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Article #9411

Re: Problem with a sorted combobox

#9411
From: Zlika
Date: Sun, 11 Jul 2004 06:58
45 lines
2450 bytes
Thank you very much. It works now using CB_SETITEMDATA and CB_GETITEMDATA.

"Remy Lebeau (TeamB)" <gambit47.no.spam@no.spam.yahoo.com> a οΏ½crit dans le
message de news:40f04255@newsgroups.borland.com...
>
> "Zlika" <zlika_eseSTOPSPAM@hotmail.com> wrote in message
> news:40f03f38$1@newsgroups.borland.com...
>
> > I have a problem with the TComboBox component.
> > I've got a sorted ComboBox. To know which item is selected (because the
> > combobox is sorted), I first assign each item a ID through the Perform
> > method:
>
> Why do you need an ID to know which item is selected?  The ItemIndex
> property already tells you exactly which item is selected.  What exactly
are
> you trying to accomplish by assigning IDs manually?
>
> >   ComboBox->Perform(LB_SETITEMDATA,pos,i);
>
> You are sending a ListBox message to a ComboBox.  That will not work.  You
> should be using CB_SETITEMDATA instead of LB_SETITEMDATA.  Or, just use
the
> Objects[] property instead and let the component handle the messages for
you
> internally:
>
>     ComboBox->Items->Objects[pos] = reinterpret_cast<void*>(i);
>
> > number = ComboBox->Perform(LB_GETITEMDATA,ComboBox->ItemIndex,0);
>
> Likewise, use CB_GETITEMDATA instead of LB_GETITEMDATA.  Or else use the
> Objects[] property:
>
>     number =
> reinterpret_cast<int>(ComboBox->Items->Objects[ComboBox->ItemIndex]);
>
> > However, this last command always return 0!
>
> That is because you are using the wrong messages to begin with.
>
>
> Gambit
>
>
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From: "Zlika" <zlika_eseSTOPSPAM@hotmail.com>
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Subject: Re: Problem with a sorted combobox
Date: Sun, 11 Jul 2004 08:58:29 +0200
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