> r := SendMessage(Listbox1.Handle, LB_GETITEMDATA, 100, 0);
> if GetLastError <> 0 then
> RaiseLastOSError;
>
> if r = -1 then
> ShowMessage('oops');
>
>
> Will yield only the "oops" message, no OS error.
Tested this code too. I get a system error, "invalid index".
How odd.
Cheers,
Karl
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