For example:

!1-st Queue
qTest1               QUEUE,PRE()
Data                 STRING(20)
                     END

!qTest2 based from qTest1
qTest2               QUEUE(qTest1),PRE()
                     END
 

Thank you very much!
I have 2 more questions about queues:
1. How do I put data from a declared queue in a Browse box?
2. How do I filter queue's?

For example you can use a Listbox and insert queuefields in Listbox formatter. Don't forget:

?List1{PROP:FROM} = qTest1

I don't know any way to filter without to use a second queue. This queue you can fill filterd and display.

Ok, and how do I copy data from one queue to another?

In Clarion-Help are many examples for ADD/PUT/DELETE in a Queue.
For example:

FREE(qTest2)
LOOP i# = 1 TO RECORDS(qTest1)
  GET(qTest1, i#)
  IF ... THEN !Filter -Condition
    qTest2.Data = qTest1.Data
    ADD(qTest2)
  END
END


cagiv

Is it correct to use
qTest2 :=: qTest1
instead of
   qTest2.Data = qTest1.Data
   qTest2.Data2 = qTest1.Data2
   qTest2.Data3 = qTest1.Data3
   ...
in the loop ?

Of course, but you wanted filtered data in qTest2...
Now you have same data in both queues.

I keep getting an error because of the GET().
First my code was:

FREE(qTest2)
LOOP i# = 1 TO RECORDS(Queue:Browse:1)
  GET(Queue:Browse:1, i#)
    IF ERRORCODE() THEN
      MESSAGE(ERROR(),ERRORCODE())
      BREAK
    END
  IF ... THEN !Filter -Condition
    qTest2.Data = Queue:Browse:1.Data
    ADD(qTest2)
  END
END

But then it would just skip the loop so i wrote it like this:

FREE(qTest2)
i# = 1
LOOP
  GET(Queue:Browse:1, i#)
    IF ERRORCODE() THEN
      MESSAGE(ERROR(),ERRORCODE())
      BREAK
    END
  IF ... THEN !Filter -Condition
    qTest2.Data = Queue:Browse:1.Data
    ADD(qTest2)
  END
i#=i#+1
END

And the message is:
Entry Not Found.
Errorcode is 30