Clarion in general: Passing queue by address for updates 2004-12-26 -- Shankarj Newsgroups: softvelocity.public.clarion6
>Hello, I want to pass a queue to another procedure, have it change some
>values of the queue, and then I want to act on those changes in the
>original procedure.
>
>What's the best way these days to pass a queue back and forth?
You can TYPE a Queue and pass it as suggested by James and others, but I often
pass the Queue and the Queue fields by address especially if I need to
access/update only a few of the queue fields.
Proc1 PROCEDURE
MyQ QUEUE,PRE(MQ)
F1 STRING
F2 LONG
END
CODE
...
Proc2(MyQ, MQ:F1, MQ:F2)
...
RETURN
Proc2 PROCEDURE(*QUEUE InpQ, *STRING QFld1, *LONG QFld2)
CODE
QFld1 = 'ABC'
QFld2 = 1
ADD(InpQ)
!~!
QFld2 = 1
GET(InpQ, QFld1)
!~!
PUT(InpQ)
!~!
DELETE(InpQ)
!~!
It saves defining a TYPEd queue in the global area when you usage ig going to be limited.
JAT-HTH
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