background owners (and Re: unplaced grp)

[Dave Cragg]

At 2:54 pm -0600 20/5/03, Dar Scott wrote:
>On Tuesday, May 20, 2003, at 02:41 PM, Dave Cragg wrote:
>
>>  You can get a list of the backgrounds in the stack with the 
>>backgroundnames property. Then loop through each line, checking for 
>>"the number of cards of background <whatever> = 0"
>
>Arg!  I tried it and didn't get the syntax right.  I left out "of 
>cards" or something.

You may have just been surprised by the result as I was at first.

The backgroundNames property only returns groups whose 
backgroundBehavior is set to true. But "the number of cards of 
background x" will return the number irrespective of the 
backgroundBehavior setting. However, as someone pointed out, 
removing a background from a card automatically sets its 
backgroundBehavior to true, so it should produce the right results in 
this case.

But, it's possible to reset the backgroundBehavior of a removed 
background by script, so my first solution was not foolproof. This 
might be better:

put the number of backgrounds of this stack into tNum
repeat with i = 1 to tNum
   if the number of cards of background i of this stack = 0 then
     put the short name of background i of this stack & return after tList
   end if
end repeat
  ## do something with tList

It should also be more reliable if, for example, you need to find 
which backgrounds are placed on exactly 1 or more cards.

Cheers
Dave