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ListView->GetItemAt is NULL

 
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Roger
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PostPosted: Wed Mar 28, 2007 10:40 pm    Post subject: ListView->GetItemAt is NULL Reply with quote


I am using the MouseOver event with ListView as I have before but now
ListView->GetItemAt(X,Y) is always NULL and I have no idea why. I think
I am doing exactly the same thing as I have with a ListView that works,
obviously, I am not.

I would appreciate any suggestions for why ListView->GetItemAt(X,Y)
would be NULL? The ListView works fine except for this problem.

Thanks,
Roger
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Remy Lebeau (TeamB)
Guest
PostPosted: Thu Mar 29, 2007 12:04 am    Post subject: Re: ListView->GetItemAt is NULL Reply with quote


"Roger" <aretae (AT) magma (DOT) ca> wrote in message
news:460a9a14$1 (AT) newsgroups (DOT) borland.com...

Quote:
I am using the MouseOver event with ListView as I have before but
now ListView->GetItemAt(X,Y) is always NULL and I have no idea why.

Please show your actual code.


Gambit
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Roger
Guest
PostPosted: Thu Mar 29, 2007 12:56 am    Post subject: Re: ListView->GetItemAt is NULL Reply with quote


Quote:

Please show your actual code.

void __fastcall TformStockTableAlerts::ListViewAlertsMouseMove(TObject *Sender,
TShiftState Shift, int X, int Y)
{
ListItem = ListViewAlerts->GetItemAt(X,Y);
if (!ListItem) return; // ListItem is always NULL
ListViewAlerts->Hint = AnsiString(((LIST_ITEM_DATA *) ListItem->Data)->sName.c_str());
}

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Remy Lebeau (TeamB)
Guest
PostPosted: Thu Mar 29, 2007 2:15 am    Post subject: Re: ListView->GetItemAt is NULL Reply with quote
"Roger" <aretae (AT) magma (DOT) ca> wrote in message
news:460aba0f$2 (AT) newsgroups (DOT) borland.com...

Quote:
void __fastcall
TformStockTableAlerts::ListViewAlertsMouseMove(TObject *Sender,
TShiftState Shift, int X, int Y)
{
ListItem = ListViewAlerts->GetItemAt(X,Y);
if (!ListItem) return; // ListItem is always NULL
ListViewAlerts->Hint = AnsiString(((LIST_ITEM_DATA *)
ListItem->Data)->sName.c_str());
}

What do you have the ViewStyle and RowSelect properties set to?


Gambit
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Roger
Guest
PostPosted: Thu Mar 29, 2007 2:54 am    Post subject: Re: ListView->GetItemAt is NULL Reply with quote
Quote:
What do you have the ViewStyle and RowSelect properties set to?


Gambit

Thanks Remy, it was the RowSelect that I'd overlooked.


Roger
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