1. Win32Lib lists
Hello David (and other Win32Lib gurus):
I recently broke down and decided to learn Win32Lib. I discovered
that it isn't nearly as hard as I thought. There's just a lot of
routine names to memorize. I am currently working on a windows
program that I once did in VEL: Decision Helper. In the process
I have learned that the onChange event doesn't act the way I
expected it to concerning lists. It seems that an index change
is the only thing that triggers it. Adding an item to the list
doesn't. Is this a bug? Here is an example program that
demonstrates what I'm talking about:
----------------------------
include win32lib.ew
without warning
constant
Win = create (
Window, "List change event test program", 0, 100, 100, 200, 300, 0 ),
text = create (
EditText, "Hasn't worked yet...", Win, 0,0, 100,25, 0 ),
button = create (
DefPushButton, "Text to List", Win, 105,0, 85,25, 0 ),
list = create (
List, "", Win, 0,30, 190,245, 0 )
procedure onClick_button ()
addItem (list, getText (text))
end procedure
onClick [button] = routine_id ("onClick_button")
procedure onChange_List ()
setText (Win, "It worked!")
end procedure
onChange [list] = routine_id ("onChange_List")
WinMain (Win, Normal)
------------------------------------
later,
Lewis Townsend
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2. Re: Win32Lib lists
Lewis Townsend wrote:
> I discovered that [Win32Lib] isn't nearly as hard as I thought.
Thanks.
> It seems that an index change [on a list] is the only
> thing that triggers [an onChange event]. Adding an
> item to the list doesn't. Is this a bug?
No, it's a feature. It's supposed to indicate that a list _selection_ has
changed, not that the actual contents of list list has changed.
-- David Cuny
