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

A Better Finder Rename 10.00b1 - File, p...
A Better Finder Rename is the most complete renaming solution available on the market today. That's why, since 1996, tens of thousands of hobbyists, professionals and businesses depend on A Better... Read more
CrossOver 14.1.6 - Run Windows apps on y...
CrossOver can get your Windows productivity applications and PC games up and running on your Mac quickly and easily. CrossOver runs the Windows software that you need on Mac at home, in the office,... Read more
Printopia 2.1.14 - Share Mac printers wi...
Run Printopia on your Mac to share its printers to any capable iPhone, iPad or iPod Touch. Printopia will also add virtual printers, allowing you to save print-outs to your Mac and send to apps.... Read more
Google Drive 1.24 - File backup and shar...
Google Drive is a place where you can create, share, collaborate, and keep all of your stuff. Whether you're working with a friend on a joint research project, planning a wedding with your fiancé, or... Read more
Chromium 45.0.2454.85 - Fast and stable...
Chromium is an open-source browser project that aims to build a safer, faster, and more stable way for all Internet users to experience the web. Version 45.0.2454.85: Note: Does not contain the "... Read more
OmniFocus 2.2.5 - GTD task manager with...
OmniFocus helps you manage your tasks the way that you want, freeing you to focus your attention on the things that matter to you most. Capturing tasks and ideas is always a keyboard shortcut away in... Read more
iFFmpeg 5.7.1 - Convert multimedia files...
iFFmpeg is a graphical front-end for FFmpeg, a command-line tool used to convert multimedia files between formats. The command line instructions can be very hard to master/understand, so iFFmpeg does... Read more
VOX 2.6 - Music player that supports man...
VOX is a beautiful music player that supports many filetypes. The beauty is in its simplicity, yet behind the minimal exterior lies a powerful music player with a ton of features and support for all... Read more
Box Sync 4.0.6567 - Online synchronizati...
Box Sync gives you a hard-drive in the Cloud for online storage. Note: You must first sign up to use Box. What if the files you need are on your laptop -- but you're on the road with your iPhone? No... Read more
Carbon Copy Cloner 4.1.4 - Easy-to-use b...
Carbon Copy Cloner backups are better than ordinary backups. Suppose the unthinkable happens while you're under deadline to finish a project: your Mac is unresponsive and all you hear is an ominous,... Read more

You Can Play Madfinger Games' Unkil...
Madfinger Games - probably best known for the Dead Trigger series - has officially launched their newest zombie shooter (that isn't called Dead Trigger), named Unkilled. [Read more] | Read more »
KORG iELECTRIBE for iPhone (Music)
KORG iELECTRIBE for iPhone 1.0.1 Device: iOS iPhone Category: Music Price: $9.99, Version: 1.0.1 (iTunes) Description: ** 50% OFF Special Launch Sale - For a Limited Time **The ELECTRIBE reborn in an even smaller form A full-fledged... | Read more »
I am Bread (Games)
I am Bread 1.0 Device: iOS Universal Category: Games Price: $4.99, Version: 1.0 (iTunes) Description: ‘I am Bread’ is the latest quirky adventure from the creators of 'Surgeon Simulator', Bossa Studios. This isn't the best thing... | Read more »
Rock(s) Rider - HD Edition (Games)
Rock(s) Rider - HD Edition 1.0.0 Device: iOS Universal Category: Games Price: $2.99, Version: 1.0.0 (iTunes) Description: *** PLEASE NOTE: Compatible with iPhone 4s, iPad 2, iPad mini, iPod touch (5th generation) or newer *** Do you... | Read more »
Rebuild 3: Gangs of Deadsville (Games)
Rebuild 3: Gangs of Deadsville 1.0 Device: iOS Universal Category: Games Price: $4.99, Version: 1.0 (iTunes) Description: It's been a few years since the zombpocalypse turned the world's cities into graveyards and sent the few... | Read more »
Power Ping Pong (Games)
Power Ping Pong 1.0 Device: iOS Universal Category: Games Price: $4.99, Version: 1.0 (iTunes) Description: Do you wield your bat with zen-like focus or do your balls of fury give you a killer spin? Table tennis goes mobile with a... | Read more »
Z.O.N.A Project X (Games)
Z.O.N.A Project X 1.00 Device: iOS Universal Category: Games Price: $1.99, Version: 1.00 (iTunes) Description: Z.O.N.A Project X - shooter in the post-apocalyptic world. | Read more »
Trick Shot (Games)
Trick Shot 1.0.6 Device: iOS Universal Category: Games Price: $1.99, Version: 1.0.6 (iTunes) Description: A game where all you have to do is throw a ball into a box, simple? Trick Shot is a minimalist physics puzzler with 90 levels... | Read more »
VoxelCity (Games)
VoxelCity 1.0.2 Device: iOS Universal Category: Games Price: $1.99, Version: 1.0.2 (iTunes) Description: Looking for a new city builder? Tired of social media anti-games with no strategy? Look no further! NO IAP EVER! VoxelCity is a... | Read more »
Goat Simulator MMO Simulator (Games)
Goat Simulator MMO Simulator 1.0 Device: iOS Universal Category: Games Price: $4.99, Version: 1.0 (iTunes) Description: ** IMPORTANT - SUPPORTED DEVICESiPhone 4S, iPad 2, iPod Touch 5 or better.** Coffee Stain Studios brings next-gen... | Read more »

Price Scanner via MacPrices.net

Near-Office Input Functionality Virtually Any...
Today Logitech introduced the Logitech K380 Multi-Device Bluetooth Keyboard and the Logitech M535 Bluetooth Mouse, giving users the freedom to work on any device, most anywhere. According to... Read more
College Student Deals: Additional $100 off Ma...
Take an additional $100 off all MacBooks and iMacs at Best Buy Online with their College Students Deals Savings, valid through September 4, 2015. Anyone with a valid .EDU email address can take... Read more
Will You Buy An iPad Pro? – The ‘Book Mystiqu...
It looks like we may not have to wait much longer to see what finally materializes as a new, larger-panel iPad (Pro/Plus?) Usually reliable Apple product prognosticator KGI Securities analyst Ming-... Read more
eFileCabinet Announces SMB Document Managemen...
Electronic document management (EDM) eFileCabinet, Inc., a hosted solutions provider for small to medium businesses, has announced that its SecureDrawer and eFileCabinet Online services will be... Read more
WaterField Designs Unveils American-Made, All...
San Francisco’s WaterField Designs today unveiled their all-leather Cozmo 2.0 — an elegant attach laptop bag with carefully-designed features to suit any business environment. The Cozmo 2.0 is... Read more
Apple’s 2015 Back to School promotion: Free B...
Purchase a new Mac or iPad at The Apple Store for Education and take up to $300 off MSRP. All teachers, students, and staff of any educational institution qualify for the discount. Shipping is free,... Read more
128GB MacBook Airs on sale for $100 off MSRP,...
B&H Photo has 11″ & 13″ MacBook Airs with 128GB SSDs on sale for $100 off MSRP. Shipping is free, and B&H charges NY sales tax only: - 11″ 1.6GHz/128GB MacBook Air: $799.99, $100 off MSRP... 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
27-inch 3.2GHz iMac on sale for $1679, save $...
B&H Photo has the 27″ 3.2GHz iMac on sale for $1679.99 including free shipping plus NY sales tax only. Their price is $120 off MSRP. Read more
Apple and Cisco Partner to Deliver Fast-Lane...
Apple and Cisco have announced a partnership to create a “fast lane” for iOS business users by optimizing Cisco networks for iOS devices and apps. The alliance integrates iPhone with Cisco enterprise... Read more

Jobs Board

*Apple* Desktop Analyst - KDS Staffing (Unit...
…field and consistent professional recruiting achievement. Job Description: Title: Apple Desktop AnalystPosition Type: Full-time PermanentLocation: White Plains, NYHot Read more
Simply Mac *Apple* Specialist- Repair Techn...
Simply Mac is the greatest premier retailer of Apple products expertise in North America. We're looking for dedicated individuals to provide personalized service and Read more
Simply Mac *Apple* Specialist- Service Repa...
Simply Mac is the greatest premier retailer of Apple products expertise in North America. We're looking for dedicated individuals to provide personalized service and Read more
*Apple* Desktop Analyst - KDS Staffing (Unit...
…field and consistent professional recruiting achievement. Job Description: Title: Apple Desktop AnalystPosition Type: Full-time PermanentLocation: White Plains, NYHot Read more
Simply Mac- *Apple* Specialist- Store Manag...
Simply Mac is the largest premier retailer for Apple products and solutions. We're looking for dedicated individuals with a passion to simplify and enhance the Read more
All contents are Copyright 1984-2011 by Xplain Corporation. All rights reserved. Theme designed by Icreon.