A couple of very basic Rev object questions

[Doug Lerner]

On 1/19/04 8:11 AM, "Sarah Reichelt" <sarahr at genesearch.com.au> wrote:

>> I did find one error occurring though. I had an "go stack" command in
>> my
>> "openCard" handler. When I moved the handler to the stack script that
>> line
>> causes a repeated error (I tried changing it to an openStack handler
>> instead, but the same error occurs):
>> 
>>          executing at 12:01:49 PM
>> Type    Handler: error in statement
>> Object    mainstack
>> Line    go stack "onlineStack" as topLevel
>> Hint    openStack
>> 
>> 
>> That line causes no problem when in the card script instead.
>> 
>> Any idea why?
> 
> I would guess that the problem occurs when the script is in the stack
> script of your mainStack. It then gets called by ANY openCard message
> in any of the substacks as well as the mainStack. The solution, as you
> have discovered, is to put the handler in the card script instead,
> where it is only available to it's own stack and not to any other.
> 
> Alternatively, make sure all the substacks have their own openCard
> handler, even if it does nothing. That way the mesage will get trapped
> and not proceed up the hierarchy.

But the same error occurred when I renamed the handler as an openStack
handler. Maybe that also affected some other substacks that did not have
openStack handlers of their own. Of course!

doug