job in telling what the tell command does, but it leaves out a few minor details. For example, it didn’t say what to expect if the user didn’t select any users, but used the cancel button instead. Since HyperCom is simple to use, these omissions can be figured out without too much trouble.

There are some sample stacks included with HyperCom. On of the examples is a network checkers game. My son really loved that one. The examples were designed to give you some ideas of what HyperCom can do.

HyperCom is ideally suited for anyone that needs network communication capability in HyperCard. Happy Networking!

HyperCom™ is available from:

GAVA Corporation

1001 4th Ave Plaza, Suite 3200

Seattle, WA. 98154

Phone: 800-767-0647 or 206-223-4282

FAX 206-223-0653

AppleLink GAVA

InterNet: GAVA@applelink.apple.com

CompuServe: 76174,221

GENIE: GAVA

Prices:

HyperCom 2.0 (for 2 users) $99.95

HyperCom 2.0 with HyperCard 2.0 $129.95

Additional license for HyperCom $50.00

Zone license for HyperCom $499.95

sendFile XCMD $35.00, sendSound XCMD $35.00

sendCard XCMD $35.00, sendClipboard $35.00

sendScreen XCMD $35.00, question XFCN $35.00

sendResource XCMD $35.00

Requires: a Macintosh computer with System 6.0.5 or newer, 1MB RAM and a hard disk.

SOFTWARE UPDATES

Be sure to check for upgrades to your applications. Many of these are already available on AppleLink, America On-Line and other services. Some of the new versions which have been available for some time now are: Now Utilities version 2.0.3, Suitcase II version 1.2.9, and QUED/M 2.09.

{ HyperCard SetTimeDate XCMD}
{ by Dave Kelly                    }
unit SetTimeDateUnit;
{ This project handles the SetTimeDate command }
interface
 uses
{include the HyperCard interfaces in the XFCN/CMD}
 HyperXCmd;
 procedure main (paramPtr: XCmdPtr);
{ the entry point for the XCMD/XFCN }
implementation
 procedure main;
 procedure Fail (errMsg: Str255);
{ return a given error message to HyperCard }
 begin
 paramPtr^.returnValue := PasToZero(paramPtr, errMsg);
 {Set return value of the paramBlock to given message. }
 exit(main); {exit the routine }
 end;
 procedure Setthetime (paramPtr: XCmdPtr);
 var
 str: str255;
 TheTimeDate: longint;
 Error: OSErr;
 begin
 if (paramPtr^.paramCount <> 1) then
 Fail(‘%bad parameters’);
 ZeroToPas(paramPtr, paramPtr^.params[1]^, str);
{ convert the location to a string }
 TheTimeDate := StrToNum(paramPtr, str);
 { and thence to a longint }
 Error := SetDateTime(TheTimeDate);
 { if the handle is empty, then return an error}
 if Error <> noErr then
 Fail(‘DateTime not changed!’);
 end;
 begin
 Setthetime(paramPtr);
{entry point; call the Setthetime routine}
 end;
end.

STACK SCRIPT:
-- This product is for licensed HyperCom™ users only
on openstack
  global userchecktime
  start using stack HyperCom
  tell who
  put the result into card field “HyperCom Users”
  put the seconds into userchecktime
  pass openstack
end openstack
on startstack
  global userchecktime
  start using stack HyperCom
  tell who
  put the result into card field “HyperCom Users”
  put the seconds into userchecktime
  pass startstack
end startstack
on idle
  global userchecktime
  put (the seconds - userchecktime) into elapsedtime
  if (elapsedtime>=15) then
    tell who
    put the result into card field “HyperCom Users”
    put the seconds into userchecktime
  end if
  put the long time into card field “Time”
  put the long date into card field “Date”
  pass idle
end idle

CARD BUTTON:
on mouseup
  tell whol,,”Set clock of which Mac:”
  if the first line of the result is empty then exit mouseup
  put the result into them
  put the seconds into standardtime
  tell them, “SetTimeDate”, standardtime
end mouseup

 

Community Search:
MacTech Search:

Software Updates via MacUpdate

NetNewsWire 4.0.0 - RSS and Atom news re...
NetNewsWire is the best way to keep up with the sites and authors you read most regularly. Let NetNewsWire pull down the latest articles, and read them in a distraction-free and Mac-like way. Native... Read more
MacUpdate Desktop 6.0.6 - Search and ins...
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
ForkLift 2.6.5 - Powerful file manager:...
ForkLift is a powerful file manager and ferociously fast FTP client clothed in a clean and versatile UI that offers the combination of absolute simplicity and raw power expected from a well-executed... Read more
Drive Genius 4.1.0 - Powerful system uti...
Drive Genius 4 gives you faster performance from your Mac while also protecting it. The award-winning and improved DrivePulse feature alerts you to hard drive issues before they become major problems... Read more
OnyX 2.9.7 - Maintenance and optimizatio...
OnyX is a multifunctional utility for OS X. It allows you to verify the startup disk and the structure of its System files, to run miscellaneous tasks of system maintenance, to configure the hidden... Read more
DEVONthink Pro 2.8.5 - Knowledge base, i...
DEVONthink Pro is your essential assistant for today's world, where almost everything is digital. From shopping receipts to important research papers, your life often fills your hard drive in the... Read more
Backblaze 4.0.1.878 - 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
Apple Remote Desktop Client 3.8.4 - Clie...
Note: Apple Remote Desktop Client is available only through Software Update (the Updates tab in App Store.app. Apple Remote Desktop Client is the best way to manage the Mac computers on your network... Read more
Merlin Project 3.0.7.39619 - Project man...
Merlin Project is for those of you who are responsible for complex projects. Simple lists of tasks won't suffice. Good planning raises questions about the dependencies of activities on each other,... Read more
Tidy Up 4.1.0 - Find duplicate files and...
Tidy Up is a complete duplicate finder and disk-tidiness utility. With Tidy Up you can search for duplicate files and packages by the owner application, content, type, creator, extension, time... Read more

Carbo - Handwriting in the Digital Age...
Carbo - Handwriting in the Digital Age 1.0 Device: iOS Universal Category: Productivity Price: $3.99, Version: 1.0 (iTunes) Description: | Read more »
The Apple Watch isn't Great as a Fi...
| Read more »
Show the World What You See With Stre.am...
Live broadcasting is getting popular on mobile devices, which is why you can now get Stre.am, by Infinite Takes. [Read more] | Read more »
PhotoTime's 2.1 Update Adds Apple W...
The latest PhotoTime update is adding even more functionality to the handy photo organizing app. Yep, including Apple Watch support. [Read more] | Read more »
Oh My Glob! Adventure Time Puzzle Quest...
Finn and Jake are taking over D3 Go!'s popular puzzle game series in the upcoming Adventure Time Puzzle Quest. [Read more] | Read more »
Earthcore: Shattered Elements - Tips, Tr...
At first glance, Earthcore: Shattered Elements seems like a rather simple card-battling game. Once you’re introduced to skills that will change quite a bit. Even more so once you start to acquire hero cards. But it’s not so complicated that we... | Read more »
Dungeon999F (Games)
Dungeon999F 1.33 Device: iOS Universal Category: Games Price: $.99, Version: 1.33 (iTunes) Description: "The game you must play at least once in your life!" "The game with potential of million downloads globally!" ...is what the... | Read more »
Mixels Rush - Use Mixes, Maxes and Murps...
Mixels Rush - Use Mixes, Maxes and Murps to Outrun the Nixels 1.0.0 Device: iOS Universal Category: Games Price: $2.99, Version: 1.0.0 (iTunes) Description: Use awesome new Mixels and make crazy combinations to beat the annoying... | Read more »
Battles of the Ancient World II (Games)
Battles of the Ancient World II 1.0 Device: iOS Universal Category: Games Price: $2.99, Version: 1.0 (iTunes) Description: | Read more »
Sword Of Xolan (Games)
Sword Of Xolan 1.0.4 Device: iOS Universal Category: Games Price: $.99, Version: 1.0.4 (iTunes) Description: Sword of Xolan is an action platformer game that includes the juice of pixel art style. Xolan is a young and brave man who... | Read more »

Price Scanner via MacPrices.net

Sale! 16GB iPad mini 3 for $349, save $50
B&H Photo has the 16GB iPad mini 3 WiFi on sale for $349 including free shipping plus NY sales tax only. Their price is $50 off MSRP, and it’s the lowest price available for this model. Read more
Price drop on 2014 15-inch Retina MacBook Pro...
B&H Photo has dropped prices on 2014 15″ Retina MacBook Pros by $200. Shipping is free, and B&H charges NY sales tax only: - 15″ 2.2GHz Retina MacBook Pro: $1799.99 save $200 - 15″ 2.5GHz... Read more
Will iOS 9 Finally Bring Productivity Friendl...
Ah, the irony. From its original announcement in 2010, Apple has doggedly insisted that the iPad remain “simple,” thus arbitrarily limiting its considerable potential as a content creation and... Read more
13-inch 2.5GHz MacBook Pro (refurbished) avai...
The Apple Store has Apple Certified Refurbished 13″ 2.5GHz MacBook Pros available for $829, or $270 off the cost of new models. Apple’s one-year warranty is standard, and shipping is free: - 13″ 2.... Read more
Mac Pros on sale for up to $260 off MSRP
B&H Photo has Mac Pros on sale for up to $260 off MSRP. Shipping is free, and B&H charges sales tax in NY only: - 3.7GHz 4-core Mac Pro: $2799, $200 off MSRP - 3.5GHz 6-core Mac Pro: $3719.99... Read more
Save up to $600 with Apple refurbished Mac Pr...
The Apple Store has Apple Certified Refurbished Mac Pros available 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
Apple drops price on refurbished 15-inch 2.2G...
The Apple Store has dropped their price on the Apple Certified Refurbished 2014 15″ 2.2GHz Retina MacBook Pro to $1609, $390 off original MSRP. Apple’s one-year warranty is included, and shipping is... Read more
Apple restocks refurbished Mac minis for up t...
The Apple Store has restocked Apple Certified Refurbished 2014 Mac minis, with models available starting at $419. Apple’s one-year warranty is included with each mini, and shipping is free: - 1.4GHz... Read more
Cover For iPhone Helps You Create Beautiful P...
Taking photos, editing and sharing them is one of the things most of people do on their iPhones for fun, especially if they’re users of social media. Unfortunately, many iOS photo-editing solutions... Read more
Password Keyboard 1.0 For iOS Handles Logins...
Pfaeffikon, Switzerland based Power APP has introduced Password Keyboard 1.0.0, their new password utility developed for iPhone, iPad and iPod touch devices. Password Keyboard is designed to simplify... Read more

Jobs Board

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
Visual Merchandise Manager %u2013 Accessories...
…to be part of an incredible team. Imagine what you could do here. At Apple , great ideas have a way of becoming reality very quickly. Our Accessories assortment makes Read more
*Apple* Solutions Consultant - Retail Sales...
**Job Summary** As an Apple Solutions Consultant (ASC) you are the link between our customers and our products. Your role is to drive the Apple business in a retail Read more
*Apple* Solutions Consultant - Retail Sales...
**Job Summary** The ASC is an Apple employee who serves as the Apple business manager and influencer in a hyper-business critical Reseller's store which delivers Read more
Technical Project Manager - *Apple* Pay - A...
**Job Summary** Apple Pay is seeking an experienced technical PM…manage the rollout of features to merchants for the Apple Pay platform in the US Within this role Read more
All contents are Copyright 1984-2011 by Xplain Corporation. All rights reserved. Theme designed by Icreon.