How do I use a Tabbed Button???

[David Burgun]

Hi All,

Well I got my Tabbed Button Stack up and running! Many thanks to all 
those who helped!

In the end I decided to use seperate cards and a shared background 
object - works fine - Except (why is there always *something*??!!):

One of the fields that is in the Common Group is a Numeric Text Field 
with a number associated with it. The user can change this field by 
typing into it or they can increment/decrement it using an Arrow 
control. However, each Card has it's own value for this field, so 
switching between tabs loses the value.

For example, on tab 1 if the user sets the value to 5 and then 
selects tab 2, the value changes to blank.

How can I maintain just one value for this field?

I am using a Library Object to increment/decrement the field and this 
calls the closeField handler for the field in question. Could I do 
something there. Will this work if the user types in a number?

I was thinking that I could copy the current value into a Global, and 
then in the preOpenCard handler move the Global onto the field. But 
this won't work the first time. I suppose I could set up the Global 
in the preOpenStack handler.

One other thing is that this is a Numeric Only field, and if the user 
tries to enter non-numeric characters into it, I want to beep and 
throw away the bad characters.

Not sure what the best way to do this is? I am playing around now!

All the Best
Dave