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Hugo Oliveira Dias
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 Posted: Sat Aug 16, 2003 12:46 pm Post subject: TListView and Threads |
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I've a ListView with queued downloads. When i start transfer, the
downloading
thread updates some fields and a progess bar in the Listview.
When i start the thread i give it the ListItem->Index. During the download,
if i insert another item in the Listview, it updates the wrong item.
Anyone as a good solution for this ?
Thanks in advance,
Hugo Oliveira Dias
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Yahia El-Qasem
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| Posted: Sat Aug 16, 2003 1:06 pm Post subject: Re: TListView and Threads |
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I won't give it the index but a pointer to the ListItem... this way you
always have the right item for updating etc AFAIK...
I would think that you need to use Synchronize when updating the ListItem
from the thread...
Just some guesses...
Yahia
"Hugo Oliveira Dias" <hugo.dias (AT) no-spam (DOT) pluricanal.net> schrieb im
Newsbeitrag news:3f3e2747 (AT) newsgroups (DOT) borland.com...
| Quote: | I've a ListView with queued downloads. When i start transfer, the
downloading
thread updates some fields and a progess bar in the Listview.
When i start the thread i give it the ListItem->Index. During the
download,
if i insert another item in the Listview, it updates the wrong item.
Anyone as a good solution for this ?
Thanks in advance,
Hugo Oliveira Dias
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Hugo Oliveira Dias
Guest
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| Posted: Sat Aug 16, 2003 2:19 pm Post subject: Re: TListView and Threads |
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I had already tried passing the pointer to the ListItem, but it didn't work.
I think it's because it's a virtual ListView.
Anyway i resolved the problem passing the pointer to the TList item used
for the Virtual ListView
Thanks for the tip.
Hugo Oliveira Dias
"Yahia El-Qasem" <Yahia.El-Qasem (AT) mgh (DOT) metro-ag.de> wrote
| Quote: | I won't give it the index but a pointer to the ListItem... this way you
always have the right item for updating etc AFAIK...
I would think that you need to use Synchronize when updating the ListItem
from the thread...
Just some guesses...
Yahia
"Hugo Oliveira Dias" <hugo.dias (AT) no-spam (DOT) pluricanal.net> schrieb im
Newsbeitrag news:3f3e2747 (AT) newsgroups (DOT) borland.com...
I've a ListView with queued downloads. When i start transfer, the
downloading
thread updates some fields and a progess bar in the Listview.
When i start the thread i give it the ListItem->Index. During the
download,
if i insert another item in the Listview, it updates the wrong item.
Anyone as a good solution for this ?
Thanks in advance,
Hugo Oliveira Dias
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Remy Lebeau (TeamB)
Guest
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| Posted: Sun Aug 17, 2003 7:04 am Post subject: Re: TListView and Threads |
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"Hugo Oliveira Dias" <hugo.dias (AT) no-spam (DOT) pluricanal.net> wrote
| Quote: | I had already tried passing the pointer to the ListItem, but
it didn't work. I think it's because it's a virtual ListView.
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You should have said that earlier. Correct, a virtual listview will not
work for what you are asking for. TListItem pointers are not valid for a
virtual ListView, as all operations actually share a single physical
TListItem, meaning that all TListItem pointers you obtain will always point
to the same physical memory. You would have to pass a pointer to the actual
data item where the ListView gets its information from. Sounds like you
already discovered that.
Gambit
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