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Back to article list Search Articles Add Comment Printer friendly Direct link Browses and Listboxes: Using a queue reference in a listbox 2004-03-09 -- Jim Gambon Newsgroups: softvelocity.public.clarion6
Hi Robert,
> Can someone help me out with something not working.
Attached is a small hand-coded experiment showing the technique of NOT
putting a FROM attribute on the list control, and, then, at run-time, use
the {PROP:From} property assignment. The docs for C55 and C6 both show that
this is a read-only property for LISTs, but I wanted to try and make it
work, and it does. It seems the docs are wrong, or I'm reading them
incorrectly.
Let us know if this helps out. It doesn't cross threads, but it should get
you going.
Regards,
Jim Gambon
You can download the QRefList.ZIP file here.
QRefList.prj:
-- Queue Ref Listing
#noedit
#system win32
#model clarion dll
#pragma debug(vid=>full)
#compile "QRefList.CLW"
#link "QRefList.exe"
QRefList.clw:
PROGRAM
AQueueType QUEUE,TYPE
ALong LONG
AString STRING(40)
END !QUEUE
MAP
LoadQ PROCEDURE(*AQueueType TheQ)
END !MAP
AQRef &AQueueType
Window WINDOW('A Window'),AT(,,260,100),SYSTEM,GRAY
LIST,AT(5,4,250,91),USE(?List1),HVSCROLL,|
FORMAT('47L(2)|M~TheLong~@N_10@40L(2)|M~TheString~@S40@')
END
CODE
AQRef &= NEW(AQueueType)
LoadQ(AQRef)
OPEN(Window)
ACCEPT
IF EVENT() = EVENT:OpenWindow
?List1{PROP:From} = AQRef
END !IF
END
CLOSE(Window) ! Must Close Window before disposing the Queue
FREE(AQRef)
DISPOSE(AQRef)
RETURN
LoadQ PROCEDURE(*AQueueType TheQ)
Counter LONG
CODE
LOOP Counter = 1 TO 100
TheQ.ALong = Counter
TheQ.AString = 'List Item: ' & FORMAT(Counter,@N08)
ADD(TheQ)
END !LOOP
RETURN
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