Path: utzoo!utgpu!attcan!uunet!seismo!sundc!pitstop!sun!DATJN@NEUVM1.Bitnet
From: DATJN@NEUVM1.Bitnet (Jakob Nielsen Tech Univ of Denmark)
Newsgroups: comp.sys.mac.hypercard
Subject: How can I get instance variables in buttons
Message-ID: <77053@sun.uucp>
Date: 10 Nov 88 21:50:44 GMT
Sender: news@sun.uucp
Distribution: comp
Lines: 33
Approved: hyper-hackers%plaid@sun.com

I would like to be able to associate values with buttons
(e.g. a list of when it has been clicked, a pointer to a special
card field which would be different for each button, a text string different
from the name, etc.).

As far as I can see, the only place I can put such info is in the button
script, and I have hit upon the following solution which is not very
clean (since I want to be able to access the instance variables
from scripts higher up in the object hierarchy):


The button script contains:

on mouseUp
  instanceVarIdea -- start the script which tries out the idea
end mouseUp

on myText -- the instance variable "myText"
  global dummyParameter -- used to communicate the result of the instanceVar
  put "This is some text" into dummyParameter
end myText

---------------------------
The stack script contains:

on instanceVarIdea
  global dummyParameter
  send myText to the target -- calling the instance variable
  put dummyParameter into msg box
end instanceVarIdea


Do anybody have ideas for a cleaner way to program this??