PreOpenStack Question

[Phil Davis]

Hi Joe -

Nope, all those messages are sent through the message-passing hierarchy 
whenever a stack is opened (unless messages are locked).

They are sent by the engine in this order:
   preOpenStack
   openStack
   preOpenCard
   openCard

Each messages hits the opening card first, then the stack that contains 
that card. (There can be other objects in between - this is simplified)

If the opening card (card 1 by default) has handlers for all the 
messages, none of the messages will make it to the stack UNLESS the 
card-level handlers each end with the "pass" command. Like this:


-- card script -------------

on preOpenStack
   doCardThing1
   -- this message will go no further - not passed
end preOpenStack


on openStack
   doCardThing2
   pass openStack -- lets message continue down the path
end openStack



-- stack script ------------

on preOpenStack
   -- will never be executed - msg was not passed by card script
   doStackThing1
end preOpenStack


on openStack
   doStackThing2 -- will always be executed
end openStack


HTH -
Phil Davis



AbilityForms at aol.com wrote:
> Hi Everyone
> 
> Apparently when there is a "PreOpenStack" script the "OpenStack" script and 
> the "OpenCard" scripts are ignored. Is that true? If so how can I be sure those 
> scripts aren't ignored?
> 
> Joe,
> Orlando, Florida