delphi ComboBox怎么添加下拉菜单的。。
rt
[解决办法]

unit Unit1;

interface

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

type
  TForm1 = class(TForm)
    ComboBox1: TComboBox;
    Button1: TButton;
    procedure Button1Click(Sender: TObject);
  private
    { Private declarations }
  public
    { Public declarations }
  end;

var
  Form1: TForm1;

implementation

{$R *.dfm}

procedure TForm1.Button1Click(Sender: TObject);
begin
    combobox1.Items.Add('ABC');
    combobox1.Items.Add('cde');
end;

end.

[解决办法]
直接在items属性里添加
[解决办法]
还有一中:

combobox1.Items.CommaText :='ABC,abc';
就添加了 ABC 和 abc 下拉框
[解决办法]
combobox1.Items.CommaText :='AAA,bbb';
添加 AAA 和 bbb 下拉框
[解决办法]
1、直接付值：
combobox1.Items.Add('ABC');
combobox1.Items.Add('cde');
2、如果是要从表中读取来绑定:
ADOQuery1.Close;
ADOQuery1.SQL.Clear;
ADOQuery1.SQL.Add('select id from table order by id');
ADOQuery1.Open;
if ADOQuery1.RecordCount >0 then
begin
ComboBox1.Items.Clear;
ADOQuery1.First;
while not ADOQuery1.Eof do
begin
ComboBox1.Items.Add(ADOQuery1.fieldbyname('id').AsString) ;
ADOQuery1.Next;
end;
end;