unit main;

interface

uses
  Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
  Dialogs, StdCtrls;

type
  TForm1 = class(TForm)
    ListBox1: TListBox;
    procedure FormCreate(Sender: TObject);
    procedure FillFields();
  private
    { Private declarations }
  public
    { Public declarations }
  end;

var
  Form1: TForm1;

implementation
uses data;
{$R *.dfm}

procedure TForm1.FormCreate(Sender: TObject);
begin
   FillFields;
end;

procedure TForm1.FillFields;
var
   i:integer;
   begin
     DataModule1.ADOQuery1.Active:=true;
      ListBox1.Items.Clear;
      for i:=0 to DataModule1.ADOQuery1.FieldCount-1 do
      begin
         ListBox1.Items.Add(DataModule1.ADOQuery1.Fields[i].FieldName);
      end;
      //确保LISTBOX中选项被选中
      ListBox1.Selected[0]:=true;
   end;

end.