Nautilus 1992 July/Nautilus-3-8/Nautilus-3-8.bin/Tools & Utilities/Techy Stuff/Doco ƒ/CSMP ƒ/CSMP-V1-072.TXT

Text File | 1992-06-04 | 44.9 KB | 1,183 lines

C.S.M.P. Digest             Tue, 05 May 92       Volume 1 : Issue 72

Today's Topics:

    Apple Events
    MPW Problems Subclassing an Object Pascal Object in C++
    MacApp Support Email Address
    q: why can't i see all my functions in macsbug?
    What is the Serial Port Arbitrator?!
    Speaking of WWDC, how about a netter's dinner?
    Do I get Null events in fg?
    using PixMapHandle^ with CopyBits (Pascal)?
    How to find the location of a window?
    Wanted: Free accomodation during WWDC
    Completion routines
    Version Control Software for the Mac


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

From: [e-mail] (Robert Bruce Findler)
Subject: Apple Events
Date: 12 Mar 92 19:10:33 GMT
Organization: Freshman, MCS general, Carnegie Mellon, Pittsburgh, PA

I'm having some problems. I want to send the Finder an event to open the
application finger and here's what I'm trying:

FSMakeFSSpec(0, 0, "\pBoysenberry:Finger", &file);

    finderID = 'MACS';

    err = AECreateDesc(typeApplSignature, (Ptr)&finderID, sizeof(OSType),
&address);

    err = AECreateAppleEvent(kCoreEventClass, kAEOpenDocuments, &address,
kAutoGenerateReturnID,kAnyTransactionID, &evt);

    err = AECreateList(0L, 0L, FALSE, &docs);
    err = AEPutPtr(&docs, 0, typeFSS, (Ptr)&file, sizeof(FSSpec));

    err = AEPutParamPtr(&evt, keyDirectObject, typeAEList, (Ptr)&docs,
sizeof(AEDescList));

    err = AESend(&evt, &response, kAEWaitReply + kAENeverInteract,
                        kAENormalPriority, 300, 0L, 0L);

I get a timeout error on the AESend event. Thanks in advance.

.................................................................
:    [e-mail]    : The fan awaits the shit, Madame. :
: [e-mail] : Moliere's, _The Misanthrope_     :
:............................:...............................ECFO

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

From: [e-mail] (Steve Fuller)
Organization: Iowa State University, Ames IA
Date: Fri, 27 Mar 1992 21:32:24 GMT

Is there anywhere that I can ftp/snail-mail to get a free/cheap
list of all the existing AppleEvents that are used in System
7.0????


- --
- ---------------------=---------------------------------------------------
Steve Fuller         = Critics are like eunuchs in a harem. They know
Net.nerd             = how it's done, they've seen it done every day,
[e-mail] = but they're unable to do it themselves. B. Behan

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

From: [e-mail] (Jon Pugh)
Date: 27 Mar 92 22:44:19 GMT
Organization: Apple Co.

In article <[e-mail]>, [e-mail] (Robert Bruce Findler) writes:
>
> I'm having some problems. I want to send the Finder an event to open the
> application finger and here's what I'm trying:
> [code deleted...]

You are all kinds of confused.  Get the Apple Events Registry from
ftp.apple.com and read the Finder Events chapter.  Get my FinderEvents
demo stack from /pub/pugh/hyperstuff on ftp.apple.com and check out the
sample code.

In short, the Finder sends OpenDocument events, it doesn't receive them.
It takes its own special events, although that should change in the future.

Jon
kAERegistrar

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

From: [e-mail] (Steve Fuller)
Organization: Iowa State University, Ames IA
Date: Fri, 27 Mar 1992 21:32:24 GMT

Is there anywhere that I can ftp/snail-mail to get a free/cheap
list of all the existing AppleEvents that are used in System
7.0????


- --
- ---------------------=---------------------------------------------------
Steve Fuller         = Critics are like eunuchs in a harem. They know
Net.nerd             = how it's done, they've seen it done every day,
[e-mail] = but they're unable to do it themselves. B. Behan

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

From: [e-mail] (Jon Pugh)
Date: 27 Mar 92 22:44:19 GMT
Organization: Apple Co.

In article <[e-mail]>, [e-mail] (Robert Bruce Findler) writes:
>
> I'm having some problems. I want to send the Finder an event to open the
> application finger and here's what I'm trying:
> [code deleted...]

You are all kinds of confused.  Get the Apple Events Registry from
ftp.apple.com and read the Finder Events chapter.  Get my FinderEvents
demo stack from /pub/pugh/hyperstuff on ftp.apple.com and check out the
sample code.

In short, the Finder sends OpenDocument events, it doesn't receive them.
It takes its own special events, although that should change in the future.

Jon
kAERegistrar

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

From: [e-mail] (Jon Pugh)
Date: 3 Apr 92 20:30:17 GMT
Organization: Apple Co.

In article <[e-mail]>, [e-mail] (Steve Fuller) writes:
>
> Is there anywhere that I can ftp/snail-mail to get a free/cheap
> list of all the existing AppleEvents that are used in System
> 7.0????

There is no such list.  We are currently compiling via questionaires a list
of all AE aware programs for publication through the developer program, but
it will be a printed version and not available through other channels due to
price issues (I believe). I will see about getting the data and posting it
when it becomes available.

The problem is that any program can send/receive any AE, so the system doesn't
know squat about it.  As for AE that System 7 _supports_, these are only the
four required events.

Jon
kAERegistrar

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

From: [e-mail] (Jon Pugh)
Date: 3 Apr 92 20:31:53 GMT
Organization: Apple Co.

In article <[e-mail]>, [e-mail] (Steve Fuller) writes:
>
> Is there anywhere that I can ftp/snail-mail to get a free/cheap
> list of all the existing AppleEvents that are used in System
> 7.0????

There is no such list.  We are currently compiling via questionaires a list
of all AE aware programs for publication through the developer program, but
it will be a printed version and not available through other channels due to
price issues (I believe). I will see about getting the data and posting it
when it becomes available.

The problem is that any program can send/receive any AE, so the system doesn't
know squat about it.  As for AE that System 7 _supports_, these are only the
four required events which the Finder sends and the 23 events that the Finder
accepts (which arenUt really AE, but close enough).

Jon
kAERegistrar

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

From: [e-mail] (Kim Drongesen)
Subject: MPW Problems Subclassing an Object Pascal Object in C++
Date: 27 Mar 92 16:33:22 GMT
Organization: Hewlett-Packard Co., Corvallis, OR, USA

I am writing an application in C++, but linking in some Object Pascal modules.
I have created a C++ class which is an subclass of one of the Object Pascal
classes.  The code compiles and links fine, and the correct methods are being
called.  However, if an instance variable is set in one of the subclass
methods - it is invalid in the superclass methods and vice versa.  When
I look at the object in the debugger I'm using the instance variables look
fine in one method - but then I call another and it says that all the
variables are corrupt.

I'm using MPW 3.0 Object Pascal and C++.  I have created C++ headers for
the Object Pascal modules.  I then linked the Object Pascal modules together
into a library and linked them into my C++ application.

Any pointers in the right direction would be greatly appreciated!!

Kim Drongesen
[e-mail]

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

From: [e-mail] (Kent Sandvik)
Date: 2 Apr 92 18:55:16 GMT
Organization: MacDTS Mongols

In article <[e-mail]>, [e-mail] (Kim Drongesen)
writes:
>
> I am writing an application in C++, but linking in some Object Pascal modules.
> I have created a C++ class which is an subclass of one of the Object Pascal
> classes.  The code compiles and links fine, and the correct methods are being
> called.  However, if an instance variable is set in one of the subclass
> methods - it is invalid in the superclass methods and vice versa.  When
> I look at the object in the debugger I'm using the instance variables look
> fine in one method - but then I call another and it says that all the
> variables are corrupt.

I've seen this question before, and the resolution was that the
superclass definitions were wrongly defined. Don't know
about your case, in the classical sense a field in the superclass and
sub-class is the same in the *instance* of the C++ class.

Cheers,
Kent

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

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

From: [e-mail] (Kim Drongesen)
Subject: MacApp Support Email Address
Date: 27 Mar 92 16:53:44 GMT
Organization: Hewlett-Packard Co., Corvallis, OR, USA

I have heard that there is an email address to send questions to the
MacApp support group.  If you have it - could you please send it to
me.

Thanks in advance,

Kim Drongesen
[e-mail]

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

From: [e-mail] (Kent Sandvik)
Date: 2 Apr 92 18:52:30 GMT
Organization: MacDTS Mongols

In article <[e-mail]>, [e-mail] (Kim Drongesen)
writes:
>
> I have heard that there is an email address to send questions to the
> MacApp support group.  If you have it - could you please send it to
> me.

There are two developer mailing lists on AppleLink just now which deals with
MacApp questions, MacApp2Tech$ and MacApp3Tech$. Some internet sites
also have gateways to these lists, but I don't have any information
how this is arranged. CompuServe also has a newsgroup for MacApp
issues, ditto with America Online and maybe other BBs I'm not aware
of.

MACDTS supports MacApp developers, however we are talking about
Apple partners.

Another issue, if there would be enough interest and need, maybe
comp.sys.mac.programmer should have sub-groups, style c.s.m.p.oops
but that's another story.

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

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

From: [e-mail] (Andre "Just A Plumber" Srinivasan)
Subject: q: why can't i see all my functions in macsbug?
Date: 27 Mar 92 22:43:51 GMT
Organization: Acme Plumbing Services And Exploding Cigars


if i'm in a function that lives in code resource #4 and i list the
functions via cmd-d, i can't see the functions in code resource #2.  i
can't break on the function either.

how do i trick macsbug to show me the symbols that are defined in
another code resource?

thanks.

                                -andre.
- --
Andre Srinivasan  :     "This file provides programmers with information
734 LRDC          :     proving that it really was a hardware problem..."
U. of Pittsburgh  :
[e-mail] :                - MacsBug Ballon Help

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

From: [e-mail] (Tim Dierks, ToyMeister, Cray abuser)
Date: 3 Apr 92 04:43:36 GMT
Organization: MacDTS, Apple Computer

In article <[e-mail]>, [e-mail] (Andre "Just A Plumber" Srinivasan) writes:
>
>
> if i'm in a function that lives in code resource #4 and i list the
> functions via cmd-d, i can't see the functions in code resource #2.  i
> can't break on the function either.
>
> how do i trick macsbug to show me the symbols that are defined in
> another code resource?

It's deja vu all over again....

You can't; MacsBug will only look at memory, not at disk.  You may want to
try marking your CODE segments 'Preload' with ResEdit (or link can do it,
if you're using MPW).  Then they'll all start out as loaded, so you can
break easily.  Or, set the byte at loadtrap ($12C).  The segment loader
will now break into MacsBug when a segment gets loaded.  Every time one
is, you can check to see if your function is around yet.

Tim Dierks
MacDTS, but my socks stay dry

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

From: [e-mail] (Tim Endres)
Subject: What is the Serial Port Arbitrator?!
Date: 30 Mar 92 15:33:37 GMT
Organization: ICE Engineering, Inc.


Can anyone tell me what the Serial Port Arbitrator is?!

Will it let my various CTB apps share the serial port for logins?
I.e. can it ask the connecting party what app they wish to connect
to and then satisfy the CMListen for that app? Or does it just tell
me when other apps have the port?

tim.


tim endres - [e-mail]  -or-  uupsi!tbomb!time
ICE Engineering, Inc. - Phone [phone] - FAX [phone]
8840 Main Street, Whitmore Lake, MI  48189
USENET - a slow moving self parody... ph

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

From: [e-mail] (Stephan - Somogyi)
Date: 30 Mar 92 19:12:28 GMT
Organization: The Portal System (TM)

[e-mail] (Tim Endres) writes:

>Can anyone tell me what the Serial Port Arbitrator is?!

I'm assuming you mean the thing that lives in the Extensions folder and
has a type/creator of LTMC/gsrp. It's part of AppleTalk Remote Access and
watches for when it can take over the serial port again to enable
auto-answer.

_____________________________________________________________________
Stephan Somogyi        Getting To The Bottom Of It All        MacUser

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

From: [e-mail] (Glenn Austin)
Date: Wed, 1 Apr 92 23:07:25 PST
Organization: The Pit Lane


In article <[e-mail]> (comp.sys.mac.programmer,comp.sys.mac.comm), [e-mail] (Tim Endres) writes:
>
> Can anyone tell me what the Serial Port Arbitrator is?!
>
> Will it let my various CTB apps share the serial port for logins?
> I.e. can it ask the connecting party what app they wish to connect
> to and then satisfy the CMListen for that app? Or does it just tell
> me when other apps have the port?

It's part of ARA that allows ARA to use the port when a comm application
isn't.

The only problem is -- you have to patch the Serial and Modem tools to get
them to work with ARA...

The good news -- I've already done this for the Serial tool.  I can let
you know what and where to patch, if necessary.

===============================================================================
| Glenn L. Austin                | "Turn too soon, run out of room.           |
| Macintosh Wizard and           |    Turn too late, much better fate."       |
| Auto Racing Driver             |   -- Jim Russell Racing School Instructors |
| Usenet:  [e-mail] or [e-mail]    |
===============================================================================

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

From: [e-mail] (Werner Uhrig)
Date: 2 Apr 92 10:28:46 GMT
Organization: CS Dept, University of Texas at Austin

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

>> Can anyone tell me what the Serial Port Arbitrator is?!
>It's part of ARA that allows ARA to use the port when a comm application
>isn't. The only problem is -- you have to patch the Serial and Modem tools
>to get them to work with ARA...
>The good news -- I've already done this for the Serial tool.  I can let
>you know what and where to patch, if necessary.

    Glenn, you have my FULL attention.  I have been cursing
    about "something" which keeps interfering with my using
    the Global ADB-modem (emulating the printer port) while
    having LocalTalk connections on the physical printer port,
    and ARA installed (but not even active); what you mention
    here sounds just like the "elusive bug" I have been on the
    look-out for.  Tell me more, please !! (and please don't
    forget to x-post to csm.comm - I am not paying attention
    to csm.programmer these days)
- --
  --([e-mail])--*OR*--(...!uunet!cs.utexas.edu!werner)--
Definition of Foreign Aid:
    "The transfer of money from poor people in rich countries
    to rich people in poor countries"  ---Unknown, probably dead...

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

From: [e-mail] (Stephan - Somogyi)
Date: 2 Apr 92 17:27:30 GMT
Organization: The Portal System (TM)

[e-mail] (Glenn Austin) writes:

>The only problem is -- you have to patch the Serial and Modem tools to
>get them to work with ARA...

I don't know about the Serial Tool (having never used it) but as far as I
know, the Apple Modem Tool 1.1 and later (1.1.1 being the current rev)
understands about the Arbiter. Also, with the pre-1.1 tool you can hold
down option and override; this works well.

_____________________________________________________________________
Stephan Somogyi        Getting To The Bottom Of It All        MacUser

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

From: [e-mail] (Stephan - Somogyi)
Date: 2 Apr 92 17:35:01 GMT
Organization: The Portal System (TM)

[e-mail] (Werner Uhrig) writes:

>Glenn, you have my FULL attention. I have been cursing about "something"
>which keeps interfering with my using the Global ADB-modem (emulating the
>printer port) while having LocalTalk connections on the physical printer
>port, and ARA installed (but not even active); what you mention here
>sounds just like the "elusive bug" I have been on the look-out for.

Werner, could you please clarify "interfering with my using the GV
ADB-modem"? What doesn't work? What are you trying to do?

I have ARA installed, a Global Village FullFax set up to be in CTB mode,
and a T3000 connected to my modem port, all working together (or
independently, as the case may be) without problems.

_____________________________________________________________________
Stephan Somogyi        Getting To The Bottom Of It All        MacUser

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

From: [e-mail] (Glenn Austin)
Date: Fri, 3 Apr 92 13:24:26 PST
Organization: The Pit Lane


In article <[e-mail]> (comp.sys.mac.programmer,comp.sys.mac.comm), [e-mail] (Stephan - Somogyi) writes:
> [e-mail] (Glenn Austin) writes:
>
> >The only problem is -- you have to patch the Serial and Modem tools to
> >get them to work with ARA...
>
> I don't know about the Serial Tool (having never used it) but as far as I
> know, the Apple Modem Tool 1.1 and later (1.1.1 being the current rev)
> understands about the Arbiter. Also, with the pre-1.1 tool you can hold
> down option and override; this works well.

The problem is when you have the cmQuiet bit set -- you don't GET the dialog
for overriding the use of the port.

And no, not using the cmQuiet bit is not an option in some cases...

===============================================================================
| Glenn L. Austin                | "Turn too soon, run out of room.           |
| Macintosh Wizard and           |    Turn too late, much better fate."       |
| Auto Racing Driver             |   -- Jim Russell Racing School Instructors |
| Usenet:  [e-mail] or [e-mail]    |
===============================================================================

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

From: [e-mail] (Owen M. Hartnett)
Subject: Speaking of WWDC, how about a netter's dinner?
Date: 1 Apr 92 01:28:54 GMT
Organization: Brown University Department of Computer Science

Netter's dinner has always been a highlight of any of the MacWorlds and
WWDCs.  I'm hoping that the individuals who have organized these in
the past (or perhaps some would be organizers) would see fit to organize
them again.

If you're looking for suggested places, Gordon Biersch (sp?) was great last
time.  It may be too late to book some places, especially since Thursday
seems to be the only night with nothing planned in the evening hours.

- -Owen

Owen Hartnett                [e-mail]
"FAITH, n. Belief without evidence in what is told by one who speaks
        without knowledge, of things without parallel."
            -Ambrose Bierce - The Devil's Dictionary

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

From: [e-mail] (Jon W{tte)
Date: 1 Apr 92 21:34:41 GMT
Organization: Royal Institute of Technology, Stockholm, Sweden

.brown.edu> [e-mail] (Owen M. Hartnett) writes:

   If you're looking for suggested places, Gordon Biersch (sp?) was great last
   time.  It may be too late to book some places, especially since Thursday
   seems to be the only night with nothing planned in the evening hours.

They served the best beer I had while in the US last time...
I second the motion !

I just hope we don't collide with the A/UX group again :-(

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

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

From: [e-mail] (Michael Peirce)
Date: Thu, 2 Apr 92 07:40:54 PST
Organization: Peirce Software

In article <[e-mail]> (comp.sys.mac.programmer), [e-mail] (Owen M. Hartnett) writes:
> Netter's dinner has always been a highlight of any of the MacWorlds and
> WWDCs.  I'm hoping that the individuals who have organized these in
> the past (or perhaps some would be organizers) would see fit to organize
> them again.
>
> If you're looking for suggested places, Gordon Biersch (sp?) was great last
> time.  It may be too late to book some places, especially since Thursday
> seems to be the only night with nothing planned in the evening hours.

Well, I'll coordinate it again this year if no one else is game (if
someone *is* interested, speak up, and I'll step aside!).

Let's try for Thursday night as suggested.

I'll talk to Gorden Biersch in the next few days to see if they can
accomidate us again.

Please send me email if you expect to attend so I can give Gorden
Biersh an approximate head count.

- --  Michael Peirce         --   [e-mail]
- --  Peirce Software        --   Suite 301, 719 Hibiscus Place
- --  Macintosh Programming  --   San Jose, California USA 95117
- --           & Consulting  --   voice: [phone] fax: [phone]
- --                         --   AppleLink: peirce & America Online: AFC Peirc>e

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

From: [e-mail] (Michael James)
Subject: Do I get Null events in fg?
Date: 1 Apr 92 05:15:42 GMT
Organization: Rensselaer Polytechnic Institute, Troy NY

I am trying to learn how to program the Macintosh and typed in the
Event Tutor program from Mark and Cartwright's book (I can't remember
the title at the moment).  Everything seems to work as expected except
for the following: When I tell WaitNextEvent that I want to receive
"everyEvent" it will give me all the events I am expecting except for
Null Events.  I get one when I first start the program and then don't
get any more.  However, if I click on the root window to switch the
Finder (or whatever we're supposed to call it in System 7-speak) to
the foreground, I get about 6 or 7 null events and then nothing else.
When I switch the EventTutor program back to the foreground I get
another null event.

I was expecting to get a continuous stream of null events when I ran
the program.  I did not.  I did find, however, that if I give
WaitNextEvent an event mask of 0 (zero, that is) I get loads of null
events and it takes so much time to process them that I cannot regain
control of the machine and have to reboot.  Inside Machintosh
describes the event mask of zero as 'unused.'

My questions:

1) What's the deal?  Why am I not getting a continuous stream of null
events when I give WaitNextEvent an event mask of 'everyEvent?'  What
is the even mask of zero?

2) If the foreground process doesn't get these null events, what is
the accepted way of doing something like updating a clock or some
other display in the foreground which must be updated regardless of
whether any user-generated events are received?

3) If you know the answer to questions 1 and 2, where did you find the
answer?  I have RTFMed Inside Macintosh and Dave Mark's Primer books
and anything else I could get my hands on (I didn't find anything in
the technical notes, but I seem to have trouble finding anything in
them anyway, so I might have missed it) and had no luck.

I am using THINK C 5.0.2 under System 7.0.1 with Tune-up.

Also, I am a fairly experienced programmer with a decent amount of
experience with writing event driven software.  Event driven
programming isn't giving me problems; null events and the Macintosh OS
are.  (No flames; I own a Mac :-)

Thanks in advance,

Mike

- --------------------------------------------------------------------
Michael James           Rensselaer Polytechnic Institute
[e-mail]
- --------------------------------------------------------------------

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

From: [e-mail] (Doug McNought)
Date: 1 Apr 92 06:32:02 GMT
Organization: California Institute of Technology

In article <5+vts6#@rpi.edu> [e-mail] (Michael James) writes:
>I am trying to learn how to program the Macintosh and typed in the
>Event Tutor program from Mark and Cartwright's book (I can't remember
>the title at the moment).  Everything seems to work as expected except
>for the following: When I tell WaitNextEvent that I want to receive
>"everyEvent" it will give me all the events I am expecting except for
>Null Events.  I get one when I first start the program and then don't
>get any more.  However, if I click on the root window to switch the
>Finder (or whatever we're supposed to call it in System 7-speak) to
>the foreground, I get about 6 or 7 null events and then nothing else.
>When I switch the EventTutor program back to the foreground I get
>another null event.

  What sleep value are you passing to WNE? If you pass nonzero, MF will give
time to background processes instead of wasting time giving you null events.
If you pass zero you should get a stream of null events and waste a lot of
CPU.

>I was expecting to get a continuous stream of null events when I ran
>the program.  I did not.  I did find, however, that if I give
>WaitNextEvent an event mask of 0 (zero, that is) I get loads of null
>events and it takes so much time to process them that I cannot regain
>control of the machine and have to reboot.  Inside Machintosh
>describes the event mask of zero as 'unused.'
>
>My questions:
>
>1) What's the deal?  Why am I not getting a continuous stream of null
>events when I give WaitNextEvent an event mask of 'everyEvent?'  What
>is the even mask of zero?

  As I said above, check your sleep parameter. The zero mask means "Don't
give me any meaningful events--leave them in the queue." Eventually the queue
fills up. This could easily cause you to hang.

>2) If the foreground process doesn't get these null events, what is
>the accepted way of doing something like updating a clock or some
>other display in the foreground which must be updated regardless of
>whether any user-generated events are received?

  Say you're updating a clock. You pass 60 to WNE for the sleep parameter,
which means you get woken up at least once a second (unless some CPU hog
is running in the background :-(  ). Every time through the event loop just
check TickCount() for whether the display needs updating. Note that you don't
have to use this mechanism if all you're doing is changing the cursor--you
can use WNE's mouseRgn for that.

>3) If you know the answer to questions 1 and 2, where did you find the
>answer?  I have RTFMed Inside Macintosh and Dave Mark's Primer books
>and anything else I could get my hands on (I didn't find anything in
>the technical notes, but I seem to have trouble finding anything in
>them anyway, so I might have missed it) and had no luck.

  The Event Manager chapter of IM6 is reasonably clear on this--see
page 5-29.  I kind of picked it up by osmosis from MacTutor, skimming
though Chernicoff, etc. I don't know the Mark/Cartwright book but it
seems as if they could be clearer on this--it's not really that hard.
regards,
doug
- --
<><><><><><><><><><><><><><><>Go Orioles<><><><><><><><><><><><><><><><>
<> Doug McNaught                          [e-mail] <>
<>  Help!!! I'm addicted to *Spaceward Ho!* Is there a support group? <>
<><><><><><><><><><><><><><><>Go Orioles<><><><><><><><><><><><><><><><>

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

From: [e-mail] (Jon W{tte)
Date: 2 Apr 92 08:24:26 GMT
Organization: Royal Institute of Technology, Stockholm, Sweden

.caltech.edu> [e-mail] (Doug McNought) writes:

   is running in the background :-(  ). Every time through the event loop just
   check TickCount() for whether the display needs updating. Note that you

Nah, that's a waste. Use the "when" field of the event record instead !

   >3) If you know the answer to questions 1 and 2, where did you find the
   >answer?  I have RTFMed Inside Macintosh and Dave Mark's Primer books
   >and anything else I could get my hands on (I didn't find anything in
   >the technical notes, but I seem to have trouble finding anything in
   >them anyway, so I might have missed it) and had no luck.

     The Event Manager chapter of IM6 is reasonably clear on this--see
   page 5-29.  I kind of picked it up by osmosis from MacTutor, skimming

Also, the Tech Notes come in hypercard stack form, and you can search
through it using nice indexes. That's the only way to actually get any
use out of the tech notes. Try searching for "MultiFinder" and/or
"WaitNextEvent" for instance.

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

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

From: [e-mail] (Michael Bach)
Subject: using PixMapHandle^ with CopyBits (Pascal)?
Date: 1 Apr 92 08:37:20 GMT
Organization: Rechenzentrum der Universitaet Freiburg, Deutschland


Dear colleagues:
May I pose the following problem: In IM VI you are warned not
to dereference GWorld-PixMap handles, but rather do as follows:
var
   pixBase: PixMapHandle;
begin
....
pixBase := GetGWorldPixMap(OffPortPtr);
CopyBits(pixBase^, GrafPtr(currPort)^.portBits,
     OffRect, OnRect, ditherCopy, nil);
However, ThinkPascal (4.01) complains about incompatible typing.
The common-and-garden version works (see also TN#120):
CopyBits(GrafPtr(OffPortPtr)^.portBits,
          GrafPtr(currPort)^.portBits,
          OffRect, OnRect, ditherCopy, nil);
Of course, a pixBase^ is something different than a BitMap, but
somewhere in IM IV it says that the type for CopyBits has been
relaxed. So is it just a problem of Think Pascal?
Hoping to have made myself clear (I did try to avoid the tell-tale
German long-and-winding sentences),
Michael.
- --
Dr. Michael Bach, Opthalmological Dept.,
University of Freiburg, D-7800 Freiburg, Germany

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

From: [e-mail] (Jamie R. McCarthy)
Organization: Kalamazoo College
Date: Wed, 1 Apr 1992 14:23:08 GMT

[e-mail] (Michael Bach) writes:
>
>var
>   pixBase: PixMapHandle;
>
>pixBase := GetGWorldPixMap(OffPortPtr);
>CopyBits(pixBase^, GrafPtr(currPort)^.portBits,
>     OffRect, OnRect, ditherCopy, nil);
>
>However, ThinkPascal (4.01) complains about incompatible typing.
>
>Of course, a pixBase^ is something different than a BitMap, but
>somewhere in IM IV it says that the type for CopyBits has been
>relaxed. So is it just a problem of Think Pascal?

It's a problem in any typed language.  The CopyBits expects a @BitMap,
so you'll have to cast it to that before you pass it.  The toolbox can
still tell it's really a PixMap because the hi bit of rowBytes will be
set.  (This kind of kludge is what happens when engineers have to turn a
1-bit graphics toolbox into a 48-bit graphics toolbox...)
- --
 Jamie McCarthy     Internet: [e-mail]     AppleLink: j.mccarthy

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

From: [e-mail] (Mike Smithwick)
Subject: How to find the location of a window?
Organization: SF-Bay Public-Access Unix
Date: Wed, 1 Apr 1992 08:26:35 GMT

[]

How does one go about finding the location of a window?? I am getting
the portRect, but the top and left fields are always zero.

mike

- --
"There is no problem too big that can't be solved with high explosives"-Rush

Mike Smithwick - ames!zorch!mike


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

From: [e-mail] (JohnC)
Organization: The Royal Society for Putting Things on Top of Other Things
Date: Wed, 1 Apr 1992 17:07:24 GMT

In article <[e-mail]> [e-mail] (Mike Smithwick) writes:
>How does one go about finding the location of a window?? I am getting
>the portRect, but the top and left fields are always zero.

The portRect boundary is in the window's local coordinate system.  To find
its global location, simply make sure that the window is the current port
(by using _SetPort), then pass the portRect.topLeft to the _LocalToGlobal
procedure.  See IM-I,193.

- --
John Cavallino                  |  EMail: [e-mail]
University of Chicago Hospitals |         [e-mail]
Office of Facilities Management | USMail: 5841 S. Maryland Ave, MC 0953
B0 f++ c+ g+ k s++ e+ h- pv     |         Chicago, IL  60637

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

From: [e-mail] (Jon W{tte)
Date: 2 Apr 92 08:41:43 GMT
Organization: Royal Institute of Technology, Stockholm, Sweden

.SF-Bay.ORG> [e-mail] (Mike Smithwick) writes:

   How does one go about finding the location of a window?? I am getting
   the portRect, but the top and left fields are always zero.


// Return, in global coordinates, the location of a windows
// top-left corner (which is not always the windows origin)
Point
WindowLocation ( WindowPtr window )
{
    GrafPtr oldPort ;
    Point p ;

    GetPort ( & oldPort ) ;    // Save old port to restore later
    SetPort ( window ) ;    // We want to use the port in question

    p = * ( Point * ) & ( window -> portRect ) ;
                // The portRects topleft is the windows
                // topleft in local coordinates. This may
                // change from 0,0 when you SetOrigin.

    LocalToGlobal ( & p ) ;    // This is the magic call - pretty simple

    SetPort ( oldPort ) ;    // Remember to clean up
    return p ;        // And we're done
}

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

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

From: [e-mail] (Oliver Breidenbach)
Subject: Wanted: Free accomodation during WWDC
Organization: Technische Universitaet Muenchen, Germany
Date: Wed, 1 Apr 1992 15:30:36 GMT


Hi netters,

I and my brother do have the opportunity to go to San Jose in May and attend
the WWDC. The flight and the entrance fees would be paid by the company we
work for, but not the accommodation. (Bad luck).
Since we are both students and want to spend some time after the WWDC to visit
the Yosemite national park we are looking for some very cheap (better yet: free)
place to sleep from April, 9th to April, 16th.
If you are interessted to host two young mac enthusiasts during that period,
please e-mail me.
Thanks for your interest.

Oliver.

([e-mail])

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

From: [e-mail] (Oliver Breidenbach)
Date: 2 Apr 92 06:48:10 GMT
Organization: Technische Universitaet Muenchen, Germany

Oh, damn. I hate to do this: ;-)

I wrote:

>Since we are both students and want to spend some time after the WWDC to visit
>the Yosemite national park we are looking for some very cheap (better yet: free)
>place to sleep from April, 9th to April, 16th.

That is May, of course, not April.

Please forgive me. :-)

Cheers,
Oliver.

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

From: [e-mail] (Ronald P. Smith)
Subject: Completion routines
Organization: University of Illinois at Urbana
Date: Wed, 1 Apr 1992 20:34:41 GMT

I'm having problems with a completion routine I'm trying to implement.
The function is a search function, it reads in a portion of a file, and
according to what it gets, reads another portion.  Each read is
asynchronous, and the completion routine passed is the function itself.
Basically, I have a completion function passing itself as a copletion
function to a file mgr routine.  well, my function dies when it's all done
with a strange os err (different each time).  I suspect my setting up
a completion function from within a completion function is a no-no,
am I doing something wrong?

any and all help would be appreciated.

- --RS  Ron Smith ([e-mail])

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

From: [e-mail] (Rick Holzgrafe)
Date: 2 Apr 92 22:07:32 GMT
Organization: Taligent

In article <[e-mail]>, [e-mail]
(Ronald P. Smith) writes:
>
> I'm having problems with a completion routine I'm trying to implement.
> The function is a search function, it reads in a portion of a file, and
> according to what it gets, reads another portion.  Each read is
> asynchronous, and the completion routine passed is the function itself.
> Basically, I have a completion function passing itself as a copletion
> function to a file mgr routine.  well, my function dies when it's all done
> with a strange os err (different each time).  I suspect my setting up
> a completion function from within a completion function is a no-no,
> am I doing something wrong?
>
> any and all help would be appreciated.
>
> --RS  Ron Smith ([e-mail])


This sort of thing can work in networking, if you do it right. I'm less certain
about async file system calls, but I suspect that if (as you say) it is working
up until the stack unwinds, it can be fixed.

But first I have an alternate suggestion. Instead of using completion routines,
why not simply poll the ioResult flag in your event loop? When the latest async
call is complete, call a handler routine from the event loop, and let it process
the results and set up the next async call if necessary. This avoids the entire
snake's nest of completion routines, and costs almost nothing. You may fear a
slowdown because the event loop may be busy doing other things; but if it is,
it's because the user told it to, and interaction with the user should have
first priority anyway. (If the user has walked away from the Mac, you could get
a slowdown while waiting for WaitNextEvent to give you some idle time. Combat
that by passing a small sleep interval to WaitNextEvent when you have async
calls pending, and a longer one when you don't.)

If you feel you must chain, here are some things to watch out for.

1. Your completion routine is fundamentally recursive. Just because you make a
call asynchronously doesn't mean it will happen later; it could complete
immediately, before the call (or the caller) has a chance to return. This means
that the completion routine's code *must* be re-entrant. One way to assure this
is to make the chaining call the last thing your completion routine does before
returning. (It's okay to re-use the parameter block, if you are otherwise done
with it.)

2. Again, your completion routine is recursive; this means it could potentially
chew up a lot of stack. Try to minimize the size and number of local variables
you create. This is especially important because a completion routine can never
be sure whose stack it's using. If your routine gets called while some other app
with a tiny stack is getting some background time, you can easily bomb that app
as well as your own.

3. Remember that completion routines may NOT make any calls that could move or
purge memory. This has nothing to do with chaining; it's always true. (And
forgive me if you know this already; it's such an easy trap to fall into.)

Disclaimer: This stuff works great with networking calls. I've never tried it
with file system calls.

Hope this helps.



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

From: [e-mail] (Jim Tubman)
Subject: Version Control Software for the Mac
Organization: Alberta Research Council
Date: 1 Apr 92 15:40:53

Can anyone direct me to a version control software package for the
Mac, analogous to PVCS for MS-DOS or RCS for Unix?  Ideally it should
work with a HyperCard stack I am developing (that is, the software
item that needs to be under version control is a HyperCard stack).

- --
- -------------------------------------------------------------------------------
James B. Tubman                 Alberta Research Council
Research Officer                     Advanced Computing & Engineering Dept.
[e-mail]         3rd Floor
[e-mail]             6815 - 8 Street NE
Phone: [phone]             Calgary, Alberta
Fax:   [phone]             Canada T2E 7H7
- -------------------------------------------------------------------------------
     "The squid is no longer responding to the mind control!  Aaiiiieeeee!"
- -------------------------------------------------------------------------------

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

From: [e-mail] (Mike Shields)
Date: 2 Apr 92 20:25:50 GMT
Organization: University of Utah Computer Center

In article <[e-mail]> [e-mail]
(Jim Tubman) writes:
> Can anyone direct me to a version control software package for the
> Mac, analogous to PVCS for MS-DOS or RCS for Unix?  Ideally it should
> work with a HyperCard stack I am developing (that is, the software
> item that needs to be under version control is a HyperCard stack).
>

For anyone looking for version control for the Macintosh, check out Version
Master from Astar Technologies.  This lets you track versions of any Macintosh
file (Source code, stacks, MS Word docs, etc.). Yuo can recieve a demo copy
from Astar. The demo lets you use any feature of the software, but oly lets you
keep three versions of the document.  Try it.

Astar can be contacted at:
AppleLink - [e-mail]
Phone - [phone]
Fax - [phone]

Disclaimer: This is my father's company.
- --
# Mike Shields                   | REPLY TO ->
# Research Assistant             | [e-mail]
# U of Utah. College of Nursing  | [e-mail]
#include <stddisclaimer.h>       | ^^ This one is NeXTmail.

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

From: [e-mail] (Michael Peirce)
Date: 3 Apr 92 04:53:13 GMT
Organization: Peirce Software


In article <[e-mail]> (comp.sys.mac.programmer), [e-mail] (Jim Tubman) writes:
> Can anyone direct me to a version control software package for the
> Mac, analogous to PVCS for MS-DOS or RCS for Unix?  Ideally it should
> work with a HyperCard stack I am developing (that is, the software
> item that needs to be under version control is a HyperCard stack).

The two solutions I know about are Projector and VersionMaster.

Projector is part of MPW and is excellent at controlling text oriented
files.  If can handle other file types but not particularly efficiently.

VersionMaster, from Astar Technologies, Inc., works with all file
types and doesn't depend on MPW.  They just released version 1.1 with
many improvements to the usser interface.  The announement was in
MacWeek a couple of weeks back.

Projector/MPW can be had from APDA.


VersionMaster can be had from some mail order houses and directly
from Astar.

Astar Technologies Inc.
P.O. Box 1100
Littleton MA 01460
[phone]

- --  Michael Peirce         --   [e-mail]
- --  Peirce Software        --   Suite 301, 719 Hibiscus Place
- --  Macintosh Programming  --   San Jose, California USA 95117
- --           & Consulting  --   voice: [phone] fax: [phone]
- --                         --   AppleLink: peirce & America Online: AFC Peirce

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

From: [e-mail] (Allan F. Randall)
Date: 3 Apr 92 20:53:41 GMT
Organization: Defence and Civil Institute of Environmental Medicine

In article <[e-mail]> [e-mail] (Jim Tubman) writes:
>Can anyone direct me to a version control software package for the
>James B. Tubman                 Alberta Research Council

Check out SaveAll, a version control CDEV. It seems pretty good. It is
available from shareware sources as a fully functional DEMO that expires after
30 days. The registration fee is typical of shareware.

- ------------------------------------
Allan Randall
NTT Systems, Inc.
Toronto, ON
[phone] (work)
[phone] (home)
Internet: [e-mail]
CompuServe: 72057,1176

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

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