TweetFollow Us on Twitter

Jan 89 Mousehole
Volume Number:5
Issue Number:1
Column Tag:Mousehole Report

Mousehole Report

By Rusty Hodge & Larry Nedry, Mousehole BBS

From:emmayche (Mark Hartman, Fullerton, CA)

Subject: Re: scroll bars

Inside Mac says that the “standard” width is 16 pixels; however, you can get some really strange effects at different widths.

From: asc (Alex Colwell, Redondo Beach, CA)

Subject: Using PAP Manager

Has anybody used the PAP Manager lately? I had reviewed the two “Mac Tutor” articles : Feb 1986 “Laser Print DA for Postscript” by Mike Schuster and Sep 1986 “Postscript Driver, LightSpeed C” by Bob Denny. However, when I tried to implement this into my application. I always get “Printer Not Found” using LaserWriter 5.0, System & Finder 6.0.1. I suspect the old LaserWriter driver and the new LaserWriter PAP Manager has changed where the articles are currently out-of-date. Does anybody has any ideas. Thanks.

From: dsa (Dave Stine, Saugus, CA)

Subject: Re: Using PAP Manager

If you can’t figure out what the problem is, I could upload a newer version of the PAP Driver interface. The LaserWriter has changed somewhat since Bob’s article in MacTutor, but we have a current copy here.

BTW, you should make sure that you have selected a LaserWriter by the full name, including any trailing spaces. The old ‘Namer’ application has a habit of appending trailing spaces to LaserWriter names which are odd-length when unpadded. (Silly, but that’s what they do...)

From: rustyt (Rusty Tucker, Irvine, CA)

Subject: BitMap to Region

A while ago I thought that I saw something posted about code that will convert an Icon Bitmap into a region. Does any body know where I could find this, or have any examples or ideas on how to do this? Any help at all will be appreciated!!

From: emmayche (Mark Hartman, Fullerton, CA)

Subject: Re: BitMap to Region call

There exists a BitMapRgn() call from DTS. It’s a (believe it or not) separately licensable product. We have a copy; as far as I can tell, I can only distribute it with Photon Paint.

What it does is to convert a BitMap (no PixMaps here) to a Region. FAST. What used to take 2 minutes now takes virtually no time. Great stuff. Give a call or drop some e-mail if you need any more info.

From: asc (Alex Colwell, Redondo Beach, CA)

Subject: RE: Using PAP Manager

Could you possibly upload the newer version of the PAP Driver interface? Yes, I believe, I am using the correct LaserWriter name by extracting the printer name from the ‘PAPA’ resource with the resource ID # 0xE000. Then I pass the printer name to the “PAPOpen” routine without any modifications.

I wrote a little text editor using Capp’s LSC PE edit routines. With this I want to send the Postscript code from my text editor straight to the LaserWriter. So any information you have concerning the PAP Manager would be greatly appreciated.

From: dirck (Dirck Blaskey, Highland, CA)

Subject: LSC 3.0 stdio lib

LSC 2.0 -> 3.0 library file stdfile_pos.c, function fseek():

around line 90, the code that looks like this:

           pb.ioMisc = (char *) offset; 
           if (err = who->last_error = PBSetEOF(&pb, false)) 
                 errno = err;
           return(err);

should look like this:

           pb.ioMisc = (char *) offset;
           if (err = who->last_error = PBSetEOF(&pb, false)) 
                {
                    errno = err; 
                    return(err); 
                }

this bug has the following symptoms:

if a call to fseek() causes the file to be extended, the file position will not be changed.

From: bobe (Bob Estes, Somerville, MA)

Subject: Re: LSC 3.0 math-library problem

You need to use the Math881.h header file. It’s different from plain old math.h. That sounds like it’s your problem.

From: chally (Mark Chally, West Covina, CA)

Subject: 3.0.1 and VBLs

Yes....VBLs DO get time when your application gets time--HOWEVER, they don’t get time when your application DOESN’T get time--which to me seems to defeat the purpose of a VBL. What you have to do in the case that your application needs that time is to push your VBL (and the procedure it calls) into system memory. This is tricky and I’m not too sure about doing it myself because I’m just learning assembly (and on a 8088 at school)...however, I do have information from Tech Support at Apple documenting such a practice...if’ you still need the info, I can get you a copy...leave me mail.

Oh...by the way..._DO_ get version 3.0.1 and get 2.5 megs (go for four if you can, you’ll want {not need} it.)

From: lsr (Larry Rosenstein, Cupertino, CA)

Subject: Re: 3.0.1 and VBLs

Only the VBL block needs to be in the System Heap, in order for the VBL to get time when your application doesn’t. The code that it calls can be in your application heap. You have to be careful because your application doesn’t get switched in when the VBL gets time, so you can’t rely on the CurrentA5 low memory variable. You have to stash your application’s A5 in a place relative to the VBL block, so that the VBL code can find it.

From: joehow (Joe Howell, Defuniak Springs, FL)

Subject: c compilers & development systems

Here is a chance for all experienced c macophiles to get on their soapbox. I am beginning a new development project on an application development language. I have been messing around with AZTEC C. Of all current C development systems, which is the “best” for a full scale development project.???? thanks........joe

From: emmayche (Mark Hartman, Fullerton, CA)

Subject: Re: c compilers & development systems

Having used none of them but LightSpeed(tm) C, I can safely say that it is the best I have ever used.

From: lnedry (Larry Nedry, Anaheim, CA)

Subject: Re: c compilers & development systems

I am hooked on Lightspeed C 3.0 Great debugger and fast turn around time from edit to compile to run.

From: thecloud (Ken Mcleod, La Habra, CA)

Subject: Re: c compilers & development systems

I would consider MPW C for a very large project, but my personal preference is Lightspeed C! :-)

From: adept (Roy Lovejoy, Silicon Valley)

Subject: Re: c compilers & development systems

I would have to agree on LSC 3.0x, but ONLY if there is one developer!! (try SIX some time with it!!!)

From: rdclark (Richard Clark, Tustin, CA)

Subject: Re: c compilers & development systems

LSC is the best from the standpoint of speed, debugging, and overall usability. (MPW is sooo slow!) However, if you need support for the latest and greatest operating system features, then you should use MPW since Apple has been pretty good about keeping it up to date. However, and this seems to be the consensus, I prefer LSC.

From: chenette (Philip Chenette, Los Angeles, CA)

Subject: Double Clicks

This is probably a silly question, but I can’t figure out how to detect a double-click of the mouse. I want to open up a dialog box when the user double-clicks on an object, but it seems there’s no event message for this. What am I missing? (Using LSP 1.11) Thanks!

From: thecloud (Ken Mcleod, La Habra, CA)

Subject: Re: Double Clicks

You’re right, there’s no DblClikEvt... you need to compare the time and location of a mouseUp event with those of the next mouseDown event, and if they’re sufficiently close, the user double-clicked. Read Inside Macintosh Vol. 1, pp 255-56. If you’re still having trouble, I can dig up some sample source code.

From: adept (Roy Lovejoy, Silicon Valley)

Re: Double Clicks

Basically, you handle double clicks in your mouse down handler, but keep a global around that is the ‘last-when’ of the event. You then compare it with the current event record’s ‘when’ field , and if the difference is less than the global ‘DoubleTime’ (long int stored at $2F0.. Control panel setting) It is a double click.. (you might also want to see if the “where”’s are within a specific range.. Hope this helps.

From: rdclark (Richard Clark, Tustin, CA)

Subject: Re: Double Clicks

The mouse isn’t supposed to move more than 3 pixels between the 2 clicks, otherwise, it’s considered a click-and-drag operation. Also, looking at the low memory global DoubleTime isn’t such a good idea, as Apple is discouraging any direct access to the low memory globals. Use GetDblTime() instead. Now for some code:

#define abs(x) ((x) >= 0 ? (x) : (0-x))
Boolean IsDoubleClick(where)
           Point where;
   {     static Point oldLoc;
     static long  oldTime = 0;
     long now = TickCount(); 
    Boolean idc;
         idc = FALSE;
     /* First, see if the 2 clicks are close enough in time */
     if ((now - oldTime) < GetDblTime())
     /* They are, so see if they are close enough in space */
       if ((abs(where.h - oldLoc.h) <= 3) && (abs(where.v -oldLoc.v) 
<= 3))
         idc = TRUE; 
    oldTime = now;
     oldLoc = where;
     return idc; }

From: emmayche (Mark Hartman, Fullerton, CA)

Subject: Re: Double Clicks and further checks

Richard is correct, as far as he goes; however, don’t forget to check that the clicks are still within the same screen area (for example, the object on which your user will double-click to get that dialog). If he’s real close to the edge on the first click, and just barely outside on the second click, it shouldn’t be considered a double-click.

(I generally set a flag called checkDoubleClick in my main dispatch loop which checks the time and object, and let the routine which handles the object decide if it was indeed a double-click.)

From: dsa (Dave Stine, Saugus, CA)

Subject: MPW _RTExit routine

Just nailed a real weird one. I have a driver which patches the ExitToShell trap for applications which open a communications session in said driver. This is done because drivers running under MultiFinder don’t receive a “goodBye kiss”.

Well, it would seem that applications written in MPW C don’t call the ExitToShell code in the normal manner; I think that in the _RTInit routine, they filch out the current routine in the ExitToShell trap address, stash this off in some parameter block, and it would appear that in _RTExit, they JSR (a0) to this entry point directly.

All of which means that if something patched ExitToShell *after* the _RTInit routine has run (which is caqlled before you main() entry is), you patch does not get invoked at program exit time. Can anyone confirm this for me, or am I just blowing smoke thru my hat?

From: rdclark (Richard Clark, Tustin, CA)

Subject: Re: MPW _RTExit routine

Yes, MPW C is doing something strange with ExitToShell(), and it seems that patching around the trap cannot be done. However, if you look at IM II-59, you’ll see an “Assembly-language note” which implies that ExitToShell() calls Launch(). (And a quick test with MacsBug seems to confirm this. However, I couldn’t see the “launch” execution under MultiFinder -- I had to re-run the test under “flat” finder.) I dunno, this stuff sounds pretty dangerous.

From: dsa (Dave Stine, Saugus, CA)

Subject: Re: MPW _RTExit routine

Actually, the only reason I need to have the program come thru ExitToShell() is because MultiFlounder doesn’t call drivers with the “goodBye Kiss” that the normal Finder does. So.... if some application has a network session open thru my driver, and doesn’t take care to close said session before exiting, there will be some grief Real Soon Afterwards.

So, the folks at Apple DTS told me to patch ExitToShell() to get around this “improvement” that MF made. So I did. And now, I find that yet another piece of Apple code has put a ditch in my path.

Yes, your suspicion about ExitToShell calling _Launch is correct -- in the nominal Finder case. Under MF, things get much more hairy. When an application exits, MF must tear down the “sub-heap” that was created for the app to run in, and do some other funky things. If you want to see the beginnings of how MF launches an app, see Goldman’s article in Aug. ’88 Byte (of all places), wherein he describes some of what MF does. This was an especially nice article, full of info you simply can’t get from DTS, even if you ask. (I did)

Anyway, I have already hopped around the problem for the time being. Thanks for your time.

From: adail (Alan Dail, Hampton, VA)

Subject: Re: MPW _RTExit routine

Rather than waiting for ExitToShell to be called for you, why don’t you just call ExitToShell yourself when your program is done?

From: dsa (Dave Stine, Saugus, CA)

Subject: Re: MPW _RTExit routine

‘Cuz my stuff is a driver, which is being used by the application which calls _RTExit, which doesn’t call ExitToShell().

Calling ExitToShell() for a client application from a driver often result in much sadness.

From: rdclark (Richard Clark, Tustin, CA)

Subject: Re: MPW _RTExit routine

Whoa! If you look at the original post, it’s the App which is supposed to call ExitToShell() -- the driver is trying to intercept THAT call so it can close itself.

However, another ugly problem rears its head -- many applications don’t use ExitToShell(). Instead, they simply execute an RTS when done, which returns them to a place within the Launch() trap (which then returns them to the Finder or whatever). Time to go digging for some other way of shutting things down cleanly.

 

Community Search:
MacTech Search:

Software Updates via MacUpdate

GraphicConverter 10.5 - $39.95
GraphicConverter is an all-purpose image-editing program that can import 200 different graphic-based formats, edit the image, and export it to any of 80 available file formats. The high-end editing... Read more
Dropbox 35.4.20 - Cloud backup and synch...
Dropbox is an application that creates a special Finder folder that automatically syncs online and between your computers. It allows you to both backup files and keep them up-to-date between systems... Read more
XMind 8 Update 4 - Popular mind mapping...
XMind is the most popular mind mapping tool. Millions of people use XMind to clarify thinking, manage complex information, run brainstorming and get work organized. It couldn't be easier to get... Read more
Safari Technology Preview 11.1 - The new...
Safari Technology Preview contains the most recent additions and improvements to WebKit and the latest advances in Safari web technologies. And once installed, you will receive notifications of... Read more
Chromium 61.0.3163.91 - 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 61.0.3163.91: Release notes were unavailable... Read more
RapidWeaver 7.5.1 - 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
Google Chrome 61.0.3163.91 - 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
Quicken 4.6.3 - Complete personal financ...
Quicken makes managing your money easier than ever. Whether paying bills, upgrading from Windows, enjoying more reliable downloads, or getting expert product help, Quicken's new and improved features... Read more
TechTool Pro 9.5.3 - Hard drive and syst...
TechTool Pro has long been one of the foremost utilities for keeping your Mac running smoothly and efficiently. With the release of version 9, it has become more proficient than ever. TechTool... Read more
PDFKey Pro 4.3.9 - Edit and print passwo...
PDFKey Pro can unlock PDF documents protected for printing and copying when you've forgotten your password. It can now also protect your PDF files with a password to prevent unauthorized access and/... Read more

Stormbound: Kingdom Wars guide - how to...
Stormbound: Kingdom Wars is an excellent new RTS turned card battler out now on iOS and Android. Lovers of strategy will get a lot of enjoyment out of Stormbound's chess-like mechanics, and it's cardbased units are perfect for anyone who loves the... | Read more »
The best AR apps and games on iOS right...
iOS 11 has officially launched, and with it comes Apple's ARKit, a helpful framework that makes it easier than ever for developers to create mobile AR experiences. To celebrate the occassion, we're featuring some of the best AR apps and games on... | Read more »
Phoenix Wright: Ace Attorney - Spirit of...
Phoenix Wright: Ace Attorney - Spirit of Justice 1.00.00 Device: iOS Universal Category: Games Price: $.99, Version: 1.00.00 (iTunes) Description: ************************************************※IMPORTANT※・Please read the “When... | Read more »
Kpressor (Utilities)
Kpressor 1.0.0 Device: iOS Universal Category: Utilities Price: $4.99, Version: 1.0.0 (iTunes) Description: The ultimate ZIP compression application for iPhone and iPad. - Full integration of iOS 11 with support for multitasking.-... | Read more »
Find out how you can save £35 and win a...
Nothing raises excitement like a good competition, and we’re thrilled to announce our latest contest. We’ll be sending one lucky reader and a friend to the Summoners War World Arena Championship at Le Comedia in Paris on October 7th. It’s the... | Read more »
Another Lost Phone: Laura's Story...
Another Lost Phone: Laura's Story 1.0 Device: iOS Universal Category: Games Price: $2.99, Version: 1.0 (iTunes) Description: Another Lost Phone is a game about exploring the social life of a young woman whose phone you have just... | Read more »
The Witness (Games)
The Witness 1.0 Device: iOS Universal Category: Games Price: $9.99, Version: 1.0 (iTunes) Description: You wake up, alone, on a strange island full of puzzles that will challenge and surprise you. You don't remember who you are, and... | Read more »
Egg, Inc. guide - how to build your gold...
Egg, Inc.'s been around for some time now, but don't you believe for one second that this quirky clicker game has gone out of style. The game keeps popping up on Reddit and other community forums thanks to the outlandish gameplay (plus, the... | Read more »
The best deals on the App Store this wee...
Good news, everyone! Your favorite day of the week has arrived at last -- it's discount roundup day! This fine Wednesday evening we're gathering up the hottest deals on the App Store. We've got action platformers, we've got puzzle games, we've got... | Read more »
Morphite (Games)
Morphite 1.08 Device: iOS Universal Category: Games Price: $7.99, Version: 1.08 (iTunes) Description: | Read more »

Price Scanner via MacPrices.net

OWC USB-C Travel Dock with 5 Ports Connectivi...
OWC have announced the new OWC USB-C Travel Dock, the latest addition to their line of connectivity solutions. The USB-C Travel Dock lets you connect its integrated USB-C cable to a Mac or PC laptop... Read more
Pelican Products, Inc. Unveils Cases For All...
Pelican Products, Inc. has announced the launch of its full line of cases including Voyager, Adventurer, Protector, Ambassador, Interceptor (for the Apple iPhone 8 and 8 Plus backwards compatible... Read more
$100 off new 2017 13-inch MacBook Airs
B&H Photo has 2017 13″ MacBook Airs on sale today for $100 off MSRP including free shipping. B&H charges NY & NJ sales tax only: – 13″ 1.8GHz/128GB MacBook Air (MQD32LL/A): $899, $100 off... Read more
Apple restocks Certified Refurbished 13-inch...
Apple has Certified Refurbished 2015 13″ MacBook Airs available starting at $719 and 2016 models available starting at $809. An Apple one-year warranty is included with each MacBook, and shipping is... Read more
Is iPhone X Really The Future Of The Smartpho...
Should iPhone X even be called a telephone? It does of course support telephony and texting, but its main feature set is oriented to other things. It is also debatable whether it makes any rational... Read more
OtterBox Announces Full Case Lineup for iPhon...
Apple revolutionized the smartphone industry 10 years ago with the original iPhone, and OtterBox has set the standard of protection from the very beginning by protecting every generation of iPhone.... Read more
LifeProof Introduces What’s NEXT Cases for iP...
LifeProof built its reputation on sleek, ultra-protective iPhone cases. From 360-degree coverage to the first screenless waterproof case, the protection pioneer has always pushed the limits.... Read more
Apple Refurbished 2016 15-inch MacBook Pros a...
Apple has Certified Refurbished 2016 15″ Touch Bar MacBook Pros available starting at $1949. An Apple one-year warranty is included with each model, and shipping is free: – 15″ 2.7GHz Touch Bar Space... Read more
Wednesday deal: 15-inch MacBook Pros for up t...
B&H Photo has 2017 15″ MacBook Pros on sale for $150-$200 off MSRP. Shipping is free, and B&H charges sales tax in NY & NJ only: – 15″ 2.8GHz MacBook Pro Space Gray: $2199, $200 off MSRP... Read more
2.6GHz Mac mini on sale for $599, $100 off MS...
B&H Photo has the 2.6GHz Mac mini (MGEN2LL/A) on sale for $599 including free shipping plus NY sales tax only. Their price is $100 off MSRP. Read more

Jobs Board

Development Operations and Site Reliability E...
Development Operations and Site Reliability Engineer, Apple Payment Gateway Job Number: 57572631 Santa Clara Valley, California, United States Posted: Jul. 27, 2017 Read more
Full time *Apple* Hardware Tech needed - ma...
…high level of attention to detail Ethics, integrity and trust Be a geek & Previous Apple experience a must. Previous Apple Retail or other Apple Specialist Read more
Development Operations and Site Reliability E...
Development Operations and Site Reliability Engineer, Apple Payment Gateway Job Number: 57572631 Santa Clara Valley, California, United States Posted: Jul. 27, 2017 Read more
*Apple* Store - Technical Specialist - Apple...
…customers purchase our products, you're the one who helps them get more out of their new Apple technology. Your day in the Apple Store is filled with a range of 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.