Why is the Stack ID wrong?

[Matt Denton]

Dear Chipp and List,

Thanks for the tip, however I don't think that really explains it.  In 
the case below we haven't added anything to the stack and if you 
inspect the stack in Rev the ID is correct.

Anyway it is a small lesson, and a bit of unlearning for me.  In the 
old HyperCard days, the ID was the best unique FIXED identifier for 
objects, stacks, cards. These objects could have the same name and the 
ID was sure to get you the correct card/stack etc.

Anyway I'm still scratching my head, bit of an unsolved problem and 
strangeness.  Anyone else got any ideas why you can't reference a stack 
by its ID?

Thanks again Chipp!

M@
Matt

On Wednesday, January 22, 2003, at 09:56 PM,  "Chipp Walters" 
<chipp at chipp.com> wrote:

> I checked this out in both RR and MC. You are correct. Here's my best
> thinking why this doesn't work.
>
> The ID of a stack continually changes, incrementing as you add 
> controls. So,
> using it as a stack reference in a script is probably never a good 
> thing,
> expecially if controls are ever added.
>

>> Create a new stack.  Add a button.  Put this script in the button:
>>
>> on mouseUp
>>    put the abbrev id of this stack into tThisID
>>    put tThisID
>>    hide tThisID
>> end mouseUp
>>
>> ... the msg box contains "stack id 1003" or whatever.  But the last
>> statement doesn't work, just an error!  I trawled the archives and
>> nothing, I'm sure I'm missin' something!
>>
>> Of course it WORKS if we have:
>>
>> on mouseUp
>>    put the long name of this stack into tThisID
>>    put tThisID
>>    hide tThisID
>> end mouseUp
>>
>> So why is the ID so obscure?  I've tried all my ol' HyperCard 
>> concepts,
>> just can't get my head around this one.  No sub-stacks, nothing.
>> M at tt