unit Unit1;interfaceuses  Winapi.Windows, Winapi.Messages, System.SysUtils, System.Variants, System.Classes, Vcl.Graphics,  Vcl.Controls, Vcl.Forms, Vcl.Dialogs, Vcl.StdCtrls, Vcl.ComCtrls;type  TForm1 = class(TForm)    tbc1: TTabControl;    btn1: TButton;    btn2: TButton;    btn3: TButton;    procedure btn3Click(Sender: TObject);    procedure btn2Click(Sender: TObject);    procedure btn1Click(Sender: TObject);  private    {
     Private declarations }  public    {
     Public declarations }  end;var  Form1: TForm1;implementation{
    $R *.dfm}procedure TForm1.btn3Click(Sender: TObject);begin  tbc1.Tabs.Insert(2,'插入Tab');end;procedure TForm1.btn1Click(Sender: TObject);begin  tbc1.Tabs.Delete(1);end;procedure TForm1.btn2Click(Sender: TObject);begin  tbc1.Tabs.Add('新增Tab');end;end.