1. RE: Listview and time...
Euman wrote:
> My guess is (and I'll keep working on it) that I'll need to get away
> from the
> win32libs mem functions
> and poke in each subdata myself only to achieve nominal speed increase..
>
> Any Suggestions?
The only other trick in the SQL utility you looked at was the partial
loading of the data. What I mean is I only load the first 100 records
or so and then check when the user scrolls to the end of the current
data. I then add the next block. If you want to bring up the data as
quick as possible you might consider loading the first few records and
then handling when the user actuall scrolls beyond the last item you
inserted.
Jonas
2. RE: Listview and time...
>Euman wrote:
>My guess is (and I'll keep working on it) that I'll need to get away
>from the win32libs mem functions and poke in each subdata myself only to
>achieve nominal speed increase..
My impression was that most applications only load as much of the tree as
needed, and dynamically add the nodes as the leaves are expanded.
-- David Cuny
3. RE: Listview and time...
Derek Parnell wrote:
> David's correct, and the only *really* tricky part is getting the scroll
> bar
> looking right. You might have to pretend that there are 2700 lines in a
> listview when at any given time there are only what's visible. Oh, and
> sorting could be fun too!
Derek,
Maybe this is not related but I accomplished incremental adding of list
view items with the following event handler:
procedure ResultsLV_onEvent ( int iMsg, atom wParm, atom lParm )
atom rtn_code, pos
if iMsg = WM_VSCROLL then
pos = sendMessage(ResultsLV, LVM_GETTOPINDEX, 0, 0) + 1
if pos >= last_rec - 20 then
loadNextBlock()
end if
end if
if iMsg = LVM_SORTITEMS then
returnValue(True)
end if
end procedure
onEvent[ResultsLV] = routine_id("ResultsLV_onEvent")
This way you don't have to draw the scroll bar and it also handles the
sorting issue (well, not really handling it, just ignoring it). Maybe
this would be a routine to include in Win32Lib?
Jonas
4. RE: Listview and time...
Travis,
----- Original Message -----
From: Travis Beaty <travisbeaty at arn.net>
Subject: Re: Listview and time...
> Hello All!
>
> My wonderful M$ email problem -- I mean program -- informed me that this
> post, and the one following, arrived on my computer on 12/31/99. Did this
> happen to anyone else? And they thought the Y2K bug was dead ...
>
> Happy Hunting,
>
> Travis Beaty
> Claude, Texas.
Nope. And I _am_ using OE5 (Am I the only one who's never had a
program -sorry- problem with OE5?). All messages correctly dated and, uh,
houred (?) Maybe your ISP?
Gerardo
