MacTech 1 to 12/MacTech-vol-1-12.toast/Reference/the cmsp digests ('94-'97)/csmp digest Vol 3 No 015

Internet Message Format | 1997-05-06 | 66KB

From: [e-mail] (Francois Pottier)
Subject: csmp-digest-v3-015
Date: Sat, 16 Apr 94 15:19:50 MET DST

C.S.M.P. Digest             Sat, 16 Apr 94       Volume 3 : Issue 15

Today's Topics:

        Accepting aliased folders-disks via Drag Manager?
        Anybody know the FULL definition of a Region?
        But is it a DA?
        How do you direct CD-ROM drive using system commands?
        How do you get a copyright?
        Print Manager question.
        Sending AppleEvents from AppleScript?
        Trouble with 'WIND's and window staggering
        When-Where WWDC '94 ?
        Where is DropShell?
        double click?



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

>From [e-mail] (Aaron Giles)
Subject: Accepting aliased folders-disks via Drag Manager?
Date: Wed, 30 Mar 1994 17:13:42 -0500
Organization: Cornell University Medical College

I've been fiddling with the Drag Manager, and have come across a situation
where I would like to allow the user to drag a folder and/or a disk icon
from the Finder into a window.  Currently, I just accept the HFS flavor,
and check for file types of 'fold' or 'disk', which seems to work just
great for everything except aliases.

Now I want to be able to accept aliases to folders and disks as well, but
now checking the file type is not so easy a thing to do, since the Finder
basically has a different file type for each type of folder and disk.  So,
my question is this: Is there any way to reliably determine whether a drag
candidate is a folder, without resolving any aliases (user interaction
during a drag would be a Bad Thing)?

Thanks!
Aaron
--
Aaron Giles
Power Macintosh & Newton developer
Cornell University Medical College
[e-mail]

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

>From [e-mail] (Leonard Rosenthol)
Date: Thu, 31 Mar 1994 20:57:39 GMT
Organization: Aladdin Systems, Inc.

In article <[e-mail]>,
[e-mail] (Aaron Giles) wrote:

> Now I want to be able to accept aliases to folders and disks as well, but
> now checking the file type is not so easy a thing to do, since the Finder
> basically has a different file type for each type of folder and disk.  So,
> my question is this: Is there any way to reliably determine whether a drag
> candidate is a folder, without resolving any aliases (user interaction
> during a drag would be a Bad Thing)?
>
   You can do a "quiet resolve" using MatchAlias as describe in a Tech
Note by Greg Robbins.  Should be some good sample code as well...

Leonard
- ------------------------------------------------------------------------
Leonard Rosenthol                      Internet:       [e-mail]
Director of Advanced Technology        AppleLink:      MACgician
Aladdin Systems, Inc.                  GEnie:          MACgician

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

>From [e-mail] (Benjamin Herrenschmidt)
Date: Sat, 2 Apr 94 11:05:04 +0100
Organization: (none)


> Now I want to be able to accept aliases to folders and disks as well, but
> now checking the file type is not so easy a thing to do, since the Finder
> basically has a different file type for each type of folder and disk.  So,
> my question is this: Is there any way to reliably determine whether a drag
> candidate is a folder, without resolving any aliases (user interaction
> during a drag would be a Bad Thing)?
>

I had the same problem in a Standard File filter proc. I think there
is no documented way to know if an alias points to a container (folder,
disk, etc...) or to a file.
I reverse-engineered ResEdit and the Standard File itself, they both
test for all the possible OSTypes of a container alias. If i remeber
corerctly, they even missed some types: just make aliases of your
Fonts and PrintMonitor Documents folders and look... One of them (i
don't remember which one) will be displayed as an application, the
other will not be displayed as a container in the Get File/Folder
info in ResEdit.

You can try the silent resolve technique using MatchAlias but it will
not work if your alias points to an unmounted volume or a file/folder
on such a volume.

BenH.

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

>From Thomas Reed <[e-mail]>
Subject: Anybody know the FULL definition of a Region?
Date: 23 Mar 1994 20:24:42 GMT
Organization: Washington University

I'm interested in playing around with some non-rectangular regions, and
what I want to do, I'll need to know exactly how the Region data type
stores this information.  (Actually, what I'll want to do is get a series
of points describing the border of the region from certain sections of
the region.)

Thanks in advance for the help!

-Thomas
=====================================================
Thomas Reed                    Washington University
[e-mail]          Medical School
(also:  [e-mail])
- ---------------------------------------------------
Clothes make the man.  Naked people have little or no
influence on society.  -- Mark Twain
=====================================================

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

>From [e-mail]. (Allan Foster)
Date: 24 Mar 1994 07:17:25 GMT
Organization: Guru Inc

In article <[e-mail]>
Thomas Reed <[e-mail]> writes:

> I'm interested in playing around with some non-rectangular regions, and
> what I want to do, I'll need to know exactly how the Region data type
> stores this information.  (Actually, what I'll want to do is get a series
> of points describing the border of the region from certain sections of
> the region.)
>
> Thanks in advance for the help!
>

The format of the region data structure in Quickdraw is actually rather
simple.  But I would recommend not using the data directly, but rather
using the quickdraw calls provided.  They can do most of the
manipulation one requires.

The actual format is as follows, as near as my memory can remember:

First a rect describing the enclosing rect of the entire region.  for
each scan line, a list of horizontal points where a crossing occurs,
either entering or leaving the region.  (it turns out that Odd indices
will be entering the region, and even will be leaving)  The alst point
is -1 (I think), followed by the next scan line.  The last scan line is
shown as two consecutive -1s

This can all be checked rather simply by looking at the handle of a
region in TMon, or other debugger of your choice..

Allan

- --------------------------------------------------------
I am responsible for what I say and do. -- Allan Foster --

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

>From [e-mail] (Juri Munkki)
Date: 29 Mar 1994 21:26:14 GMT
Organization: Helsinki University of Technology

In article <2mreq5$[e-mail]> [e-mail]. (Allan Foster) writes:
>First a rect describing the enclosing rect of the entire region.  for
>each scan line, a list of horizontal points where a crossing occurs,
>either entering or leaving the region.  (it turns out that Odd indices
>will be entering the region, and even will be leaving)  The alst point
>is -1 (I think), followed by the next scan line.  The last scan line is
>shown as two consecutive -1s

Almost correct, but not quite. Only the changes are described in the list,
so you keep a list of x coordinates and if a number isn't there already,
you add it to the list and if it's there, you remove it.

I seem to remember writing an article about the region data format for the
UMPG (Usenet Macintosh Programmer's Guide), but I may be wrong...may be worth
checking in any case.

--
  Juri Munkki            There ain't so such thing as a shareware lunch.
 [e-mail]                Windsurfing: Faster than the wind.

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

>From Jens Alfke <[e-mail]>
Date: Fri, 1 Apr 1994 00:08:45 GMT
Organization: Apple Computer

Thomas Reed, [e-mail] writes:
> I'm interested in playing around with some non-rectangular regions, and
> what I want to do, I'll need to know exactly how the Region data type
> stores this information.  (Actually, what I'll want to do is get a series
> of points describing the border of the region from certain sections of
> the region.)

Head to your nearest technical library and look up
US Patent #4,622,545
Atkinson, William D.
"Method and Apparatus For Image Compression And Manipulation"

The good news: This contains all the gory details.
The bad news: It's a patent. If you make use of the gory details you will be
violating the patent and be liable for a lawsuit from Apple.

There are quite possibly ways of doing what you want to do without groping
the Region structure. F'rinstance, I've written code that converts a region
into an equivalent Polygon without doing so. (Hint: Draw the Region into an
offscreen BitMap and do some standard image-processing stuff to the BitMap.
This isn't so heinous, as you can band it pretty easily.)

[I don't usually do so, but in this message I think I should point out that I
am not speaking officially for Apple Computer. I am no legal expert and I'm
not totally sure whether making use of the region data would be violating the
patent. I am _fairly_ sure, however.]

--Jens Alfke
  jens_alfke@powertalk              Rebel girl, rebel girl,
            .apple.com              Rebel girl you are the queen of my world

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

>From [e-mail] (Timothy Hunt)
Date: 1 Apr 94 22:17:20 GMT
Organization: Harvard University, Cambridge, Massachusetts

Jens Alfke <[e-mail]> writes:

>Thomas Reed, [e-mail] writes:
>> I'm interested in playing around with some non-rectangular regions, and
>> what I want to do, I'll need to know exactly how the Region data type
>> stores this information.  (Actually, what I'll want to do is get a series
>> of points describing the border of the region from certain sections of
>> the region.)

>Head to your nearest technical library and look up
>US Patent #4,622,545
>Atkinson, William D.
>"Method and Apparatus For Image Compression And Manipulation"

>The good news: This contains all the gory details.
>The bad news: It's a patent. If you make use of the gory details you will be
>violating the patent and be liable for a lawsuit from Apple.

Can you, or anyone else give us a basic idea of how regions are implemented?
I don't want the gory details, just a general outline.  I'm impressed by
the speed and flexibility of QuickDraw's regions, and I wonder how it is
done.

Thanks
Tim
([e-mail])

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

>From [e-mail] (Jeremy Roussak;Guest of Distributed Systems Lab)
Subject: But is it a DA?
Date: Tue, 22 Mar 1994 21:55:32 GMT
Organization: Computer Science Dept, QMW, University of London

How can I tell, from an INIT (actually from a patch to
_FindWindow) whether the currently frontmost application is in
fact a desk accessory?

Probing with MacsBug, I see that CurApRefNum seems always to be
2 (the System file) and CurMap tends to point to the DA's home
file (all this is under system 7, of course). I can't see
CurMap being particularly useful or reliable. How about
CurApRefNum? Or is there a better way?

Jeremy

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

>From [e-mail] (Jaeger)
Date: Wed, 23 Mar 94 16:59:39 CST
Organization: Kunikpok Kennels and Komputers (Pet Project)

[e-mail] (Jeremy Roussak;Guest of Distributed Systems Lab)) writes:

> How can I tell, from an INIT (actually from a patch to
> _FindWindow) whether the currently frontmost application is in
> fact a desk accessory?
>
> Probing with MacsBug, I see that CurApRefNum seems always to be
> 2 (the System file) and CurMap tends to point to the DA's home
> file (all this is under system 7, of course). I can't see
> CurMap being particularly useful or reliable. How about
> CurApRefNum? Or is there a better way?
>
> Jeremy

Call GetFrontProcess().  The processMode field has a bit set if it's a
DA.
Brian Stern  :-{)}
[e-mail]


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

>From [e-mail] (Jeremy Roussak;Guest of Distributed Systems Lab)
Date: Thu, 24 Mar 1994 22:33:56 GMT
Organization: Computer Science Dept, QMW, University of London

In <[e-mail]> [e-mail] (Jaeger) writes:

>I wrote:
>> How can I tell, from an INIT (actually from a patch to
>> _FindWindow) whether the currently frontmost application is in
>> fact a desk accessory?
>>
>> Probing with MacsBug, I see that CurApRefNum seems always to be
>> 2 (the System file) and CurMap tends to point to the DA's home
>> file (all this is under system 7, of course). I can't see
>> CurMap being particularly useful or reliable. How about
>> CurApRefNum? Or is there a better way?

>Call GetFrontProcess().  The processMode field has a bit set if it's a
>DA.

Unfortunately, I need to support system 6, and neither
GetFrontProcess(), which returns the PSN, nor GetProcessInfo(),
which returns the information of which you speak, is supported
before system 7.

However, someone did point out that the windowKind field of a
DA's window is negative.

Jeremy


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

>From Stephan Bublava <[e-mail]>
Date: 25 Mar 1994 10:52:09 GMT
Organization: Vienna University of Technology

In article <[e-mail]> Jeremy Roussak;Guest of
Distributed Systems Lab, [e-mail] writes:

>However, someone did point out that the windowKind field of
>a DA's window is negative.

On the other hand there are lots of DAs that do not open
a window but just have a menu ...

Stephan

--
Stephan Bublava
[e-mail]

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

>From Jens Alfke <[e-mail]>
Date: Fri, 1 Apr 1994 02:10:28 GMT
Organization: Apple Computer

[e-mail] writes:
> How can I tell, from an INIT (actually from a patch to
> _FindWindow) whether the currently frontmost application is in
> fact a desk accessory?

You could call GetProcessInfo to get the process' file type and compare it
with 'DFIL' or 'dfil'.

--Jens Alfke
  jens_alfke@powertalk              Rebel girl, rebel girl,
            .apple.com              Rebel girl you are the queen of my world

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

>From Dave Falkenburg <[e-mail]>
Date: Fri, 1 Apr 1994 20:51:43 GMT
Organization: Apple Computer, Inc.

In article <[e-mail]> Jens Alfke,
[e-mail] writes:
>[e-mail] writes:
>> How can I tell, from an INIT (actually from a patch to
>> _FindWindow) whether the currently frontmost application is in
>> fact a desk accessory?
>
>You could call GetProcessInfo to get the process' file type and compare
it
>with 'DFIL' or 'dfil'.
>
>--Jens Alfke
>  jens_alfke@powertalk              Rebel girl, rebel girl,
>            .apple.com              Rebel girl you are the queen of my
world

Although Jens' solution can work, don!t compare the file type. You should
do
something like:

if (aProcessInfoPB.processMode & modeDeskAccessory)
    {
    //    it's a desk accessory...
    }

-Dave Falkenburg
-Apple Computer, Inc.

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

>From [e-mail] (Marshall Ruskin)
Subject: How do you direct CD-ROM drive using system commands?
Date: 31 Mar 1994 19:12:12 GMT
Organization: Specmark Information Engineering, Inc.

Dear readers;

Please accept this posting as a request for "pointers" regarding the system
software or "extensions" that Macintosh uses to interface with
hardware-specific drivers for specific CD-ROM drives. The Windows analogy
to what I'm speaking of, is called "MSCDEX".

We want to be able to direct the drive to go to specific tracks, etc. To
accomplish this, we want to write an application that directs the CD-ROM
device driver, through the hardware-independent system "tool" on the Mac.

However, we can't find any reference to the desired function in the Apple
doc's we reviewed.

I would very much appreciate it, if you could please just steer us to the
appropriate documentation or source.

Thank you very much for taking the time to read my posting.

Best Regards;

Marshall Ruskin
Specmark Information Engineering, Inc.

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

>From [e-mail] (Chris DeSalvo)
Date: Fri, 1 Apr 1994 09:48:04 GMT
Organization: NETCOM On-line Communication Services (408 241-9760 guest)

Marshall Ruskin ([e-mail]) wrote:
: We want to be able to direct the drive to go to specific tracks, etc. To
: accomplish this, we want to write an application that directs the CD-ROM
: device driver, through the hardware-independent system "tool" on the Mac.

: However, we can't find any reference to the desired function in the Apple
: doc's we reviewed.

Get on ftp.apple.com.  Go to /dts/mac/tn/devices.dv and get the file

dv-22-cd-rom-driver-calls.hqx

All the calls are made through the device manager.  It's pretty easy.

L8R
Chris
--
+-----------------------------------------------------------------+
| [e-mail]           |   Macintosh:  Changing the world, |
| Chris De Salvo              |        one person at a time!      |
| Professional Mac Geek       |    -----------------------------  |
| MacPlay, Irvine, CA         |      (I wish they'd hurry up!)    |
+-----------------------------------------------------------------+

Any opinions expressed, or implied, are my own!  They should not be
considered representative of the opinions or policies of my employer,
MacPlay, a division of Interplay Productions, Inc.

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

>From Thomas Reed <[e-mail]>
Subject: How do you get a copyright?
Date: 23 Mar 1994 20:25:41 GMT
Organization: Washington University

How does one get a game copyrighted?  I've heard that you just write in
the About box or somewhere that it's copyrighted, and it is, but I'm
coming to doubt that a little bit.  Do you have to register with someone?

Thanks in advance for the help!

-Thomas
=====================================================
Thomas Reed                    Washington University
[e-mail]          Medical School
(also:  [e-mail])
- ---------------------------------------------------
Clothes make the man.  Naked people have little or no
influence on society.  -- Mark Twain
=====================================================

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

>From [e-mail] (Jon Wätte)
Date: 24 Mar 1994 09:15:25 GMT
Organization: The Royal Institute of Technology

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

>How does one get a game copyrighted?  I've heard that you just write in
>the About box or somewhere that it's copyrighted, and it is, but I'm
>coming to doubt that a little bit.  Do you have to register with someone?

As soon as you create something, it is covered by your copyright.
It's inherent in the fact that you created it. You don't have to
say anything anywhere in the program or documentation; it's still
copyrighted.

If the case comes to court, however, you'd be well-adviced to have
good documentation of when you created the program, and that YOU
created it. There are methods of "oficially" registering works
for such archival purposes, but they're purely volountary.
--
 -- Jon W{tte, [e-mail], Mac Hacker Deluxe --
    Not speaking for IBM.

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

>From Jim Conner <[e-mail]>
Date: 24 Mar 1994 15:59:22 GMT
Organization: Cornell University

In article <[e-mail]> Thomas Reed,
[e-mail] writes:
>How does one get a game copyrighted?  I've heard that you just write in
>the About box or somewhere that it's copyrighted, and it is, but I'm
>coming to doubt that a little bit.  Do you have to register with someone?
>
Read the recent articles in MacUser by Andy Ihnatko (1994 April and May,
I think).  "Automatic" copyrights last for three years; if you want
longer, then you have to fill out some paperwork with the U.S. Copyright
office.

Jim Conner

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

>From [e-mail] (John Nagle)
Date: Thu, 24 Mar 1994 18:27:23 GMT
Organization: NETCOM On-line Communication Services (408 241-9760 guest)

[e-mail] (Jon Wätte) writes:
>In <[e-mail]> Thomas Reed <[e-mail]> writes:

>>How does one get a game copyrighted?  I've heard that you just write in
>>the About box or somewhere that it's copyrighted, and it is, but I'm
>>coming to doubt that a little bit.  Do you have to register with someone?

>As soon as you create something, it is covered by your copyright.
>It's inherent in the fact that you created it. You don't have to
>say anything anywhere in the program or documentation; it's still
>copyrighted.

      Yeah, but register anyway.  Call 202-707-9100 to get the forms.
It's cheap, around $18 or so.  You can't sue unless you register.

                        John Nagle

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

>From [e-mail] (Jon Wätte)
Date: 24 Mar 1994 21:52:06 GMT
Organization: The Royal Institute of Technology

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

>I think).  "Automatic" copyrights last for three years; if you want
>longer, then you have to fill out some paperwork with the U.S. Copyright
>office.

Nope; ANY copyright (especially automatic copyright, since that's
the only copyright there is) lasts 50 years after the authors death.
Anything else is a breach of the Berne convention which the US signed,
not too many years ago.
--
 -- Jon W{tte, [e-mail], Mac Hacker Deluxe --
 "Don't stick a Fork in your Eye.

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

>From [e-mail] (Shawn O'Donnell)
Date: Thu, 24 Mar 1994 04:11:09 GMT
Organization: M.I.T. Media Laboratory

Copyrights are pretty easy.  You write

            Copyright [c in a circle] 1994 Thomas Reed

on whatevever.  On a program, put it where you say who wrote it--in an
About Box or whatever comes up when you launch the program.  c-in-a-
circle is option-G.

Copyrighting is free, but the do-it-yourself copyright only lasts 3
years.  The kind you get from the Copyright Office (for a $20 fee)
lasts until 50 years after you die (if you do that sort of thing.)
The Copyright Office's hotline number is 202 707 3000.

There's an article by Andy Ihnatko in April MacUser that explains the
whole thing.  If you're thinking of making a living off of your
programming and you can't afford a lawyer at this point, check out
Andy's column.


--Shawn

Copyright (c) 1994 Blah Blah Blah

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

>From [e-mail] (Charlie Reading)
Date: 24 Mar 94 16:18:21 GMT
Organization: CompuServe Incorporated

In article <2mrlnd$[e-mail]> Jon W!tte, [e-mail]
writes:
>If the case comes to court, however, you'd be well-adviced to have
>good documentation of when you created the program, and that YOU
>created it. There are methods of "oficially" registering works
>for such archival purposes, but they're purely volountary.

I believe that you also need an officially registered copyright if you
expect
monetary damages from violators.  I think you can still get them to stop
violating
the copyright, even without registering.  If I remember correctly (and
they
haven't changed the law since I looked into it), it is fairly simple and
cheap
to do.  You should be able to get the information from a local library.

( not a lawyer )

Charlie Reading
CompuServe Incorporated

Any opinions expressed are not necessarily those of my employer.

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

>From [e-mail] (Owen M. Hartnett)
Date: Mon, 28 Mar 1994 02:39:40 GMT
Organization: Brown University Department of Computer Science

In article <2msegd$[e-mail]> [e-mail] (Charlie Reading) writes:
>In article <2mrlnd$[e-mail]> Jon W!tte, [e-mail]
>writes:
>>If the case comes to court, however, you'd be well-adviced to have
>>good documentation of when you created the program, and that YOU
>>created it. There are methods of "oficially" registering works
>>for such archival purposes, but they're purely volountary.
>
>I believe that you also need an officially registered copyright if you
>expect
>monetary damages from violators.  I think you can still get them to stop
>violating
>the copyright, even without registering.  If I remember correctly (and
>they
>haven't changed the law since I looked into it), it is fairly simple and
>cheap
>to do.  You should be able to get the information from a local library.
>
>( not a lawyer )
>

I'm not a lawyer either, but lawyers I've talked to say that you can
collect monetary damages from copyright infringement, but you have to
substantiate the amount of damages (i.e. they ripped off 3 copies @ $79.95
each, you owe me 239.85). With registration, you can also collect
punitive damages, which can be substantial.

-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] (AndrewWelc)
Date: 27 Mar 1994 23:05:01 -0500
Organization: America Online, Inc. (1-800-827-6364)

In article <[e-mail]>, [e-mail] (Owen M.
Hartnett) writes:

>>>
I'm not a lawyer either, but lawyers I've talked to say that you can
collect monetary damages from copyright infringement, but you have to
substantiate the amount of damages (i.e. they ripped off 3 copies @ $79.95
each, you owe me 239.85). With registration, you can also collect
punitive damages, which can be substantial.
<<<<
That is sort of correct.  With copyright violations, you can collect actual
damages (which you've outlined above) as well as statutory damages.  With
statutory damages, you don't have to prove an actual monetary loss like you do
for actual damages.

However your copyright must be registered (by filling out the proper forms,
etc.) PRIOR to the copyright violation if you want to collect.

Andrew

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

>From Charlie Reading <[e-mail]>
Date: 25 Mar 1994 20:16:10 GMT
Organization: CompuServe Incorporated

In article <2mt227$[e-mail]> Jon W!tte, [e-mail]
writes:
>Nope; ANY copyright (especially automatic copyright, since that's
>the only copyright there is) lasts 50 years after the authors death.
>Anything else is a breach of the Berne convention which the US signed,
>not too many years ago.

I believe the deal is:
    [1] Everything is created with an automatic copyright.
    [2] You need to register that copyright if you expect to collect
        monetary damages (but you can have violators stopped in any
        case).
    [3] You have 3 years to file for a copyright or correct any problems
        with it, otherwise it will not be registered (and allow you to
        collect monetary damages), but still allow you to stop violators.

    ( again, not a lawyer)

--
Charlie Reading
CompuServe Incorporated
[e-mail]
Any opinions expressed are not necessarily those of my employer.

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

>From [e-mail] (Mark E. Kern)
Date: 31 Mar 1994 17:35:13 GMT
Organization: Spurious Productions

In article <2mvgqa$[e-mail]>, Charlie Reading
<[e-mail]> wrote:

> In article <2mt227$[e-mail]> Jon W!tte, [e-mail]
> writes:
> >Nope; ANY copyright (especially automatic copyright, since that's
> >the only copyright there is) lasts 50 years after the authors death.
> >Anything else is a breach of the Berne convention which the US signed,
> >not too many years ago.
>
> I believe the deal is:
>     [1] Everything is created with an automatic copyright.
>     [2] You need to register that copyright if you expect to collect
>         monetary damages (but you can have violators stopped in any
>         case).
>     [3] You have 3 years to file for a copyright or correct any problems
>         with it, otherwise it will not be registered (and allow you to
>         collect monetary damages), but still allow you to stop violators.
>
>     ( again, not a lawyer)

   I know of no 3 year limitation.  You may register at any time before the
infringement to collect full damages.  If you register after the alledged
infringement, you can still get an injunction and collect damages, but you
may not be able to get attorney fees.  This 3 year rumor has got to stop -
it doesn't exist in the U.S.

--
= [e-mail]
= [e-mail]
= [e-mail]
= Looking for old Pixar hardware and U.S. Acorn BBS machines

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

>From [e-mail] (Tim Smith)
Date: 1 Apr 1994 07:03:27 GMT
Organization: University of Washington School of Law, Class of '95

Thomas Reed  <[e-mail]> wrote:
>How does one get a game copyrighted?  I've heard that you just write in
>the About box or somewhere that it's copyrighted, and it is, but I'm
>coming to doubt that a little bit.  Do you have to register with someone?

I see that others have responded already, but I also see assorted mistakes
in their posts, so I'll throw in my opinion.  Note that I'm not a lawyer.
For legal advice, contact a lawyer.

It's copyrighted as soon as you write it.  (Those who tell you that it is
not copyrighted until you publish it with a copyright notice missed the
Copyright Act of 1976.  They still think we are under the Copyright Act
of 1909.  The '76 Act got rid of the publication requirement.  They
also missed the Berne Implementation Act of 1988 (I may have the year
wrong), which got rid of the notice requirement).

Copyright notice is still a very good idea, for it makes it much harder
for someone who rips you off to claim that they thought your game was
in the public domain.  Here's what the statute says about the form of
notice and why it is a good idea:

    Sec. 401. Notice of copyright: Visually perceptible copies

      (a) General Provisions. - Whenever a work protected under this
    title is published in the United States or elsewhere by authority
    of the copyright owner, a notice of copyright as provided by this
    section may be placed on publicly distributed copies from which the
    work can be visually perceived, either directly or with the aid of
    a machine or device.

      (b) Form of Notice. - If a notice appears on the copies, it shall
    consist of the following three elements:

        (1) the symbol (the letter C in a circle), or the word
      'Copyright', or the abbreviation 'Copr.'; and

        (2) the year of first publication of the work; in the case of
      compilations, or derivative works incorporating previously
      published material, the year date of first publication of the
      compilation or derivative work is sufficient.  The year date may
      be omitted where a pictorial, graphic, or sculptural work, with
      accompanying text matter, if any, is reproduced in or on greeting
      cards, postcards, stationery, jewelry, dolls, toys, or any useful
      articles; and

        (3) the name of the owner of copyright in the work, or an
      abbreviation by which the name can be recognized, or a generally
      known alternative designation of the owner.

      (c) Position of Notice. - The notice shall be affixed to the
    copies in such manner and location as to give reasonable notice of
    the claim of copyright.  The Register of Copyrights shall prescribe
    by regulation, as examples, specific methods of affixation and
    positions of the notice on various types of works that will satisfy
    this requirement, but these specifications shall not be considered
    exhaustive.

      (d) Evidentiary Weight of Notice. - If a notice of copyright in
    the form and position specified by this section appears on the
    published copy or copies to which a defendant in a copyright
    infringement suit had access, then no weight shall be given to such
    a defendant's interposition of a defense based on innocent
    infringement in mitigation of actual or statutory damages, except
    as provided in the last sentence of section 504(c)(2).

Registration is also a good idea.  You register a copyright by filling out
a simple form and paying a small fee (I believe it is currently $20).
You can probably get information on how to obtain this form by asking
the reference desk at your local library.

What registration does for you is make it easier to nail people who rip
you off.  If someone rips you off and you sue, there are two kinds of
damages provided for in the Copyright Act.  One is called actual damages.
These are, basically, how much money you lost because of the infringement,
and how much profit the infringer made from the infringement.  The problem
with actual damages is proving that you actually lost sales, or that the
infringer made profits.

The other type of damages is called statutory damages.  They range from
around $500 to around $20,000 (or up to around $100,000 if you can show
that the infringement was willful) (I don't have the absolute latest
copy of the Copyright Act handy, so the numbers I'm giving may be a little
low).  If you ask for statutory damages, the judge decides how much to
award.

You can only ask for statutory damages if you've registered.  Also, if you
register, when you sue and win, you can ask the judge to make the other
side pay for your lawyer.

(Actually, you have to be registered to sue for actual damages, too, or to
ask for an injunction to stop someone from copying your work, but that is
no problem.  All you do, once you discover the infringement, is go and
register, and *then* you sue.  But for statutory damages and attorney
fees, you've got to have registered either before the infringement, or
within three months of publication).

Look on news.answers for the copyright FAQ for more information.

--Tim Smith


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

>From [e-mail] (Tim Smith)
Date: 1 Apr 1994 07:06:13 GMT
Organization: University of Washington School of Law, Class of '95

Shawn O'Donnell <[e-mail]> wrote:
>Copyrighting is free, but the do-it-yourself copyright only lasts 3
>years.  The kind you get from the Copyright Office (for a $20 fee)

Totally wrong.

>There's an article by Andy Ihnatko in April MacUser that explains the
>whole thing.  If you're thinking of making a living off of your
>programming and you can't afford a lawyer at this point, check out
>Andy's column.

Ah, that explains it.  I don't know what Ihnatko was smoking when he
wrote that column, but whatever it was, it was real powerful.
(Actually, his column was fairly reasonable, except for that howler
about 3 years).

--Tim Smith

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

>From [e-mail] (Tim Smith)
Date: 1 Apr 1994 07:09:27 GMT
Organization: University of Washington School of Law, Class of '95

Mark E. Kern <[e-mail]> wrote:
>   I know of no 3 year limitation.  You may register at any time before the
>infringement to collect full damages.  If you register after the alledged
>infringement, you can still get an injunction and collect damages, but you
>may not be able to get attorney fees.  This 3 year rumor has got to stop -
>it doesn't exist in the U.S.

If you register after the infringement, you can still collect *actual*
damages, but not statutory damages.

As far as that 3 year rumor goes, I wonder if anyone has told Macwhatever
(whatever=="User" or "world"...I don't remember which magazine it was)
about their mistake?  Or is everyone assuming someone else will write and
tell them (that's what I'm doing!).

--Tim Smith

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

>From [e-mail] (Tim Smith)
Date: 1 Apr 1994 07:14:53 GMT
Organization: University of Washington School of Law, Class of '95

AndrewWelc <[e-mail]> wrote:
>That is sort of correct.  With copyright violations, you can collect actual
>damages (which you've outlined above) as well as statutory damages.  With
>statutory damages, you don't have to prove an actual monetary loss like you do
>for actual damages.

Almost 100% correct.  However, you can elect statutory damages *instead* *of*
actual damages.  You don't get both.  Here's section 504(c) of the
Copyright Act:

      (c) Statutory Damages. -

        (1) Except as provided by clause (2) of this subsection, the
      copyright owner may elect, at any time before final judgment is
      rendered, to recover, instead of actual damages and profits, an
      award of statutory damages for all infringements involved in the
      action, with respect to any one work, for which any one infringer
      is liable individually, or for which any two or more infringers
      are liable jointly and severally, in a sum of not less than $500
      or more than $20,000 as the court considers just.  For the
      purposes of this subsection, all the parts of a compilation or
      derivative work constitute one work.

(The numbers may be wrong--the above is from the U.S. Code CD-ROM that someone
uploaded to etext.archive.umich.edu.  That's a year or two out of date, I
believe, and so Congress may have tinkered with the amounts since then).

--Tim Smith

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

>From [e-mail] (Anders Wahlin)
Subject: Print Manager question.
Date: Tue, 29 Mar 1994 08:04:21 GMT
Organization: Hum Fak:s Dataservice

I would like to know how it's possible to determine how many pages I'm
printing (after all pages has been printed). I want to do this in an INIT.
Can someone please tell me if this is possible and if it is, maby give me a
little clue on how to do it?

Thanks!

--
Anders Wahlin
[e-mail]

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

>From [e-mail] (Tom Dowdy)
Date: Wed, 30 Mar 1994 01:51:11 GMT
Organization: Apple Computer, Inc.

In article <[e-mail]>, [e-mail]
(Anders Wahlin) wrote:

> I would like to know how it's possible to determine how many pages I'm
> printing (after all pages has been printed). I want to do this in an INIT.
> Can someone please tell me if this is possible and if it is, maby give me a
> little clue on how to do it?

Using QuickDraw GX this is trivial.

Your Printing Extension simply has to send the Send_GXCountPages()
message, which will return to you the number of pages in the
spool file.

Without using QuickDraw GX this is just about impossible, and
almost certain to break on a system with GX.

--
 Tom Dowdy                  Internet: [e-mail]
 Apple Computer MS:302-3KS  UUCP: {sun,voder,amdahl,decwrl}!apple!dowdy
 1 Infinite Loop            AppleLink: DOWDY1
 Cupertino, CA 95014
 "The 'Ooh-Ah' Bird is so called because it lays square eggs."

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

>From [e-mail] (Mike Kurtinitis)
Date: 31 Mar 1994 17:30:52 GMT
Organization: Northwest Nexus Inc.

In article <[e-mail]>, [e-mail]
(Anders Wahlin) wrote:

> I would like to know how it's possible to determine how many pages I'm
> printing (after all pages has been printed). I want to do this in an INIT.
> Can someone please tell me if this is possible and if it is, maby give me a
> little clue on how to do it?
>

If you _really_ need to do things this way, you might consider patching the
PROpenPage trap. I'm not an expert, but I think you might be able to pull
it off and remain compatible with the cloud of Mac models out there.

Mike
[e-mail]

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

>From [e-mail] (Tom Dowdy)
Date: Fri, 1 Apr 1994 05:00:24 GMT
Organization: Apple Computer, Inc.

In article <[e-mail]>,
[e-mail] (Mike Kurtinitis) wrote:

> In article <[e-mail]>, [e-mail]
> (Anders Wahlin) wrote:
>
> > I would like to know how it's possible to determine how many pages I'm
> > printing (after all pages has been printed). I want to do this in an INIT.
> > Can someone please tell me if this is possible and if it is, maby give me a
> > little clue on how to do it?
> >
>
> If you _really_ need to do things this way, you might consider patching the
> PROpenPage trap. I'm not an expert, but I think you might be able to pull
> it off and remain compatible with the cloud of Mac models out there.

I doubt it.

It isn't nearly as simple as this sounds.  First off, it's not a trap
by itself, it's the _PrGlue trap, and you'll need to watch for the
selector.  Then, it's Pascal based, with the # of paramters that
you need to strip around encoded via the selector.

This is some tricky assembly -- but do-able if you like having
this sort of fun.

Now for the real fun.  Some applications don't call the PrGlue trap,
rather they vector through the old mechanism, which isn't patchable
unless you install your own version of the .Print driver.  And this
is extra special fun as there's a version of the .Print driver in
the process manager, that sometimes (but not always) overrides
the one in the actual print driver.  You also sometimes need
to supply your own stub PDEFs as well -- but usually not for
just patching one of the selector.

Once you've waded through all of this, you can rest safe in
the knowlage that your patch is 100% guaranteed to break on
a system with QuickDraw GX installed.

--
 Tom Dowdy                  Internet: [e-mail]
 Apple Computer MS:302-3KS  UUCP: {sun,voder,amdahl,decwrl}!apple!dowdy
 1 Infinite Loop            AppleLink: DOWDY1
 Cupertino, CA 95014
 "The 'Ooh-Ah' Bird is so called because it lays square eggs."

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

>From [e-mail] (Chris Waters)
Subject: Sending AppleEvents from AppleScript?
Date: 21 Mar 1994 21:13:34 GMT
Organization: University of Auckland

How can I send an apple event from within an AppleScript program? The event
I want to send is application specific but its format is simple.

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

>From [e-mail] (John W. Baxter)
Date: Mon, 21 Mar 1994 16:56:54 -0800
Organization: Internet for the Olympic Peninsula

In article <2ml2lu$[e-mail]>, [e-mail]
(Chris Waters) wrote:

> How can I send an apple event from within an AppleScript program? The event
> I want to send is application specific but its format is simple.

You essentially have two choices.  You can give the target application an
'aete' resource which describes the event you are sending (getting started
with building these resources is somewhat daunting), or you can use the
almost undocumented generic form of the event.  Here's a sample of that,
from StuffIt:

    <<event LANDgmry>> given Çclass menpÈ:1.397314593E+9, Çclass res1È:200
    Çevent LANDgmhdÈ given Çclass menpÈ:1.397314593E+9, Çclass idixÈ:0

[I've represented first instance of the chevron characters using a pair of
<< and >>.  These are actually the "chevrons" (quotes in many languages):
option-\ and option-shift-\ on US keyboards...I don't know about yours.
I've let Eudora do its quoted-printable trick with the other chevrons.]


Those two events shouldn't have been recorded...they are menusharing
transactions with Frontier [StuffIt was delivered before the details of
recording were widely known...it's simple to fix that...one bit flag in one
AE manager call will do it.  Next version, one assumes.]

The 8 characters following the word "event" are the event class and event
ID.  The given stuff is the parameter's other than the '----' parameter
(which these events do not have...it would come first, as just a value.

You may want to know why the menp parameter is shown as a floating point
number.  So, frankly, do I.

Gory details on request (better for almost all if asked by email, I think).
--
John Baxter    Port Ludlow, WA, USA  [West shore, Puget Sound]
   [e-mail]

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

>From Jens Alfke <[e-mail]>
Date: Fri, 1 Apr 1994 00:02:49 GMT
Organization: Apple Computer

Chris Waters, [e-mail] writes:
> How can I send an apple event from within an AppleScript program? The event
> I want to send is application specific but its format is simple.

One way would be to write an 'aete' resource for the app in question and
stuff it into the app. Using the 'aete' generator stack on the AS SDK this
isn't too painful.

There's also a syntax in AS for sending arbitrary events that don't have
terminologies. It involves lots of double-angle-brackets or 'guillemots'
(option-backslash and option-shift-backslash.) The name of the event is just
the eight letter code inside guillemots. Unfortunately I can't remember right
now how you specify parameters... did this make it into the documentation?

--Jens Alfke
  jens_alfke@powertalk              Rebel girl, rebel girl,
            .apple.com              Rebel girl you are the queen of my world

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

>From [e-mail] (Mike Cohen)
Date: Fri, 1 Apr 1994 18:55:49 GMT
Organization: ISIS International

Jens Alfke <[e-mail]> writes:

>Chris Waters, [e-mail] writes:
>> How can I send an apple event from within an AppleScript program? The event
>> I want to send is application specific but its format is simple.

>There's also a syntax in AS for sending arbitrary events that don't have
>terminologies. It involves lots of double-angle-brackets or 'guillemots'
>(option-backslash and option-shift-backslash.) The name of the event is just
>the eight letter code inside guillemots. Unfortunately I can't remember right
>now how you specify parameters... did this make it into the documentation?

It looks something like this:

<<event AAAABBBB>> direct_object GIVEN <<class XXXX>> some_parameter...

Of course, use opt-backslash & opt-shift backslash instead of << and >>.
--
Mike Cohen - [e-mail]
NewtonMail, eWorld: MikeC / ALink: D6734 / AOL: MikeC20

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

>From [e-mail] (Timothy Hart)
Subject: Trouble with 'WIND's and window staggering
Date: Sat, 19 Mar 1994 07:55:04 GMT
Organization: Jack's Amazing CockRoach Capitalist Ventures

I've just written my first little mac application shell (I'm sure some of
you remember this!!). Everything seems to be working fine except for
staggering the new, untitled windows as they open. If I interpret
NIM:Toolbox correctly, all I should need to do is set the 'stagger in
parent window screen' constant in the 'WIND' resource, right?? My window
is a 'noGrowDocProc', and I'm running 7.0.1 ( didn't auto positioning
become available in 7.0?). I'm also creating my resources with Resedit
2.1.1. Am I interpreting NIM incorrectly? All my windows appear in
*exactly* the same place, and I have *no* positioning code!!

Please respond to [e-mail]. in addition to this newsgroup.

--
     [e-mail] (Timothy Hart)
- ----------jackatak.raider.net   [phone] ------------

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

>From Jens Alfke <[e-mail]>
Date: Fri, 1 Apr 1994 02:03:29 GMT
Organization: Apple Computer

Timothy Hart, [e-mail] writes:
> 2.1.1. Am I interpreting NIM incorrectly? All my windows appear in
> *exactly* the same place, and I have *no* positioning code!!

The window-stagger flag doesn't always work. In my experience it _usually_
works, but fails often enough that I finally had to stop using it and do my
own window staggering. But it did _usually_ work for me. Try setting it to
stagger on the main screen instead of the parent's screen.

--Jens Alfke
  jens_alfke@powertalk              Rebel girl, rebel girl,
            .apple.com              Rebel girl you are the queen of my world

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

>From [e-mail] (ParserInc)
Subject: When-Where WWDC '94 ?
Date: 17 Mar 94 23:50:11 GMT
Organization: (none)

Organization: America Online, Inc. (1-800-827-6364)


I would very much like to attend this year, (my first on the Mac), but I can't
find out the date or location.  Also what does it cost ?

Thanks in advance,

Keith Brownlow.
[e-mail]

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

>From Frank Price <[e-mail]>
Date: 25 Mar 1994 17:38:26 GMT
Organization: Pomona College

In article <[e-mail]> ParserInc,
[e-mail] writes:
>I would very much like to attend this year, (my first on the Mac), but I
can't
>find out the date or location.  Also what does it cost ?

WWDC Dates are May 15-20, and it is at the San Jose Convention Center I
think.  However, the one thing that really popped off the page is the
price.  $325 per DAY.  Somebody please tell me what you get for $325 a
DAY!!??!

-Frank
_______________________________________________________________________
| Frank Price   |  [e-mail]                        |
|_______________|______________________________________________________|

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

>From [e-mail] (Matt Mora)
Date: 25 Mar 1994 16:30:38 -0800
Organization: SRI International, Menlo Park, CA

In article <2mv7ii$[e-mail]> Frank Price <[e-mail]> writes:
>In article <[e-mail]> ParserInc,
>[e-mail] writes:
>>I would very much like to attend this year, (my first on the Mac), but I
>can't
>>find out the date or location.  Also what does it cost ?
>
>WWDC Dates are May 15-20, and it is at the San Jose Convention Center I
>think.  However, the one thing that really popped off the page is the
>price.  $325 per DAY.  Somebody please tell me what you get for $325 a
>DAY!!??!


Let's See:

1. A day off work.
2. Free meals. (well its worked into the price of admission:-)
3. Play games for free.
4. Sit in big rooms like leemings, staring at a large screen while marketeers
   preach to the converted. (it reminds me of a commercial that I saw in 1984
   during the superbowl :-)
5. Play with lego's on company time.
6. You get a nice shirt
7. You get some buttons and all the paper that you want to stuff in to a
   canvas bag they give you.
8. You get to play "stump the experts"
9. You get a chance to air your feelings to Apple's upper managment.
10.You get to hang out with John Norstad and bug him about features
   that Newswatcher needs.



Xavier






--
___________________________________________________________
Matthew Xavier Mora                       [e-mail]
SRI International                       [e-mail]
333 Ravenswood Ave                    Menlo Park, CA. 94025

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

>From [e-mail] (John Norstad)
Date: Fri, 25 Mar 1994 20:50:48 -0600
Organization: Northwestern University

In article <2mvvne$[e-mail]>, [e-mail] (Matt Mora) wrote:

> 10.You get to hang out with John Norstad and bug him about features
>    that Newswatcher needs.

"NewsWatcher features" is an oxymoron.

I'll bring my PowerBook. We can blow off the sessions and hang out out on
the veranda and write code to make the about box prettier.

--
John Norstad
Academic Computing and Network Services
Northwestern University
[e-mail]

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

>From [e-mail] (Brian Clark)
Date: Fri, 25 Mar 1994 21:57:46 -0600
Organization: Northwestern University

In article <[e-mail]>,
[e-mail] (John Norstad) wrote:

> I'll bring my PowerBook. We can blow off the sessions and hang out out on
> the veranda and write code to make the about box prettier.


Actually, it's Disinfectant that need a prettier About dialog. It has this
dithered picture ... :-)

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

>From [e-mail] (Jon Wätte)
Date: 26 Mar 1994 10:36:00 GMT
Organization: The Royal Institute of Technology

In <2mv7ii$[e-mail]> Frank Price <[e-mail]> writes:

>think.  However, the one thing that really popped off the page is the
>price.  $325 per DAY.  Somebody please tell me what you get for $325 a
>DAY!!??!

It's about the same price as last year; It is $1100 for the whole
week.

You get the inside gospel from Apple, usually one or a few CDs with
stuff ranging from junk to really interesting pre-release versions,
you get a chance to schmooze with Apple engineers, and to take your
code problems to DTS even if you aren't a Partner.

There are also testing labs, third-party expos, lunches, sodas,
breakfasts, a party that's gotten less exciting the last two years,
and a general we-all-love-the-mac-and-are-proud-of-it atmosphere.

If you want something less expensive, even more informal, and less
up-stage, you should try MacHack in Ann Arbour in June. It's rowdy,
it's small, it's fun, and I probably can't come this year unless I
find a sponsor :-( (It's that or WWDC)


Cheers,

                    / h+
--
 -- Jon W{tte, [e-mail], Mac Hacker Deluxe --
 "Don't use the Layer Manager"

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

>From [e-mail] (Tom Dowdy)
Date: Fri, 1 Apr 1994 18:02:52 GMT
Organization: Apple Computer, Inc.

In article <2mvvne$[e-mail]>, [e-mail] (Matt Mora)
wrote:

> >WWDC Dates are May 15-20, and it is at the San Jose Convention Center I
> >think.  However, the one thing that really popped off the page is the
> >price.  $325 per DAY.  Somebody please tell me what you get for $325 a
> >DAY!!??!
>
> 4. Sit in big rooms like leemings, staring at a large screen while marketeers
>    preach to the converted. (it reminds me of a commercial that I saw in 1984
>    during the superbowl :-)

Actually, even more fun is to watch what happens after a session,
when all of those folks who spent $325 decide to extract that
much information from the speaker by all asking questions at
a high rate of speed and blocking the speaker's exit from
the stage.

I bet it's *really* fun to watch.  It's not much fun to participate
in, at least not on the receiving end :-)

BTW: regarding cost. I doubt Apple makes money on this little
get together, and this convention center is REALLLLY expensive
to rent.  If you count the "lost engineering time" to Apple,
it's even more.  For many Apple folks this is a weeklong 16
hour day, no-sleep, caffine fest -- trying to make sure
that it's *great* for those who pay to attend.

Most of the folks who speak there are Real (tm) Apple
Engineers, and most are even nice about answering questions in
the hallways and such.  If you need hot new info, and you don't
have any other way to get it -- it's certainly worth it.  If
you just want to hang out, and are always looking for direct
value to you for the money, it may not be worth it.

If you are in the bay area and aren't coming to the convention
itself (due to cost, mentioned above), you might consider attending
the netters dinner (planning underway now, sure to be a real
zoo this year) to chat with some of the folks who
you know only by name.  I always have a great time and want
to thank Mike Pierce for taking on this awful-wonderful task!

--
 Tom Dowdy                  Internet: [e-mail]
 Apple Computer MS:302-3KS  UUCP: {sun,voder,amdahl,decwrl}!apple!dowdy
 1 Infinite Loop            AppleLink: DOWDY1
 Cupertino, CA 95014
 "The 'Ooh-Ah' Bird is so called because it lays square eggs."

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

>From [e-mail] (Jonathan D Baumgartner)
Subject: Where is DropShell?
Date: 31 Mar 1994 20:47:21 GMT
Organization: Computing & Information Services, University of New

I looked at info-mac, umich, and the alt.sources site, but couldn't
find it.  As I recall, it was freeware.

jon
--
Jonathan D. Baumgartner        [e-mail]
Computing & Information Services, University of New Hampshire

           "It's just a matter of opinion." -- Primus

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

>From [e-mail] (Stephan Somogyi)
Date: Fri, 1 Apr 1994 07:02:48 GMT
Organization: MacUser Magazine US

In article <2nfcsp$[e-mail]>, [e-mail]
(Jonathan D Baumgartner) wrote:

> I looked at info-mac, umich, and the alt.sources site, but couldn't
> find it.  As I recall, it was freeware.

ftp://netcom8.netcom.com//pub/leonardr/Hacks/DropShell.sit.hqx

However, this version needs some work before it can be used with the
Universal Headers to make native apps.

Both Leonard and I have made the necessary changes separately, but neither
of us feels comfortable enough with our mods to just release them to the
world. If you really need a native-capable DropShell, drop either Leonard
or myself a line.

__________________________________________________________________________
Stephan Somogyi                 "Davidian Inside"                  MacUser

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

>From [e-mail] (Adriaan Tijsseling)
Subject: double click?
Date: 25 Mar 1994 15:00:48 +0100
Organization: Dept. of Philosophy, Utrecht University, The Netherlands

Hello,

I am trying to record a double click with the mouse. I have a code that checks if the time past after the last mouse click is smaller than or equal to DoubleTime. But this doesn't work. Am I supposed to wait after a mouseclick if a next mouseclick will occur within doubletime and at roughly the same location, or can I handle the mouseclick and then check the doubletime for a doubleclick.
Any help would be very appreciated,

Lots of thanks in advance,

Adriaan Tijsseling ,
[e-mail]


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

>From [e-mail] (Chuck Hoffman)
Date: Fri, 25 Mar 1994 17:37:22 GMT
Organization: GTE Laboratories

In article <2muqqg$[e-mail]>, [e-mail] (Adriaan
Tijsseling) wrote:

> Hello,
>
> I am trying to record a double click with the mouse. I have a code that checks if the time past after the last mouse click is smaller than or equal to DoubleTime. But this doesn't work. Am I supposed to wait after a mouseclick if a next mouseclick will occur within doubletime and at roughly the same location, or can I handle the mouseclick and then check the doubletime for a doubleclick.
> Any help would be very appreciated,
>

Just a piece of trivia.  The time for the double-click is from the time of
the mouse-up to the next mouse-down, though most people probably just time
from mouse-down to the next mouse-down.  Compare that with DoubleTime.
Location of the mouse is not part of it.

No, I wouldn't wait.  Just compare the times.

--
Chuck Hoffman
GTE Laboratories, Waltham, MA, USA
617-466-2131
- ------------------------------------------------
I'm not sure why we're here, but I am sure that
while we're here we're supposed to help each other.
- ------------------------------------------------

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

>From Maggie Burke <[e-mail]>
Date: Mon, 28 Mar 1994 16:27:19 GMT
Organization: Integrated Math Tools Project, UMass Dartmouth

In article <2muqqg$[e-mail]> Adriaan Tijsseling,
[e-mail] writes:
>I am trying to record a double click with the mouse. I have a code that
checks
>if the time past after the last mouse click is smaller than or equal to
>DoubleTime. But this doesn't work. Am I supposed to wait after a
mouseclick if
>a next mouseclick will occur within doubletime and at roughly the same
>location, or can I handle the mouseclick and then check the doubletime
for a doubleclick.
>Any help would be very appreciated,

I believe that because a double-click is supposed to be an extension of a
single-click, you can handle your single-click first.  Store the
information from that click (time and location).  On the next mouse-down
(each mouse down, actually), check to see if it happened within the
double click time.  You *do* want to make sure it's within a certain
distance of the last mouse-click as well, although I'm not sure where
that information is located.  I use MacApp, which takes care of that for
me.  :)

What is the problem you're having?  Maybe you could describe it in more
detail.

Hope this helps.
Maggie

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

>From [e-mail] (Keith Rollin)
Date: Thu, 31 Mar 1994 03:31:24 GMT
Organization: Little to none

In article <[e-mail]>, [e-mail] (Chuck
Hoffman) wrote:

> In article <2muqqg$[e-mail]>, [e-mail] (Adriaan
> Tijsseling) wrote:
>
> > I am trying to record a double click with the mouse. I have a code that
> > checks if the time past after the last mouse click is smaller than or
> > equal to DoubleTime. But this doesn't work. Am I supposed to wait after
> > a mouseclick if a next mouseclick will occur within doubletime and at
> > roughly the same location, or can I handle the mouseclick and then check
> > the doubletime for a doubleclick.
> >
>
> Just a piece of trivia.  The time for the double-click is from the time of
> the mouse-up to the next mouse-down, though most people probably just time
> from mouse-down to the next mouse-down.  Compare that with DoubleTime.
> Location of the mouse is not part of it.


I think I disagree with you on the location thing, Chuck. Location _should_
play a part in determining if a certain mouseDown is part of a
double-click. I find myself perfectly capable of clicking quickly across
lines in a document. In word processors that don't take location into
account, they get confused and think that I just double clicked on the
second word I clicked on, when I actually had clicked on one word and then
quickly clicked on another. This happens a lot when I aim for a particular
word, miss it, and then quickly correct myself.

Also take intervening events into account. If the user mousedowns, presses
a key, and mousedowns again -- all within the DoubleTime timespan, don't
count the two mousedowns as a double-click. When I'm busy mousing with one
hand and using the keyboard with the other (this happens a lot when
cut-and-pasting), I often see applications thinking that I double-clicked
when I really didn't.

- --------------------------------------------------------------------------
Keith Rollin --- Phantom Programmer --- Apple Computer, Inc. --- Team
Newton

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

>From [e-mail] (Keith P Jolley \aero\)
Date: 1 Apr 1994 16:10:59 GMT
Organization: San Diego State University Computing Services

: > Location of the mouse is not part of it.

: I think I disagree with you on the location thing, Chuck. Location _should_
: play a part in determining if a certain mouseDown is part of a
: double-click.

true-true.

Back to the archives, IM VI, pg 255, way down at the bottom:

..assume a double click has occured if...:
*The time of the mouse-up (note: UP) event and the mouse-down
 event differ by a number of ticks <= GetDblTime.

*The location of the two mouse-down events separated by the
 mouse-up events are sufficiently close to each other.

It then tells you to define close together for yourself.

Think Reference has a code snippet under getDblTime.
(I think they ignore the mouse-up part though...)
--

    /////////////////////////////////////////////////////
   //   Keith Jolley   //   [e-mail]   //
  /////////////////////////////////////////////////////
 //   the only exercise i ever get is the shakes... //
/////////////////////////////////////////////////////


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

>From [e-mail] (Jaeger)
Date: Sat, 02 Apr 94 13:38:36 CST
Organization: Kunikpok Kennels and Komputers (Pet Project)

The following code inserted in your event loop will help to find
double clicks.

  switch ( gEvent.what ) {//fragment of an event loop
     case mouseUp:
      gClikTime = gEvent.when;  //save mouseup time
      break;

    case mouseDown:
      if ( ( gEvent.when - gClikTime ) <= GetDblTime() )
           //its a double click
   break;

}
--
     Brian  Stern  >:-{)}
     [e-mail]

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

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