TweetFollow Us on Twitter

Oct 89 Mousehole
Volume Number:5
Issue Number:10
Column Tag:Mousehole Report

Mousehole Report

By Rusty Hodge & Larry Nedry, Mousehole BBS

From: Willcox

Re: Deleting a Folder

I am having trouble deleting a folder using the Low Level File Manager routines. I have created a folder and put some temporary files in it. At the end of my program, I would like to delete this directory. I am trying to use PBHDelete. I first delete all the files in this folder. Then, I try to close the working directory with PBCloseWD since I opened it with PBOpenWD. Then I call PBHDelete. I get error -47, fBsyErr, File is busy. I have tried various parameters in PBHDelete (WDid, vRefnum, name of folder), but I still get -47. Also, when I do this with MultiFinder turned off, I can not delete the folder from the Finder, it too says the folder is busy. Help.

From: Adept

Re: Deleting a Folder

When doing any PBOpen calls, you have to be sure to set your ioWDProcID to ‘ERIK’, the magic ‘longint’, otherwise it will be undeletable by the finder (until reboot), You might be calling PBClose with something != PBOpen and != to ‘ERIK’..

From: Mikec

Re: Setting current folder

Bryce, I am excited to see your message #878 that creates new folders. I have been wanting to do this for an application for a long time. But I am just starting to program and have little idea how to fit your listed code into a procedure that will create the folder. Can you help me by listing a more complete procedure or uploading a text file? I use LSP and would be delighted to hear from you.

From: Tony

Re: Setting current folder

Mike, Below is the list of a function call CreateFolder. I believe this will do what you want. It takes as parameter the name of the folder and the volume reference of where to put the folder. In return, it will pass back and errorcode and the FolderID. The folderId is in fact the Directory Id and can be used a vRefNum (volume reference no) in any of your File I/O calls.

Function CreateFolder(FolderName:str255; vRefNum : integer;
varFolderId:longint):OSErr;
Var
 Blk:HParamBlockRec;
 errorcode :OSErr;
begin
   with blk do
    begin
     ioCompletion := nil;
     ioNamePtr := @FolderName;
     ioVrefNum := vRefNum;
     ioDirId := 0;
   end;
  errorcode := PBDirCreate(@blk,false);
 FolderID := blk.ioDirId;
 CreateFolder := errorcode;
end;

Hope this helps.

From: Shaper

Re: List Manager problem...

Does anyone have any source code for the List Manager routines? I got the source to the LDEF’s in the Think Pascal library on CompuServe and tried to use that source but it’s kind of strange because he used custom LDEFs with variable column numbers. I want to use the LDEF that comes in the system file to make a list of people’s names, and I can get the list to appear but the only way to scroll it is to click on someone’s name and then drag downward to scroll down - the arrow buttons don’t work for some reason. Also, it doesn’t always hilite the cell that you click on, so you have to keep clicking on different parts of the list cntl until one does hilite before you can scroll up or down...

From: Jumpcut

Re: List Manager problem...

If you don’t specify a LDEF, the List Manager will use the standard system LDEF. You can then set the list’s selFlags to make sure things get selected properly. CHeck around page 270 of IMIV. I was having similar problems after I changed the font and style of the window the list was in. First thing to check - make sure your window is a noGrowDocProc, or else the grow box (whether you draw one or not) will keep mouseDown events from scrolling the list down. I’m sure you’re using LClick, so I won’t bother to mention that. My only other suggestion is to avoid the obviously stupid (unlike me) and remember to change the font & face before creating the list.

From: Inbox

Re: Endless lists

I’m doing a numerical analysis of a chaos/pattern generation problem, but I’ve been temporarily delayed by the need of array-like structures with their original size unknown. Beginner C skills decrease my programming self-confidence, so I would like to hear you comments on the topic of lists... I did the following:

  typedef struct mystruct{
            int myint;
            mystructptr nextstruct;
            } *mystructptr;

But, I cannot do that because *mystructptr isn’t yet recognized by the compiler. Should I make nextstruct a ptr and then coerce it when creating a new structure? If not, what are your suggestions?

Thanks for listening, _inBox_

P.S. Is there any C trick for making self-referencing things like this one

(I mean a language directive of some kind...)

From: Siegel

Re: Endless lists

For a self-referential structure (say, a linked list): .

typedef struct element {
  int field1;
  long field2;
  struct element *next;
} element, *elementPtr;

Since this is the Mac, why not use a handle-based structure to support an array of dynamic size? As in:

typedef int *PInt, **HInt;
.
{
 Hint myIntHandle = NewHandle(0);
.
 /* sorry for the caps slipup above */
 SetHandleSize(myIntHandle, (long)nIntegers * sizeof(int));
 (*myIntHandle)[nIntegers - 1] = someValue; /* assign the last element 
*/
}

From: Inbox

Re: Endless lists

Thanks a lot. And just when I thought that I was out of the woods....

AAARGGGHHHH !!!!! The Mac’s random number generator turns out to be unusable by any self-respecting chaosologist for any purpose. I used statistical analysis to determine its bias, and then compared it to tables of acceptable fluctuations. And guess what, it SUCKS!!! (pardon the language)... So I set out to write a random number generator. Done. And, here comes the big one: how can I raise small integers to humongous powers??!! For example, 5^10000 will definitely cause an overflow for C’s “pow” function. The max number that can be stored in a 64 bit variable is 1.84467E19. But, 5^10000 or something similar just blew me out of the water.

Any suggestions are very very welcome. (and needed....).........

From: Apage

Re: Endless lists

If you’re using a Mac II the 881 uses the extended precision format to 80 bits. If you have a mac with an 882 (which can be dropped in with no trouble and few tools), the precision goes out to 96 bits.

From: Inbox

Re: Endless lists

Ah, but are you talking about the mantissa or the whole number? For example, my HP 28S (calculator) has a 12-digit mantissa and allows powers up to 500. With the 96 bit format the max is 28. Maybe the calculator scheme holds for the Mac?! Then only the mantissa is limited by the bits of a format. Take Matematica, for example... It can do number crunching with infinite precision and allows mega-powers. I guess it uses its own package but....

From: Tron

Re: Receiving events from a DA

Does anyone know how to receive events from a DA that is written in LSC? In IM #1, page 446, it says that the control routine receives in the csParam field a pointer to an event record. Hence:

     case 2:   /*  control  */
        switch (p->csCode) {
           case accEvent
               DoEvent((EventRecord *)p->csParam);
               break;
        }

I figured that this would work, yet I cannot handle any events in my DoEvent routine. Anyone ever dealt with DA’s from LSC before?

From: Macguru

Re: Receiving events from a DA

Have you set up your DA’s Event mask to tell it what events you are expecting to receive? This is done in the header.

 
AAPL
$524.94
Apple Inc.
+5.93
MSFT
$40.01
Microsoft Corpora
-0.39
GOOG
$536.10
Google Inc.
-20.44

MacTech Search:
Community Search:

Software Updates via MacUpdate

Mac DVDRipper Pro 4.1.7 - Copy, backup,...
Mac DVDRipper Pro is the DVD backup solution that lets you protect your DVDs from scratches, save your batteries by reading your movies from your hard disk, manage your collection with just a few... Read more
PDFpenPro 6.2 - Advanced PDF toolkit for...
PDFpenPro allows users to edit PDF's easily. Add text, images and signatures. Fill out PDF forms. Merge or split PDF documents. Reorder and delete pages. Even correct text and edit graphics! Create... Read more
PDFpen 6.2 - Edit and annotate PDFs with...
PDFpen allows users to easily edit PDF's. Add text, images and signatures. Fill out PDF forms. Merge or split PDF documents. Reorder and delete pages. Even correct text and edit graphics! Features... Read more
Monolingual 1.5.9 - Remove unwanted OS X...
Monolingual is a program for removing unnecesary language resources from OS X, in order to reclaim several hundred megabytes of disk space. It requires a 64-bit capable Intel-based Mac and at least... Read more
Maya 2015 - Professional 3D modeling and...
Maya is an award-winning software and powerful, integrated 3D modeling, animation, visual effects, and rendering solution. Because Maya is based on an open architecture, all your work can be scripted... Read more
Starcraft II: Wings of Liberty 1.1.1.180...
Download the patch by launching the Starcraft II game and downloading it through the Battle.net connection within the app. Starcraft II: Wings of Liberty is a strategy game played in real-time. You... Read more
Sibelius 7.5.0 - Music notation solution...
Sibelius is the world's best-selling music notation software for Mac. It is as intuitive to use as a pen, yet so powerful that it does most things in less than the blink of an eye. The demo includes... Read more
Typinator 5.9 - Speedy and reliable text...
Typinator turbo-charges your typing productivity. Type a little. Typinator does the rest. We've all faced projects that require repetitive typing tasks. With Typinator, you can store commonly used... Read more
MYStuff Pro 2.0.16 - Create inventories...
MYStuff Pro is the most flexible way to create detail-rich inventories for your home or small business. Add items to MYStuff by dragging and dropping existing information, uploading new images, or... Read more
TurboTax 2013.r17.002 - Manage your 2013...
TurboTax guides you through your tax return step by step, does all the calculations, and checks your return for errors and overlooked deductions. It lets you file your return electronically to get... Read more

Latest Forum Discussions

See All

Sparkle Unleashed Review
Sparkle Unleashed Review By Jennifer Allen on April 18th, 2014 Our Rating: :: CLASSY MARBLE FLINGINGUniversal App - Designed for iPhone and iPad It’s a concept we’ve seen before, but Sparkle Unleashed is a solidly enjoyable orb... | Read more »
Tilt to Live 2: Redonkulus Receives its...
Tilt to Live 2: Redonkulus Receives its First Update – Gets New Brimstone Pinball DLC Posted by Rob Rich on April 18th, 2014 [ permalink ] | Read more »
Where's My Water? Featuring XYY (G...
Where's My Water? Featuring XYY 1.0 Device: iOS Universal Category: Games Price: $.99, Version: 1.0 (iTunes) Description: iPod Touch 4th Gen, iPhone 3GS or iPad 1 are not compatible with this app. | Read more »
The Amazing Spider-Man 2 (Games)
The Amazing Spider-Man 2 1.0.0 Device: iOS Universal Category: Games Price: $4.99, Version: 1.0.0 (iTunes) Description: *IMPORTANT* The Amazing Spider-Man 2 requires an iPad 2 (or newer), iPhone 4s (or newer), or iPod touch 5th... | Read more »
Living Planet - Tiny Planet Videos and P...
Living Planet - Tiny Planet Videos and Photos 1.0 Device: iOS Universal Category: Photography Price: $.99, Version: 1.0 (iTunes) Description: 50% OFF LAUNCH SPECIAL! BUY NOW BEFORE THE PRICE GOES UP... | Read more »
Livescribe 3 Smartpen Review
Made by: Livescribe Price: $149.99 for Livescribe 3 Hardware/iOS Integration Rating: 4.5 out of 5 stars Usability Rating: 4 out of 5 stars Reuse Value Rating: 4.75 out of 5 stars Build Quality Rating: 4.5 out of 5 stars Overall Rating: 4.44 out of... | Read more »
Unpossible Review
Unpossible Review By Carter Dotson on April 17th, 2014 Our Rating: :: RALPH WIGGUM APPROVESUniversal App - Designed for iPhone and iPad Unpossible is much better than its English!   | Read more »
Hitman GO Review
Hitman GO Review By Carter Dotson on April 17th, 2014 Our Rating: :: GO HITMAN, GO!Universal App - Designed for iPhone and iPad Hitman GO is not the obvious way to do a mobile version of the Hitman series, but it’s an incredibly... | Read more »
Monster High Ghouls and Jewels is a Frea...
Monster High Ghouls and Jewels is a Freaky Fashion-Forward Match-3 Puzzler Posted by Rob Rich on April 17th, 2014 [ permalink ] | Read more »
Dinosaur Train A to Z Review
Dinosaur Train A to Z Review By Amy Solomon on April 17th, 2014 Our Rating: :: DINO DETAILSUniversal App - Designed for iPhone and iPad Dinosaur Train A to Z is an educational app about dinosaurs that includes In-App Purchases... | Read more »

Price Scanner via MacPrices.net

iMacs on sale for up to $160 off MSRP this we...
Best Buy has iMacs on sale for up to $160 off MSRP for a limited time. Choose free home shipping or free instant local store pickup (if available). Prices are valid for online orders only, in-store... Read more
iPad Airs on sale this weekend for up to $100...
Best Buy has WiFi iPad Airs on sale for $50 off MSRP and WiFi + Cellular iPad Airs on sale for $100 off MSRP on their online store for a limited time, with prices now starting at $449. Choose free... Read more
Apple restocks refurbished Mac minis starting...
The Apple Store has restocked Apple Certified Refurbished Mac minis for up to $150 off the cost of new models. Apple’s one-year warranty is included with each mini, and shipping is free: - 2.5GHz Mac... Read more
Hyundai Brings Apple CarPlay To The 2015 Sona...
Hyundai Motor America has announced it will bring Apple CarPlay functionality to the 2015 Sonata. CarPlay is pitched as a smarter, safer and easier way to use iPhone in the car and gives iPhone users... Read more
Updated iPads Coming Sooner Than We Had Thoug...
MacRumors, cites KGI securities analyst Ming Chi Kuo, well-respected as an Apple product prognisticator, saying that Apple will introduce an upgraded iPad Air and iPad mini in 2014/Q3, meaning the... Read more
Toshiba Unveils New High And Low End Laptop M...
Toshiba has announced new laptop models covering both the high-end and low-end of the notebook computer spectrum. Toshiba 4K Ultra HD Laptop Toshiba’s new Satellite P55t features one of the world’s... Read more
Save up to $270 with Apple refurbished 13-inc...
The Apple Store has Apple Certified Refurbished October 2013 13″ Retina MacBook Pros available starting at $1099, with models up to $270 off MSRP. Apple’s one-year warranty is standard, and shipping... Read more
Apple now offering refurbished iPad mini with...
The Apple Store has Certified Refurbished 2nd generation iPad minis with Retina Displays now available starting at $339. Apple’s one-year warranty is included with each model, and shipping is free.... Read more
Microsoft Blinks – Drops Microsoft Office 365...
Microsoft has dropped the annual subscription fee for Microsoft Office 365 Personal – which is needed in order to create and edit documents in Microsoft Office for iPad. However, Apple’s iOS and OS X... Read more
New AVG Vault Apps for iOS and Android Help K...
AVG Technologies N.V. an online security company for 177 million active users, has announced the launch of its latest mobile application, AVG Vault. The free app introduces an innovative user... 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
*Apple* Retail - Manager - Holyoke - Apple I...
Job Summary Keeping an Apple Store thriving requires a diverse set of leadership skills, and as a Manager, you’re a master of them all. In the store’s fast-paced, Read more
*Apple* Retail - Manager - Apple (United Sta...
Job SummaryKeeping an Apple Store thriving requires a diverse set of leadership skills, and as a Manager, you're a master of them all. In the store's fast-paced, dynamic 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* Retail - Market Leader - Cincinnati...
…challenges of developing individuals, building teams, and affecting growth across Apple Stores. You demonstrate successful leadership ability - focusing on excellence Read more
All contents are Copyright 1984-2011 by Xplain Corporation. All rights reserved. Theme designed by Icreon.