Nautilus 1992 July/Nautilus-3-8/Nautilus-3-8.bin/Tools & Utilities/Techy Stuff/Doco ƒ/CSMP ƒ/CSMP-V1-071.TXT

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C.S.M.P. Digest             Mon, 04 May 92       Volume 1 : Issue 71

Today's Topics:

    Memory management
    In MPW C, how do you cure a Jump Table Offset is out of range error?
    Passwords with ModalDialog
    Launch App & Doc
    Increasing an application's heap size
    No, I'm Not Programming Graphics & Sound, I'm Playing
    MPW shell script parameter manipulation
    SUMMARY: Hotels in San Jose / WWDC in May
    Dialog/Think C Questions


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-------------------------------------------------------

From: [e-mail]
Subject: Memory management
Date: 10 Mar 92 16:19:14 GMT
Organization: IDI-Dublin

I need to develop a generic memory allocation routine, which would emulate
the C-RTL function malloc() and return a pointer to a location in memory,
but I would like to do this using the Memory Manager routines

Furthermore, I would like to be able to allocate this chunk of memory using
NewHandle(), move this into high memory, and then lock it.  My question is,
what is the appropriate way to return a pointer to this block in high
memory?

Any help would be greatly appreciated.

Joel

BTW, I'm doing this in Think C 5.0 and their implementation of malloc()
doesn't satisfy my requirements.

+++++++++++++++++++++++++++

From: [e-mail] (Eric W. Sink)
Organization: University of Illinois at Urbana-Champaign
Date: Wed, 11 Mar 1992 14:56:03 GMT

In <[e-mail]> [e-mail] writes:

>I need to develop a generic memory allocation routine, which would emulate
>the C-RTL function malloc() and return a pointer to a location in memory,
>but I would like to do this using the Memory Manager routines

>Furthermore, I would like to be able to allocate this chunk of memory using
>NewHandle(), move this into high memory, and then lock it.  My question is,
>what is the appropriate way to return a pointer to this block in high
>memory?

Not too difficult.

Handle h;
h = NewHandle(SIZE);
MoveHHi(h);
HLock(h);
return *h;

BTW, take a quick peek at the malloc() written by Tim Endres.  You can
get it by anon ftp from harvest.cecer.army.mil in pub/mac/src.  Let me
know if it suits your needs.

- --
Eric W. Sink,  Spatial Analysis and Systems Team
USACERL, P.O. Box 9005, Champaign, IL 61826-9005
1-800-USA-CERL x449,   [e-mail]

+++++++++++++++++++++++++++

From: [e-mail] (Jim Reekes)
Date: 20 Mar 92 20:08:56 GMT
Organization: Apple Computer, Inc.

In article <[e-mail]>, [e-mail] (Eric W. Sink) writes:
>
> In <[e-mail]> [e-mail] writes:
>
> >I need to develop a generic memory allocation routine, which would emulate
> >the C-RTL function malloc() and return a pointer to a location in memory,
> >but I would like to do this using the Memory Manager routines
>
> >Furthermore, I would like to be able to allocate this chunk of memory using
> >NewHandle(), move this into high memory, and then lock it.  My question is,
> >what is the appropriate way to return a pointer to this block in high
> >memory?
>
> Not too difficult.
>
> Handle h;
> h = NewHandle(SIZE);
> MoveHHi(h);
> HLock(h);
> return *h;

If you're just going to keep the memory locked, then use NewPtr.  Handles
are suppose to be relocatable.  You move them high for temporaray reasons.
MoveHHi will lead you to fragmentation problems.  So, for a malloc routine
I would recommend NewPtr.  But honestly, I wouldn't use malloc for anything
designed to run on a Macintosh.


- -----------------------------------------------------------------------
Jim Reekes, E.O.             |     Macintosh Toolbox Engineering
                             |          Sound Manager Expert
Apple Computer, Inc.         | "All opinions expressed are mine, and do
20525 Mariani Ave. MS: 81-KS |   not necessarily represent those of my
Cupertino, CA 95014          |       employer, Apple Computer Inc."

+++++++++++++++++++++++++++

From: [e-mail] (James Brunner)
Date: 23 Mar 92 20:13:45 GMT

In article <[e-mail]>, [e-mail] writes:
|> I need to develop a generic memory allocation routine, which would emulate
|> the C-RTL function malloc() and return a pointer to a location in memory,
|> but I would like to do this using the Memory Manager routines
|>
|> Furthermore, I would like to be able to allocate this chunk of memory using
|> NewHandle(), move this into high memory, and then lock it.  My question is,
|> what is the appropriate way to return a pointer to this block in high
|> memory?

What's the point???  I mean why whould you want to allocate a relocatable
block, move it to a fixed location, and permanently lock it?

Just use NewPtr.  Allocate a fixed block (that's what you want anyway).
NewPtr automagically allocates the block in high (or is it low) memory.
Return pointers to smaller blocks in one (or several) large fixed blocks.
- --
- ---------------------------------------------------------------------------
Jim Brunner - ([e-mail])
All opinions are my own and have nothing whatsoever to do with BNR, NT,
NTI, Bell Canada, or any of the BCE corporations or affiliates.

+++++++++++++++++++++++++++

From: [e-mail] (Larry Rosenstein)
Date: 2 Apr 92 01:30:58 GMT
Organization: Taligent, Inc.

In article <[e-mail]>, [e-mail] (James Brunner)
writes:
>
> What's the point???  I mean why whould you want to allocate a relocatable
> block, move it to a fixed location, and permanently lock it?
>
> Just use NewPtr.  Allocate a fixed block (that's what you want anyway).
> NewPtr automagically allocates the block in high (or is it low) memory.

NewPtr puts the block as low as possible, which makes it much slower than if you
call NewHandle and lock the handle.  Which approach to take depends on how you
are using the memory, and what else your program does.
- --
Larry Rosenstein
Taligent, Inc.
[e-mail]

---------------------------

From: Haydn Huntley <[e-mail]>
Subject: In MPW C, how do you cure a Jump Table Offset is out of range error?
Organization: Indiana University, Bloomington
Date: Mon, 23 Mar 1992 23:40:50 -0500


I'm trying to compile the GNU version of the M4 macro processor for
MPW C as an MPW tool, and I've gotten all of the files to compile, but
I can't get them to link, because I keep getting "Error: Jump Table
Offset is out of range".  Can anyone help me?

BTW, I'm using MPW 3.0, rather than the latest version, if that makes
a difference.  Any and *all* help will be *greatly* appreciated!  :-)

- --Haydn

Here's the link command and the results:

Link -w -c 'MPS ' -t MPST -p -ss 500000 <del>
    :ObjFolder:m4.c.o :ObjFolder:input.c.o :ObjFolder:output.c.o <del>
    :ObjFolder:symtab.c.o :ObjFolder:builtin.c.o :ObjFolder:macro.c.o <del>
    :ObjFolder:debug.c.o :ObjFolder:eval.c.o :ObjFolder:path.c.o <del>
    :ObjFolder:format.c.o :ObjFolder:regex.c.o :ObjFolder:obstack.c.o <del>
    :ObjFolder:getopt.c.o :ObjFolder:getopt1.c.o <del>
    :ObjFolder:alloca.c.o  <del>
    -sn STDIO=Main <del>
    -sn INTENV=Main <del>
    -sn %A5Init=Main <del>
    "{Libraries}"Stubs.o <del>
    "{CLibraries}"CRuntime.o <del>
    "{CLibraries}"StdCLib.o <del>
    "{CLibraries}"CInterface.o <del>
    "{Libraries}"Interface.o <del>
    "{Libraries}"ToolLibs.o <del>
    -o M4

MC68000 Linker - v. 3.0 Release 1-Nov-1988          Start: 11:06:05 PM
3/23/92

 Copyright Apple Computer, Inc. 1985-1988
 All Rights Reserved.

Reading files:
  File:   1 ":ObjFolder:m4.c.o"
  File:   2 ":ObjFolder:input.c.o"
  File:   3 ":ObjFolder:output.c.o"
  File:   4 ":ObjFolder:symtab.c.o"
  File:   5 ":ObjFolder:builtin.c.o"
  File:   6 ":ObjFolder:macro.c.o"
  File:   7 ":ObjFolder:debug.c.o"
  File:   8 ":ObjFolder:eval.c.o"
  File:   9 ":ObjFolder:path.c.o"
  File:  10 ":ObjFolder:format.c.o"
  File:  11 ":ObjFolder:regex.c.o"
  File:  12 ":ObjFolder:obstack.c.o"
  File:  13 ":ObjFolder:getopt.c.o"
  File:  14 ":ObjFolder:getopt1.c.o"
  File:  15 ":ObjFolder:alloca.c.o"
  File:  16 "HD105:MPW:Libraries:Libraries:Stubs.o"
  File:  17 "HD105:MPW:Libraries:CLibraries:CRuntime.o"
  File:  18 "HD105:MPW:Libraries:CLibraries:StdCLib.o"
  File:  19 "HD105:MPW:Libraries:CLibraries:CInterface.o"
  File:  20 "HD105:MPW:Libraries:Libraries:Interface.o"
  File:  21 "HD105:MPW:Libraries:Libraries:ToolLibs.o"
Doing active analysis.
  Max. depth of search: 22
Size of global data area: 7952

Input summary:
  Read   Max              Bytes
  1388       Strings
    13       Str Blks     26702
  1771 65535 Symbols      99176
    37       ID-Sym Blks  37888
    21       Files
     9       Segments
  1731       Modules
  2408 65535 Ref. Lists   28896
   Total bytes:   192662

739 active and 68 visible entries of 1731 read.
  3 segments, 68 Jump Table entries.
### Link: Error: Jump Table Offset is out of range. (Error 50) CMain
### Link: Error: Jump Table Offset is out of range. (Error 50)__cleanup
### Link: Error: Jump Table Offset is out of range. (Error 50) sig_dfl
### Link: Error: Jump Table Offset is out of range. (Error 50)_coreIOExit
### Link: Error: Jump Table Offset is out of range. (Error 50) raise
### Link: Errors prevented normal completion.
There were 5 errors.
Execution required 9 seconds.
- --
;;  *****************************************************
;;  *  Haydn Huntley    [e-mail]  *
;;  *****************************************************

+++++++++++++++++++++++++++

From: [e-mail] (Kent Sandvik)
Date: 2 Apr 92 02:25:06 GMT
Organization: MacDTS Mongols

In article <[e-mail]>,
[e-mail] (Haydn Huntley) writes:
>
>
> I'm trying to compile the GNU version of the M4 macro processor for
> MPW C as an MPW tool, and I've gotten all of the files to compile, but
> I can't get them to link, because I keep getting "Error: Jump Table
> Offset is out of range".  Can anyone help me?
>
> BTW, I'm using MPW 3.0, rather than the latest version, if that makes
> a difference.  Any and *all* help will be *greatly* appreciated!  :-)

It seems to be one of the classical cases where 16-bit offsets
are not enough for the linking. You are using MPW 3.0, so model
far support is out of the question. My suggestion would be to either
change the linked library ordering, which maybe would make it suddenly
possible to call functions within 16-bit offsets, or then do some
creative segmentation and move functions around so they call each
other inside the same segment (i.e. no need for a jump table entry).

Hope this helps...

Kent
- --
Kent Sandvik/DTS - Dynamic Language Evangelist.
Opinions expressed are not private, and not owned by any company,
organization or group. Happy happy, joy joy!

---------------------------

From: [e-mail] (Christian Kuss)
Subject: Passwords with ModalDialog
Date: 25 Mar 92 10:10:29 GMT
Organization: Puplic-Access-Xenix-System

Hello...
I've got a problem. I'm writing a small program which asks for a password.
I use the ModalDialog call with a Filterproc to replace the characters in
the EventRecord.Message with an '*'. All works fine, but I can't read the
text with GetIText, there are only '*'. So I use another string to save all
typed characters, but when the user edits with the mouse or arrow keys, my
string is wrong.
How would you write such a filterproc?

Chrille

- --


+------------------------------+--------------------------+
! [e-mail] ! Voice: 0049 30 403 43 54 !
! [e-mail]          ! Fax  : [phone] !
+------------------------------+--------------------------+

+++++++++++++++++++++++++++

From: [e-mail] (Mark Lanett)
Organization: University of Illinois at Urbana
Date: Wed, 25 Mar 1992 14:06:36 GMT

[e-mail] (Christian Kuss) writes:

>Hello...
>I've got a problem. I'm writing a small program which asks for a password.
>I use the ModalDialog call with a Filterproc to replace the characters in
>the EventRecord.Message with an '*'. All works fine, but I can't read the
>text with GetIText, there are only '*'. So I use another string to save all
>typed characters, but when the user edits with the mouse or arrow keys, my
>string is wrong.
>How would you write such a filterproc?

There's a "snippet" on ftp.apple.com which contains 3 ways to deal with the
problem. I forget which month contains it.

>Chrille

>--


>+------------------------------+--------------------------+
>! [e-mail] ! Voice: 0049 30 403 43 54 !
>! [e-mail]          ! Fax  : [phone] !
>+------------------------------+--------------------------+
- --
Mark Lanett, Software Tools Group, NCSA           [e-mail] or  NCSA.STG
"People wander in and out of virtual rooms in virtual settings with virtual
characters and virtual money and virtual armor and virtual weapons, which is
virtually a good way to spend time, but not quite." -- Usenet Oracle

+++++++++++++++++++++++++++

From: [e-mail]
Date: 25 Mar 92 17:24:12 EST
Organization: Univ of Miami IR

In article <[e-mail]>, [e-mail] (Christian Kuss) writes:
> Hello...
> I've got a problem. I'm writing a small program which asks for a password.
> I use the ModalDialog call with a Filterproc to replace the characters in
> the EventRecord.Message with an '*'. All works fine, but I can't read the
> text with GetIText, there are only '*'. So I use another string to save all
> typed characters, but when the user edits with the mouse or arrow keys, my
> string is wrong.
> How would you write such a filterproc?
>
> Chrille

I would suggest not allowing editing. There really isn't a need to edit a
password when you type it in. Just allow them to use the delete key to erase
the previous character (that's easy to implement; just shorten the string by a
character). You don't even have to use TextEdit.
The alternative would be to do what the Sharing Setup control panel does with
passwords. Use TextEdit normally to enter the password (no *'s) and then when
they close the dialog, it will reopen with the *'s there.
I would recommend the former suggestion more highly.

Dan

/-------------------------------------------------------------------------\
|   Dan Weisman -  University of Miami - Florida   |  ||   ||   ||   ||   |
|--------------------------------------------------|  ||   ||   ||\ /||   |
|   INTERNET  -----> [e-mail]  |  ||   ||   || | ||   |
|     BITNET  -----> dweisman@umiami               |  |||||||   || | ||   |
|-------------------------------------------------------------------------|
|  "Think for yourself and feel the walls become sand beneath your feet"  |
|    -Queensryche, "Anybody Listening"                  |
\_________________________________________________________________________/

+++++++++++++++++++++++++++

From: [e-mail] (Jack Herrington)
Date: 26 Mar 92 14:27:28 GMT
Organization: University of Miami Medical School

[e-mail] (Christian Kuss) writes:
>I've got a problem. I'm writing a small program which asks for a password.
>I use the ModalDialog call with a Filterproc to replace the characters in
>the EventRecord.Message with an '*'. All works fine, but I can't read the
>text with GetIText, there are only '*'. So I use another string to save all
>typed characters, but when the user edits with the mouse or arrow keys, my
>string is wrong.
>How would you write such a filterproc?

Right off the top, how about changing the editText to a userItem, handling
the editing yourself (just use TE), then using a font with only bubbles
(or whatever) as the editing font, and restricting characters to a known
set.  Viola!

Just keep the font as a resource inside your application.

This avoids all hacking work-arounds, since 'TE' is standard, userItems are
standard, and fonts are standard.  I think you can even use resedit to create
the font.
- --
"Electric word 'life', it means forever and that's a might long time.  But I'm
 here to tell yah, there's something else... The after-life, a word of
 never-ending happiness, you can always see the sun, day or night.  So when you
 call up that shrink in Beverly hills, you know the one, Dr. everything-we-all-

+++++++++++++++++++++++++++

Organization: Queen's University at Kingston
Date: Friday, 27 Mar 1992 23:29:12 EST
From: <[e-mail]>

There was an article in MacTutor (hmm, about a year ago?) that did this.
Instead of using a substitute font, they used an off-window TE item, and
shadowed everything in the on-window item but with bullets.  Nice, simple,
works.

I just looked it up.  The article was in the July/91 MacTutor, and was
written by Bill Schilit.

.../dave  Dave Charlesworth

+++++++++++++++++++++++++++

From: [e-mail] (Christopher Huckabay Modeller Tate)
Date: 31 Mar 92 00:29:17 GMT
Organization: Penn State University

Hmmm.  I don't *like* the shadowing of bullets.

Sure, it proves that the machine is actually watching what you type, but
it also shows the chap looking over my shoulder how many characters are in
my password.

Printing spaces instead of bullets should move the insertion point to the
right (demonstrating that the machine is indeed paying attention), but make
it much harder for an "eaveslooker" to tell how many keys you've pressed.

- -------
Christopher Tate                 |  Cryptogram #9:
[e-mail]             |
[e-mail]              |  EM DECY NYLBF LBB RZUAIF, DNYA
- ---------------------------------|  RNP IZYF DNY XYBBP XUDDZA FDLP
Send me the answer; I love mail! |  DNY FLCY?

+++++++++++++++++++++++++++

From: [e-mail] (Jamie R. McCarthy)
Organization: Kalamazoo College
Date: Tue, 31 Mar 1992 13:05:05 GMT

[e-mail] (Christopher Huckabay Modeller Tate) writes:
>I don't *like* the shadowing of bullets.
>
>Sure, it proves that the machine is actually watching what you type, but
>it also shows the chap looking over my shoulder how many characters are in
>my password.
>
>Printing spaces instead of bullets should move the insertion point to the
>right (demonstrating that the machine is indeed paying attention), but make
>it much harder for an "eaveslooker" to tell how many keys you've pressed.

Just because security is a concern doesn't mean you have to have a
mysterious user interface.  How about randomly printing one to three
bullets per character typed?  (And remembering how many per char, of
course, when the user backspaces.)
- --
 Jamie McCarthy     Internet: [e-mail]     AppleLink: j.mccarthy

+++++++++++++++++++++++++++

Organization: Queen's University at Kingston
Date: Wednesday, 1 Apr 1992 23:49:10 EST
From: <[e-mail]>

Re: Echoing bullets for keystrokes as a security risk

  My feeling is that this is not a major risk.  (People writing down passwords
somewhere near or even on (yes on!) their machines is a bigger risk in my
experience.)  For example, I'm happy to tell you my password is 8 characters.
I'll even throw in a big bonus hint: it's not a normal English word.  Now
remember, you have to type each guess into a dialog... (and maybe the dialog
starts evasion tactics after 10 bad guesses...)

Cheers,

.../dave    Dave Charlesworth

+++++++++++++++++++++++++++

From: [e-mail] (Tim Dierks, ToyMeister, Cray abuser)
Date: 2 Apr 92 02:41:00 GMT
Organization: MacDTS, Apple Computer

In article <[e-mail]>, [e-mail] (Christian Kuss) writes:
> Hello...
> I've got a problem. I'm writing a small program which asks for a password.
> I use the ModalDialog call with a Filterproc to replace the characters in
> the EventRecord.Message with an '*'. All works fine, but I can't read the
> text with GetIText, there are only '*'. So I use another string to save all
> typed characters, but when the user edits with the mouse or arrow keys, my
> string is wrong.
> How would you write such a filterproc?
>
> Chrille

Check out my Password sample code snippet, available from ftp.apple.com in:
/dts/mac/sc/snippets/toolbox.iac/other/password.hqx
(apparently somebody went overboard with the whole directories thing).  It
shows three different ways to implement a password dialog, each of which
allows complete editing.

Tim Dierks
MacDTS, but I like it anyway (MB, take note)

---------------------------

From: [e-mail] (Marten Sorliden)
Subject: Launch App & Doc
Date: 25 Mar 92 11:02:01 GMT
Organization: UI Design AB, Linkoping, Sweden


I am writing an application able to launch other applications. I use the
function LaunchApplication in the Process Manager, Inside Macintosh,
Volume VI. This works fine. However, I want to launch applications and make
them open a specific document, or just open the document if the application
already is running.

The LaunchParamBlockRec used by the function LaunchApplication has got a
parameter, launchAppParametrs, which should be used as an optional pointer to
a high-level event, which is sent as the first event to the application.
My intention was to use this parameter. I created an Apple event whith the
Event ID, kAEOpenDocumetns and containing the information of the document to
be opened. But how do I convert the Apple Event to a regular high-level event
so launchAppParametrs can point to it?

I have also considerd the use of other methods to launch applications and to
make other applications open documents. Technical Note #126 discusses how to
call _Launch. But it seems to be a unsafe way since the _Launch trap is a
subject of change. The AppleEvents, High-level events and the Process Manager
on the other hand are not supported by old applications.

I'm working in THINK C 5.0

Any help would be appreciated.

Thanks,

 .      _
Marten Sorliden

- --

Internet:  [e-mail]

+++++++++++++++++++++++++++

From: [e-mail] (Joe Francis)
Date: 26 Mar 92 04:09:03 GMT
Organization: Dartmouth College, Hanover, NH

Apple has some "Snippets" code to do exactly what you describe.
Snippets may be anonymously ftp'd from on ftp.apple.com.  They can also
be found on the ETO CD, should you be an ETO subscriber, and I believe
they are also on the Developer CD, which you receive if you are a
registered developer or have a DEVELOP magazine subscription.

+++++++++++++++++++++++++++

From: [e-mail] (Ross Brown)
Date: 26 Mar 92 01:34:13 GMT
Organization: Bell-Northern Research

In article <[e-mail]> [e-mail] (Marten Sorliden)
writes:
>
>I am writing an application able to launch other applications. I use the
>function LaunchApplication in the Process Manager, Inside Macintosh,
>Volume VI. This works fine. However, I want to launch applications and make
>them open a specific document, or just open the document if the application
>already is running.
>[stuff deleted]

I think what you need (in System 7, anyway) is the 'sope' Finder AppleEvent.

Ross Brown
Bell-Northern Research Ltd.
Ottawa, Ontario, Canada
[e-mail]
Opinions expressed do not necessarily represent those of BNR.

+++++++++++++++++++++++++++

From: [e-mail] (Anders Wallgren)
Date: 26 Mar 92 01:27:20 GMT
Organization: Verity, Inc., Mountain View, CA

What you need to do is coerce your event:

    AECoerceDesc(&theEvent, typeAppParameters, &launchDesc);

You can look at the LaunchWithDoc snippet from DTS for more details.

anders

---------------------------

From: [e-mail] (Michael Fredric Kamprath)
Subject: Increasing an application's heap size
Date: 27 Mar 92 22:27:57 GMT
Organization: University of Michigan Engineering, Ann Arbor



How can I increase my applications's heap (using Think C 4.0.5).
Presently, the command:

    curAvailSize = MaxMem(&totalAvailSize);

returns curAvailSize ~6000 bytes and totalAvailSize ~4000000 bytes.
I am not really clear on how to increase curAvailSize any large.
If it is not possible for the application's heap to be increased, how
do I create an extra heap outside of the program's memory for use, and
access by, pointers?

Thanks for any help!!!

Michael Kamprath
[e-mail]
- --
/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\
\                    |                   /
/    Michael Fredric Kamprath    |                   \
/    [e-mail]    |                   \
\                    |                   /
\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/

+++++++++++++++++++++++++++

From: [e-mail] (Richard Chandler)
Date: 31 Mar 92 18:24:25 GMT
Organization: InterCon Systems Corporation

In article <[e-mail]>, [e-mail]
(Michael Fredric Kamprath) writes:
> How can I increase my applications's heap (using Think C 4.0.5).
> Presently, the command:
>
>     curAvailSize = MaxMem(&totalAvailSize);
>
> returns curAvailSize ~6000 bytes and totalAvailSize ~4000000 bytes.
> I am not really clear on how to increase curAvailSize any large.
> If it is not possible for the application's heap to be increased, how
> do I create an extra heap outside of the program's memory for use, and
> access by, pointers?

Call MaxApplZone after you've initialized all the toolbox stuff.

> Thanks for any help!!!

You're welcome.

- --
People are more violently opposed to fur than leather, because it's safer to
harass rich women than biker gangs.
"Ride a motorcycle.  Save Gas, Oil, Rubber, Steel, Aluminum, Parking Spaces,
 The Environment, and Money.  Plus, you get to wear all the leather you want!"
 Rich Chandler, DoD #296

+++++++++++++++++++++++++++

From: [e-mail] (Andy Edwards)
Date: 2 Apr 92 14:07:37 GMT
Organization: Harlequin Limited, Cambridge, England


Hi,

>>How can I increase my applications's heap (using Think C 4.0.5).
>>Presently, the command:
>>
>>    curAvailSize = MaxMem(&totalAvailSize);
>>
>>returns curAvailSize ~6000 bytes and totalAvailSize ~4000000 bytes.
>>I am not really clear on how to increase curAvailSize any large.

Try MaxApplZone() ; this should expand the heap.

>>If it is not possible for the application's heap to be increased, how
>>do I create an extra heap outside of the program's memory for use, and
>>access by, pointers?

There are some new traps in MultiFinder/ System 7 which allow you to
allocate "multifinder temporary memory", there are pointer & handle
allocate/dispose call variants. I believe that you can't hold this
memory across WaitNextEvent calls, only allocate & free it between
WaitNextEvent calls. A good used of MF temporary memory is when you
are grief stricken by a shortage of memory.

>>Thanks for any help!!!
>>
>>Michael Kamprath
>>[e-mail]

+--: Andy Edwards :----------*=================*------------------------------+
| Macintosh fire fighter,    | Harlequin Ltd.  |      uucp: [e-mail]  |
| deity, PostScript language | Barrington Hall |     janet: [e-mail] |
| level 2 porter and PAP     | Barrington      | applelink: harlequin         |
| server clone originator.   | Cambridge       |     voice: 0223 872522       |
|                            | CB2 5RG         |            [phone]   |
| My opinions only.          | England         |       fax: [phone]       |
+----------------------------*=================*------------------------------+

---------------------------

From: [e-mail] (Jeremiah Blatz)
Subject: No, I'm Not Programming Graphics & Sound, I'm Playing
Date: 31 Mar 92 03:46:29 GMT
Organization: Dartmouth College, Hanover, NH

>No matter what I try, I cannot seem to get the Sound Manager to
>play asynchronous sound without generating spurious interrupts.

 Are you using the sound manager, or the sound driver? The manager is
sys. 7 compatible, the driver is good at playing aweful staticy stuff
under sys. 7.

>    It is mistaken to think that System 6.0.5 is stable and that one
>should develop for the lowest decent denominator?

 System 7.0 is the most stable System version I've ever used. An app
I'm writing to be as "System 7 saavy" (arrrrgh!) as possible runs fine
on a 512 (no "E") and system 4.2 or something.

Just a stupid question (flame if ya like), but have you checked the
Tech. Notes? I-Mac vol VI?

Jeremiah
[e-mail]
The opinions expressed are mine only and not those of Dartmouth
College, Apple Computer, Santa and/or Satan, any of his elves, Jimmy
Swaggart, Dan Quayle, Bill Gates, or anyone you know.

+++++++++++++++++++++++++++

From: [e-mail] (P. Hawthorne)
Date: 2 Apr 92 07:46:36 GMT
Organization: Reed College, Portland OR


  [e-mail] (Jeremiah Blatz) writes:
. Are you using the sound manager, or the sound driver?

    The Sound Manager under 6.0.5, which is apparently a seething ferment of
interesting behavior, while being much more tame than previous versions...
    I guess the lowest common denominator is going to be 6.0.7, but under
the tacit assumption that the users who care would stick with the 6.0.5.
print drivers. Since the seminal 32-Bit QD 1.2 merely required 6.0.5., I
had hoped to fully support graphics and sound under that system version.
    C'est la vie.


. System 7.0 is the most stable System version I've ever used. An app
. I'm writing to be as "System 7 saavy" (arrrrgh!) as possible runs fine
. on a 512 (no "E") and system 4.2 or something.

    That's really cool! This might sound uppity, and I hope that you don't
take it that way, but how easily replicated is your project? I mean, how
hard is it to plug and play a different application with that code? Are you
encoding in a resource what particulars are required for the app?
    To be sure, 7 is the neatest thing since sliced bread. However, it is
not the perfect system for everyone, even if they have modern hardware.
    With a fairly large segment of the people that run in my circles, an
admittedly insular list of beta testers and amiably curious colleagues, 7
gets a worse rap than a passle of inits whose names begin with spaces.


. Just a stupid question (flame if ya like), but have you checked the
. Tech. Notes? I-Mac vol VI?

    Oh, how could anyone flame another for suggesting that?
    And yes, actually I have. I try to exhaust all other resources before
posting to the net...

    Theus ([e-mail])

---------------------------

From: [e-mail] (Danny M. Nessett)
Subject: MPW shell script parameter manipulation
Date: 31 Mar 92 16:56:50 GMT
Organization: LLNL

I am a novice MPW shell script programmer with the following problem. I need
to write a schell script that accepts a fully specified filename and from
that parameter sets a shell variable to the directory in which the filename
resides. This shell variable will be used in the remainder of the shell
script. I've looked at the MPW programming manual, but have not found a way
that this can be done. Does anyone know if this is possible with shell
commands? If not, is there some other way I can accomplish the same thing?
Thanks for any help.

Regards,

Dan Nessett

+++++++++++++++++++++++++++

From: [e-mail] (Mark Lanett)
Date: 31 Mar 92 18:30:14 GMT
Organization: University of Illinois at Urbana

[e-mail] (Danny M. Nessett) writes:

>I am a novice MPW shell script programmer with the following problem. I need
>to write a schell script that accepts a fully specified filename and from
>that parameter sets a shell variable to the directory in which the filename
>resides. This shell variable will be used in the remainder of the shell
>script. I've looked at the MPW programming manual, but have not found a way
>that this can be done. Does anyone know if this is possible with shell
>commands? If not, is there some other way I can accomplish the same thing?
>Thanks for any help.

#if StupidMPWTricks
Welcome to the wonderfull world of MPW! Here you discover a language
which lets you pass parameters to a script executing in its own
environment, or execute a script in its parent's environment, but not
pass parameters to a script executing in its parent's environment!
#endif

That is: (where foo is a script)
foo bar # passes "bar" to script but foo can't set my environment
execute foo # foo is running in my environment but...
execute foo bar # doesn't work. Actually it does but execute _explicitly_
    # ignores parameters, so the "bar" dissapears.

I say just do a:
set FOOPARAM bar
execute betterfoo # betterfoo looks in FOOPARAM and sees "bar"

or make foo an alias...
- --
Mark Lanett, Software Tools Group, NCSA           [e-mail] or  NCSA.STG
"People wander in and out of virtual rooms in virtual settings with virtual
characters and virtual money and virtual armor and virtual weapons, which is
virtually a good way to spend time, but not quite." -- Usenet Oracle

+++++++++++++++++++++++++++

From: [e-mail] (Tom Colley)
Date: 1 Apr 92 14:50:19 GMT
Organization: Pacer Software Inc., Westborough, MA USA

In article <[e-mail]> [e-mail] (Danny M. Nessett) writes:
>I am a novice MPW shell script programmer with the following problem. I need
>to write a schell script that accepts a fully specified filename and from
>that parameter sets a shell variable to the directory in which the filename
>resides. This shell variable will be used in the remainder of the shell
>script. I've looked at the MPW programming manual, but have not found a way
>that this can be done. Does anyone know if this is possible with shell
>commands? If not, is there some other way I can accomplish the same thing?
>Thanks for any help.
>
>Regards,
>
>Dan Nessett

If I understand you correctly, you want to take an argument to a script,
and from that argument, strip off the directory portion of that
argument.

For the following script segment, in MPW, convert:
R to option-r, L to option-l (lowercase L), X to option-x

### this assumes that the argument to be played with is the first arg.

Unset R1
( Evaluate "{1}" =~ /(([L:]*:)*)R1X/ ) > Dev:Null
Set file_path "{R1}"
echo "{file_path}"

Unset R1
( Evaluate "{1}" =~ /(([L:]*:)*)(X)R1/ ) > Dev:Null
Set leaf_name "{R1}"
echo "{leaf_name}"

### This is essentially taken from the MPW docs on the Evaluate command
### (pg 144 of vol 2 of the MPW 3.0 docs).

Hope this helps,

Tom Colley
[e-mail]   [e-mail]
##watch my return address, it may be wrong

---------------------------

From: [e-mail] (Roland Mansson)
Subject: SUMMARY: Hotels in San Jose / WWDC in May
Date: 30 Mar 92 12:08:10 GMT
Organization: Lund University Computing Center, Sweden

I asked:
>I'm going to the Worldwide Developers Conference in San Jose in May. Since
>the conference schedule is very busy, there won't be much time left to
>spend in the room. Therefore I would like suggestions of an inexpensive hotel
>located near San Jose Convention Center. Please answer by e-mail; I'll
>summarize.

The replies:
From: [e-mail] (Mike Engber)
I was told the Holiday Inn Park Center Plaza for $89 a night - a special
WWDC rat. Their number is 408-998-0400.
I got this info from someone else, but he's a good guy and has been
to the WWDC before. He says it's right across the street.

From: [e-mail] (Sak Wathanasin)
I stayed in the Holiday Inn across the road from the Convention Centre.
It was OK, and handy to nip back to dump all the freebies Apple handed out.

Thanks to those who replied.
- --
Roland Mansson, Lund University Computing Center, Box 783, S220 07 Lund, Sweden
Phone: [phone]   Fax: [phone]   Bitnet: roland_m@seldc52
Internet: [e-mail]   or   [e-mail]
UUCP: {uunet,mcvax}!sunic!ldc.lu.se!roland.mansson    AppleLink: SW0472

+++++++++++++++++++++++++++

From: [e-mail] (Roland Mansson)
Date: 1 Apr 92 09:36:59 GMT
Organization: Lund University Computing Center, Sweden

I got this directly from Apple:

From:   DEV.EVENTS                      Developer Events
Sub:    1992 WWDC hotel information

We have made arrangements for discount rates at the following hotels.  Be sure
to mention the conference when booking your room to receive these discount
rates.

   The Fairmont Hotel     $138/single
   170 S. Market Street   $158/double
   San Jose, CA
   800/527-4727 (in the U.S. and Canada ONLY)
   408/998-1900 (for all other countries)
   Note:  The Fairmont Hotel is #1 in luxury.
   AppleLink workstations will be available in a special meeting room at the
   Fairmont 24 hours a day.

   The Hyatt San Jose    $109/single
   1740 N. First Street  $134/double
   San Jose, CA
   800/233-1234 (in the U.S. and Canada ONLY)
   408/993-1234 (for all other countries)
   NOTE:  If you choose to stay here, you will have to take
   the Light Rail to get to the Convention Center.

   Red Lion Hotel          $115/single
   2050 Gateway Place      $115/double
   San Jose, CA
   800/547-8010 (in the U.S. and Canada ONLY)
   408/453-4000 (for all other countries)
   NOTE:   Walk to First Street and take the Light  Rail to the Convention
Center (a 10 minute ride).


    Hotel De Anza      $120/single
    233 W. Santa Clara Street
    San Jose, CA
    800/843-3700 (in the U.S. and Canada ONLY)
    408/286-1000 (for all other countries)
    NOTE:  4 blocks away, a five minute walk to the Convention Center.

   Holiday Inn Airport $77/single
   1355 N. the Street  $77/double
   San Jose, CA
   800/465-4329 (in the U.S. and Canada ONLY)
   408/453-5340 (for all other countries)
   NOTE:  If you choose to stay here, you will have to take
   the Light Rail to get to the Convention Center (a 10 minute ride).
   It is #1 in price.

   Holiday Inn, Park Center Plaza  $89/single
   282 Almaden Blvd.               $89/double
   San Jose, CA
   800/465-4329 (in the U.S. and Canada ONLY)
   408/998-0400 (for all other countries)
   NOTE:  Holiday Inn is located across the street from the
   San Jose Convention Center.

   Bed & Breakfast Inns
   NOTE:  We don`t have discount rates at the following
   Bed & breakfast Inns.  This is just in case someone wants to stay at
   a Bed & Breakfast Inn.

   The Hensley House       $75 - 100/double
   456 North 3rd Street
   San Jose, CA
   408/298-3537
   NOTE:  Walk a block, take the Light Rail at the Eyer station on First Street
   (a 10 minute ride).

   Briar Rose           $65/shared bath
   897 Jackson Street   $70 - 85/private bath
   San Jose, CA         $120/private cottage
   408/279-5999
   NOTE:  Either a 45 minute walk, a 5 minute drive, or take Santa Clara County
   Transit's bus 62 from First Street.

If you have any other questions, please link me at DEV.EVENTS or call
[phone].

Nancy Carr
Apple Developer Events



- --
Roland Mansson, Lund University Computing Center, Box 783, S220 07 Lund, Sweden
Phone: [phone]   Fax: [phone]   Bitnet: roland_m@seldc52
Internet: [e-mail]   or   [e-mail]
UUCP: {uunet,mcvax}!sunic!ldc.lu.se!roland.mansson    AppleLink: SW0472

---------------------------

From: [e-mail] (Brian Russ)
Subject: Dialog/Think C Questions
Date: 31 Mar 92 23:32:59 GMT
Organization: =CSE Dept., U.C. San Diego


    I'm implementing a (modeless) dialog box with several editText
fields, and I've some questions ...

    (1)  Hitting the RETURN key inside a text field blanks out the
text -- the text is still there (if I go to another field and back
to the first, I can find the text), but it's temporarily erased.
Any ideas on why this might be happening?

    (2)  The TAB key is supposed to allow auto-advancement from one
field to the next -- the problem is that I sometimes need to move
to a field that's different that the "next" one in the item list.
So what I really need is a way to arbitrarily choose any editText
item as the current one accepting input -- ideas?

    FYI, I'm very new to Think C and the Mac, but am very familiar
with C itself.  I'm doing all this on a IIsi, System 7 ...

    Thanks for your help ...

                    Brian
- --
Brian Russ
CSE Department, UC San Diego
..!sdcsvax!bruss    [e-mail]

+++++++++++++++++++++++++++

From: [e-mail] (Jon W{tte)
Date: 1 Apr 92 21:19:38 GMT
Organization: Royal Institute of Technology, Stockholm, Sweden

> [e-mail] (Brian Russ) writes:

       (1)  Hitting the RETURN key inside a text field blanks out the
   text -- the text is still there (if I go to another field and back
   to the first, I can find the text), but it's temporarily erased.
   Any ideas on why this might be happening?

Yes, you're entering a return (aka line break) which makes the
edit text auto-scroll. Since it's only one line...

You could use a dialog event filter to catch returns.

The same thing goes for selecting fields; you could catch
the tab key and do whatever you want.

- --
[e-mail]; Jon W{tte, the Diplomat - NOT!

---------------------------

End of C.S.M.P. Digest
**********************