Scope Problem on Standalones
David Burgun
dburgun at dsl.pipex.com
Fri Nov 25 08:34:28 EST 2005
Hi,
I have an application that is comprised on a number of stacks.
The top level stack is built into a Standalone and it calls other
stacks (.rev files) via "start using" and "go stack" commands.
When in the IDE the folder stucture is like this:
BaseFolder/StartUp.rev <-- just contains a splash screen
BaseFolder/Runtime/Stacks/StackA.rev
BaseFolder/Runtime/Stacks/StackB.rev
BaseFolder/Runtime/Stacks/StackC.rev
StartUp.rev figures out the correct path (by using the filename of
this stack property) and does a goto StackA.rev.
StackA in turn does a go to StackB.rev. This all works fine under the IDE.
When runnig as a standalone the folder structure is like this:
MacOSX/myApp.app <-- bundle
MacOSX/myApp.app/Contents/MacOS/MyApp (real applicaiton)
MacOSX/myApp.app/Contents/MacOS/Runtime/Stacks/StackA.rev
MacOSX/myApp.app/Contents/MacOS/Runtime/Stacks/StackB.rev
MacOSX/myApp.app/Contents/MacOS/Runtime/Stacks/StackC.rev
But when I run this StackB.rev does not get found/run.
I traced this down to some code in card 1 (the only card) of StackA.rev:
function LoadGlobalStacks
local myStackFIlePathName
local myStackFIlePath
local myGlobalStackFilePathName
put the filename of this stack into myStackFIlePathName
put myStackFIlePathName into myStackFIlePath
set itemDelimiter to :/"
delete item -1 of myStackFIlePath
set itemDelimiter to ","
put myStackFIlePath & "/StackB.rev" into myGlobalStackFilePathName
if there is not a stack myGlobalStackFilePathName return false
start using myGlobalStackFilePathName
return true
end LoadGlobalStacks
on preOpenStack
if LoadGlobalStacks() = false then
answer error "Cannot Find Global Stacks"
end if
set the menubar of this stack to "MainMenu"
end preOpenStack
The problem seems to be that in the LoadGlobalStacks() function the
string returned from:
put the filename of this stack into myStackFIlePathName
is "MacOSX/myApp.app" and not
"MacOSX/myApp.app/Contents/MacOS/Runtime/Stacks/StackA.rev" as expected.
I am guessing it's something to do with scope and being called from a
preOpenStack handler??? StackA.rev was enetered via a go stack
path/StackA from MacOSX/myApp.app and it looks like this context is
being used instead of the context of StackA.rev.
If so, what is the recommended way of doing this?? If not what am I
doing wrong?
Thanks in advance for any help.
All the Best
Dave
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