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
$112.65
Apple Inc.
+3.24
MSFT
$47.52
Microsoft Corpora
+1.78
GOOG
$511.10
Google Inc.
+6.21

MacTech Search:
Community Search:

Software Updates via MacUpdate

Mellel 3.3.7 - Powerful word processor w...
Mellel is the leading word processor for OS X and has been widely considered the industry standard since its inception. Mellel focuses on writers and scholars for technical writing and multilingual... Read more
ScreenFlow 5.0.1 - Create screen recordi...
Save 10% with the exclusive MacUpdate coupon code: AFMacUpdate10 Buy now! ScreenFlow is powerful, easy-to-use screencasting software for the Mac. With ScreenFlow you can record the contents of your... Read more
Simon 4.0 - Monitor changes and crashes...
Simon monitors websites and alerts you of crashes and changes. Select pages to monitor, choose your alert options, and customize your settings. Simon does the rest. Keep a watchful eye on your... Read more
BBEdit 11.0.2 - Powerful text and HTML e...
BBEdit is the leading professional HTML and text editor for the Mac. Specifically crafted in response to the needs of Web authors and software developers, this award-winning product provides a... Read more
ExpanDrive 4.2.1 - Access cloud storage...
ExpanDrive builds cloud storage in every application, acts just like a USB drive plugged into your Mac. With ExpanDrive, you can securely access any remote file server directly from the Finder or... Read more
Adobe After Effects CC 2014 13.2 - Creat...
After Effects CC 2014 is available as part of Adobe Creative Cloud for as little as $19.99/month (or $9.99/month if you're a previous After Effects customer). After Effects CS6 is still available... Read more
Command-C 1.1.7 - Clipboard sharing tool...
Command-C is a revolutionary app which makes easy to share your clipboard between iOS and OS X using your local WiFi network, even if the app is not currently opened. Copy anything (text, pictures,... Read more
Tidy Up 4.0.2 - 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
Typinator 6.3 - 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
GraphicConverter 9.5 - Graphics editor w...
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

Latest Forum Discussions

See All

Shift - Photo Filters Designed By You (...
Shift - Photo Filters Designed By You 1.0 Device: iOS Universal Category: Photography Price: $.99, Version: 1.0 (iTunes) Description: | Read more »
Elastic Drums (Music)
Elastic Drums 1.0 Device: iOS iPhone Category: Music Price: $3.99, Version: 1.0 (iTunes) Description: *** Introduction price 3,99$ instead of 7,99$ *** Elastic Drums is a music app with 6 channels of synthesized drum sounds, a step... | Read more »
Fireworks Simulator (Games)
Fireworks Simulator 1.0.8 Device: iOS Universal Category: Games Price: $.99, Version: 1.0.8 (iTunes) Description: *** 50% discount – For a short time only *** You can play Fireworks Simulator on these devices: - iPhone 5, 5s, 5c, 6,... | Read more »
Nicky's Gift (Games)
Nicky's Gift 1.0 Device: iOS Universal Category: Games Price: $.99, Version: 1.0 (iTunes) Description: Everybody! Merry Christmas! There's 48 levels in the game. Let's go! Nicky's Gift | Read more »
The Hit List — Simply Powerful Tasks, To...
The Hit List — Simply Powerful Tasks, To-Dos, Projects, & Reminders 2.0 Device: iOS iPhone Category: Productivity Price: $9.99, Version: 2.0 (iTunes) Description: >> LAUNCH SPECIAL: The Hit List 2 for iPhone is ONLY $9.99... | Read more »
Mahjong Journey Review
Mahjong Journey Review By Jennifer Allen on December 18th, 2014 Our Rating: :: STEADY MATCHINGiPad Only App - Designed for the iPad Aimed at the more laid back gamer, Mahjong Journey isn’t for everyone, but those looking for some... | Read more »
Emoji Type - custom keyboard with predic...
Emoji Type - custom keyboard with predictive emojis 0.4.0 Device: iOS iPhone Category: Utilities Price: $.99, Version: 0.4.0 (iTunes) Description: Emoji Type is custom keyboard for iOS 8 that auto suggests emojis as you type. ABOUT... | Read more »
Game of the Year 2014 – 148Apps Staff Pi...
The end of 2014 is almost here, which can only mean one thing. Okay it can mean a lot of things, but in this specific context it means Game of the Year lists! Which is why the 148Apps staff have all picked their favorites from the past year. And why... | Read more »
UponPixels Review
UponPixels Review By Jennifer Allen on December 18th, 2014 Our Rating: :: CREATIVE TYPOGRAPHYUniversal App - Designed for iPhone and iPad Add cool typography and objects to your photos with the easy to use UponPixels.   | Read more »
The Vikings are Coming! CastleStorm’s Ne...
The Vikings are Coming! CastleStorm’s New Update Adds a Survival Mode Posted by Jessica Fisher on December 18th, 2014 [ permalink ] | Read more »

Price Scanner via MacPrices.net

Save up to $400 on MacBooks with Apple Certif...
The Apple Store has Apple Certified Refurbished 2014 MacBook Pros and MacBook Airs available for up to $400 off the cost of new models. An Apple one-year warranty is included with each model, and... Read more
Save up to $300 on Macs, $30 on iPads with Ap...
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
iOS and Android OS Targeted by Man-in-the-Mid...
Cloud services security provider Akamai Technologies, Inc. has released, through the company’s Prolexic Security Engineering & Research Team (PLXsert), a new cybersecurity threat advisory. The... Read more
KMI MIDI K-Board Great Gift for Amateur &...
The K-Board is a MIDI Nano keyboard for music creation for iPad, Android, And computers; the easiest way to make music with iPads & Android tablets, and Mac, Windows, or Linux computers. Ultra-... Read more
Amazon offers 15-inch 2.2GHz Retina MacBook P...
 Amazon.com has the 15″ 2.2GHz Retina MacBook Pro on sale for $1699 including free shipping. Their price is $300 off MSRP. Stock is limited, so act now if you’re interested. Read more
Holiday sales continue: MacBook Pros for up t...
 B&H Photo has new MacBook Pros on sale for up to $300 off MSRP as part of their Holiday pricing. Shipping is free, and B&H charges NY sales tax only: - 15″ 2.2GHz Retina MacBook Pro: $1699... Read more
Holiday sale: Mac minis available for up to $...
 B&H Photo has new 2014 Mac minis on sale for up to $80 off MSRP. Shipping is free, and B&H charges NY sales tax only: - 1.4GHz Mac mini: $459 $40 off MSRP - 2.6GHz Mac mini: $629 $70 off... Read more
Google Search App For iOS Gets A Major Makeov...
Google has given iOS users an early Christmas present with a substantial update of it’s not-very-often-upgraded Google Search app. Google Search has been my go-to tool for Web searches since it was... Read more
ShopKeep Apple Pay And Chip Card Reader Avail...
ShopKeep, a cloud-based technology provider to more than 10,000 small business owners to manage retail shops and restaurants with iPads, has released its new Apple Pay and chip card reader. This... Read more
Holiday sale! 27-inch 5K iMac for $2299, save...
 B&H Photo has the 27″ 3.5GHz 5K iMac in stock today and on sale for $2299 including free shipping plus NY sales tax only. Their price is $200 off MSRP, and it’s the lowest price available for... Read more

Jobs Board

Project Manager, *Apple* Financial Services...
**Job Summary** Apple Financial Services (AFS) offers consumers, businesses and educational institutions ways to finance Apple purchases. We work with national and Read more
*Apple* Retail - Multiple Positions (US) - A...
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
*Apple* Retail - Multiple Positions (US) - A...
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
*Apple* Retail - Multiple Positions (US) - A...
Job Description: Sales Specialist - Retail Customer Service and Sales Transform Apple Store visitors into loyal Apple customers. When customers enter the store, Read more
*Apple* Retail - Multiple Positions (US) - A...
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
All contents are Copyright 1984-2011 by Xplain Corporation. All rights reserved. Theme designed by Icreon.