controlling listbox portion of combo box

Anyone know of any way to affect the listbox portion of a combo box?  Specifically, the width (to make it wider than edit portion) and owner draw (to do columns).
meechAsked:
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ronit051397Commented:
In general, if you want to do 'extra' actions on a combobox you
can send messages, using messages begin with CB_...
To make the drop down width equel to 300, write this:

procedure TForm1.ComboBox1DropDown(Sender: TObject);
begin
sendmessage(combobox1.handle, CB_SETDROPPEDWIDTH ,300,0);
end;

As for setting columns. I don't have an answer for that.
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