Hi Shari,
Remove the stack from memory, before opening the new version.
lock messages
delete stack "Your Stack" -- remove from memory
go stack "Mac HD/Folder/Your Stack.rev"
put the xVersion of stack "Your Stack" --> 10
unlock messages
Best regards,
Mark Schonewille
--
Economy-x-Talk Consulting and Software Engineering
http://economy-x-talk.com
http://www.salery.biz
Quickly extract data from your HyperCard stacks with DIFfersifier.
http://differsifier.economy-x-talk.com
Op 22-okt-2007, om 0:44 heeft Shari het volgende geschreven:
This problem is buggering me. My app creates a preferences stack
in some writeable folder (Preferences on Mac OSX and varying
locations on Windows depending on the system).
I want to be able to replace this stack with a newer version if
there is a need to.
The newer version has an xVersion number of 10, has been compressed
and saved as the stackData of the application itself.
The older version (in the Prefs folder) has an xVersion of 7.
When the app launches it checks the versions, and discovers that
the stack in the Prefs folder needs to be replaced. So it deletes
that stack. In testing I have it answer someMessage and with the
answer window open, can verify that the old stack is indeed deleted
from the prefs folder.
It then decompresses the stackData of the app and puts it into
binfile:prefsLocation. I know beyond a doubt that the stackData
has the right version of 10.
But after it decompresses and creates the new Prefs stack, I check
the version and it's 7, the same version of the deleted stack.
What am I missing? I had tried at one time to just have it copy a
stack from one folder to another, each stack having a different
name, having it copy and rename the stack, but no matter how I did
it I kept getting that annoying "stack is already running, do you
want to purge it?" dialog. So I thought to try the compress/
decompress/binfile approach instead.
I am using the same compress/decompress/binfile code that I have
already working with another stack. So I know this code is good.
Any thoughts? Suggestions? Is there a way to read the compressed
data and verify the xVersion before it actually creates the new stack?
Shari
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