TweetFollow Us on Twitter

Jan 95 Tips
Volume Number:11
Issue Number:1
Column Tag:Tips & Tidbits

Tips & Tidbits

By Scott T Boyd, Editor

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

TIP OF THE MONTH

Using IOStreams with THINK’s Console

The C++ IOStreams library provides many advantages over the old stdio library in C++. But, one thing I missed from the old stdio library in THINK C (not part of the standard) is using console windows from C++ streams. I wanted to be able to use something like:

 myWindow << myData1 << myData2;

which is more convenient than the fprintf(window, ) form of the old stdio library. It wasn’t immediately obvious if this would work with streams. After a little exploring, it turned out to be pretty easy. Two lines of code is all it takes to create a console window and make it part of a stream.

    // create a std I/O buffer for stream using a console window (created by calling fopenc())
 stdiobuf w1(fopenc());

    // create the stream using the buffer from above
 ostream wout((streambuf *)&w1);

The first line creates a console by calling fopenc() and passes it to the stdiobuf constructor. The console window is used as the FILE * for the stdiobuf instance. Then, we create an output stream (ostream) passing a pointer to a streambuf (in this case a subclass of it, stdiobuf). That’s all. The short program below shows how to create one window and to send output to it using our created stream and our own window. It also sends output to the standard out stream (cout) as a way to differentiate the two.

WindStream.cp

#include <console.h>
#include <stdiostr.h>

void main(void)
{
    // set options for my stream window: 40 columns and title
 console_options.left = 10;
 console_options.ncols = 40;
 console_options.title = "\pMy Window/Stream";

    // create a std I/O buffer for stream using a console window (created by calling fopenc())
 stdiobuf w1(fopenc());

    // create the stream using the buffer from above
 ostream wout((streambuf *)&w1);

    // now we can use wout as an output window...
 wout << "Hello World" << endl;

    // This will go to the standard output console
 console_options.left = 300;
 console_options.title = "\pSystem Console";
 cout << "This is the standard output buffer" << endl;
}

- Manuel A. Pérez, Arlington, VA

Fast Apple Event Factoring

When writing a factored application, that is, an application that sends Apple events to itself in response to user interface actions, writing the send routines can be as difficult as writing the receivers.

This needn’t be the case if you use Jens Alfke’s most excellent AEGizmo’s package. To use it, you write a printf-like string and pass it with arguments to AEBuild. This string can be a little obscure, so here’s the tip: put an AEPrint in the Apple event handler, write an AppleScript equivalent and fire it from the AppleScript editor. AEPrint will print a descriptor that, with a small amount of editing, can be pasted into the factor routine and passed to AEBuild. Making an application recordable takes about ten minutes. Honest!

- Chris Sears, sears@netcom.com

MPW Goes Into The Trash

If you use MPW regularly, sooner or later you will delete a file and really wish you hadn’t. MPW’s Delete command is as unforgiving as its counterparts in DOS and Unix - as soon as you delete something, it’s gone. You can’t just drag deleted files out of the trash.

Be prepared. You can modify MPW’s Delete command so it behaves in a more Finder-like way. With these changes, MPW won’t really delete files, it will move them to the Trash (just as you would do if you were using the Finder). Nothing will really be deleted until you explicitly empty the trash.

First, add this line to MPW’s Startup file (or any UserStartup file):

Alias Delete Move_To_Trash

If you have other aliases established which invoke the Delete command (such as the unix alias rm or the DOS alias del), change them to invoke Move_To_Trash instead.

Next, create this Move_To_Trash file in your MPW Scripts folder:

 
Set Echo 0
 If {#}!=0 # if arg count is not zero
  Set Exit 0

  # Create one uniquely named folder in trash can
  Set folder_name "{Boot}"Trash:MPW.deleted.`date -n`
  NewFolder "{folder_name}"   Dev:Null

  # Move specified items to trash
  For file_name in {"Parameters"}
   Move -y "{file_name}" "{folder_name}"   Dev:Null
  End

  # Leave environment as we found it
  Unset file_name folder_name
  Set Exit 1
 End

Caveats:

1) This is reasonable protection against hastily entered Delete commands, but nothing is fool-proof (because fools can be so clever).

2) None of the built in Delete command line options are correctly supported by Move_To_Trash. If you have MPW scripts that invoke the Delete command with options, you will have to modify the scripts. One method would be remove these options from the script entirely, and just rely on Move_To_Trash. Alternately, you could add these commands at the start and end of your script:

 # First line of script
 # restore built in Delete command
   Unalias Delete

 # Last line of script
 # restore modified Delete command
   Alias Delete Move_To_Trash

If you’re lucky, you’ll spend the few minutes it takes to set this up, then never have to think about it again. But someday you may be glad you took the time. As for me, I wish I had thought of this yesterday morning, before I accidentally deleted 5 hours of work.

- Lee David Rimar
Absoft Corporation

 

Community Search:
MacTech Search:

Software Updates via MacUpdate

VirtualBox 5.1.10 - x86 virtualization s...
VirtualBox is a family of powerful x86 virtualization products for enterprise as well as home use. Not only is VirtualBox an extremely feature rich, high performance product for enterprise customers... Read more
Pixa 1.1.9 - Quickly and easily organize...
Pixa is an image-organizing application. The new app functions well, is easy to use, and helps people organize their images quickly and easily on their computers. For those who prefer not to use the... Read more
Civilization VI 1.0.1 - Next iteration o...
Sid Meier’s Civilization VI is the next entry in the popular Civilization franchise. Originally created by legendary game designer Sid Meier, Civilization is a strategy game in which you attempt to... Read more
Google Chrome 55.0.2883.75 - Modern and...
Google Chrome is a Web browser by Google, created to be a modern platform for Web pages and applications. It utilizes very fast loading of Web pages and has a V8 engine, which is a custom built... Read more
Chromium 55.0.2883.75 - 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 55.0.2883.75: Security fixes: High CVE-2016... Read more
Luminar 1.0.2 - Powerful, adaptive, conf...
Luminar is the new full-featured image editor that adapts to the way you edit photos. Over 300 essential tools to fix, edit, and enhance your photos with comfort. The future of photo editing is here... Read more
Slack 2.3.3 - Collaborative communicatio...
Slack is a collaborative communication app that simplifies real-time messaging, archiving, and search for modern working teams. Version 2.3.3: Fixed window zoom jumping back-and-forth OS X 10.9... Read more
WhatRoute 2.0.10 - Geographically trace...
WhatRoute is designed to find the names of all the routers an IP packet passes through on its way from your Mac to a destination host. It also measures the round-trip time from your Mac to the router... Read more
Luminar 1.0.2 - Powerful, adaptive, conf...
Luminar is the new full-featured image editor that adapts to the way you edit photos. Over 300 essential tools to fix, edit, and enhance your photos with comfort. The future of photo editing is here... Read more
WhatRoute 2.0.10 - Geographically trace...
WhatRoute is designed to find the names of all the routers an IP packet passes through on its way from your Mac to a destination host. It also measures the round-trip time from your Mac to the router... Read more

Latest Forum Discussions

See All

Amateur Surgeon 4 Guide: Become the worl...
It's time to wield your trusty pizza cutter again, as Amateur Surgeon has returned with a whole fresh set of challenges (and some old, familiar ones, too). Starting anew isn't easy, especially when all you have at your disposal is a lighter, the... | Read more »
Le Parker: Sous Chef Extraordinaire (Ga...
Le Parker: Sous Chef Extraordinaire 1.0 Device: iOS Universal Category: Games Price: $2.99, Version: 1.0 (iTunes) Description: | Read more »
Telltale Games really is working on a Gu...
Telltale Games' next episodic adventure is indeed Guardians of the Galaxy. A document tied to the voice actors strike suggested that the project was in the work, but now we have direct confirmation following an announcement at the Game Awards that... | Read more »
Amateur Surgeon returns to iOS and Andro...
Amateur Surgeon and its two sequels disappeared from the App Store some time and it was sad days for all. But now, just in time for the holidays, the Adult Swim favorite makes its joyous return in the shape of Amateur Surgeon 4, a remake with... | Read more »
The best board games on mobile
Sometimes you need to ditch all of the high speed, high action games in favor of something a little more traditional. If you don't feel like parting ways from your mobile device, though, there are still plenty of ways to get that old-school fix.... | Read more »
The best Facebook Messenger Instant Game...
Facebook's new Instant Games is now here, meaning you can play games with your friends directly via Facebook. It's a fun new way to connect with friends, of course, but it's also proving to be a solid gaming experience in its own right, with a... | Read more »
You can now play game's on Facebook...
Facebook launched its new Instant Games platform in an exciting new attempt to engage its user base. As a result, you can now play a number of different games directly through Facebook Messenger. All of these games run with HTML5, meaning you play... | Read more »
Apollo Justice Ace Attorney (Games)
Apollo Justice Ace Attorney 1.00.00 Device: iOS Universal Category: Games Price: $.99, Version: 1.00.00 (iTunes) Description: Court Is Back In Session Star as rookie defense attorney, Apollo Justice, as he visits crime scenes,... | Read more »
KORG iWAVESTATION (Music)
KORG iWAVESTATION 1.0 Device: iOS Universal Category: Music Price: $19.99, Version: 1.0 (iTunes) Description: A revolutionary new world of sound.The Wave Sequence Synthesizer for iPad - KORG iWAVESTATION | Read more »
Don't Grind Guide: Tips for becomin...
Don’t Grind is a surprising, derpy little one touch game with fun hand-drawn graphics. The goal is simple -- get the high score without being chopped to bits. That can be tough when you’re not used to the game, and that’s compounded by the fact... | Read more »

Price Scanner via MacPrices.net

13-inch Silver Touch Bar MacBook Pro in stock...
Amazon has the new 2016 13″ 2.9GHz/256GB Silver Touch Bar MacBook Pro (MLVP2LL/A) in stock today and on sale for $1749 including free shipping. That’s $50 off MSRP, and it’s the lowest price... Read more
Parallels Toolbox 1.3 for Mac Offers 25 Singl...
Parallels has launched Parallels Toolbox 1.3 for Mac, an upgrade that adds five new utilities to the stand-alone application which was released in August and is available exclusively online at http... Read more
OWC Mercury Elite Pro Dual mini Ultra-Portabl...
OWC has introduced the new OWC Mercury Elite Pro Dual mini, a powerful yet ultra-portable dual-drive RAID solution. The new Mercury Elite Pro Dual mini packs phenomenal performance into a small... Read more
Clearance 13-inch Retina MacBook Pros availab...
B&H Photo has clearance 2015 13″ Retina Apple MacBook Pros available for up to $200 off original MSRP. Shipping is free, and B&H charges NY tax only: - 13″ 2.7GHz/128GB Retina MacBook Pro: $... Read more
Roundup of 2016 13-inch 2.0GHz MacBook Pro sa...
B&H has the non-Touch Bar 13″ MacBook Pros in stock today for $50-$100 off MSRP. Shipping is free, and B&H charges NY sales tax only: - 13″ 2.0GHz MacBook Pro Space Gray (MLL42LL/A): $1449 $... Read more
New 13-inch 2.0GHz Space Gray MacBook Pro in...
Adorama has the new 13″ 2.0GHz Space Gray MacBook Pro (non-Touch Bar, MLL42LL/A) in stock for $1499 including a free 3-year AppleCare Protection Plan. Shipping is free, and Adorama charges sales tax... Read more
Finnair Adopts iOS Enterprise iPad Apps from...
Finnair and IBM have announced a first-of-its-kind agreement to utilize iOS enterprise apps from IBM to support the airline’s overall digital transformation. Finnair is focused on Asia-Europe traffic... Read more
Tech21 Launches Evo Go iPhone 7 Case Availabl...
Tech21 has announced the launch of the Evo Go case for Apple iPhone 7 and iPhone 7 Plus, exclusively at T-Mobile. Available online and at participating T-Mobile stores nationwide, Evo Go cases start... Read more
Apple Turns (RED) with More Ways to Join the...
In recognition of World AIDS Day, Apple is offering more ways than ever for customers to join (RED) in its mission to create an AIDS-free generation. Apple is the worlds largest corporate contributor... Read more
Deals on new 15-inch Touch Bar MacBook Pros,...
B&H Photo has new 2016 Apple 15″ Touch Bar MacBook Pro models in stock today with some available for $50 off MSRP, each including free shipping plus NY sales tax only: - 15″ 2.7GHz Touch Bar... Read more

Jobs Board

*Apple* Brand Ambassador (Macy's) - The...
…(T-ROC), is proud of its unprecedented relationship with our partner and client, APPLE ,in bringing amazing" APPLE ADVOCATES"to "non" Apple store locations. Read more
US- *Apple* Store Leader Program - Apple (Un...
…Summary Learn and grow as you explore the art of leadership at the Apple Store. You'll master our retail business inside and out through training, hands-on Read more
*Apple* Retail - Multiple Positions- White P...
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
Automotive Detailer - *Apple* Used Autos -...
We are currently conductinginterviews and will be accepting applications for a part-time detailer. Apple Used Autos is a great place to work andstart a career. We 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
All contents are Copyright 1984-2011 by Xplain Corporation. All rights reserved. Theme designed by Icreon.