PageControl 怎么打开tabsheet

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用的是rz的控件 关闭后怎么打开

unit Unit1;

interface

uses
Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
Dialogs, RzTabs, ExtCtrls, RzPanel, RzButton, RzSplit, StdCtrls;

type
TForm1 = class(TForm)
RzSplitter1: TRzSplitter;
RzPanel1: TRzPanel;
RzPageControl1: TRzPageControl;
TabSheet1: TRzTabSheet;
TabSheet2: TRzTabSheet;
TabSheet3: TRzTabSheet;
TabSheet4: TRzTabSheet;
TabSheet5: TRzTabSheet;
TabSheet6: TRzTabSheet;
RzButton1: TRzButton;
RzButton2: TRzButton;
RzButton3: TRzButton;
RzButton4: TRzButton;
RzButton5: TRzButton;
RzButton6: TRzButton;
TabSheet7: TRzTabSheet;
Label1: TLabel;
procedure RzButton6Click(Sender: TObject);
procedure RzButton5Click(Sender: TObject);
procedure RzButton4Click(Sender: TObject);
procedure RzButton3Click(Sender: TObject);
procedure RzButton2Click(Sender: TObject);
procedure RzButton1Click(Sender: TObject);
procedure RzPageControl1Close(Sender: TObject;
var AllowClose: Boolean);
private
{ Private declarations }
public
{ Public declarations }
end;

var
Form1: TForm1;

implementation

{$R *.dfm}

procedure TForm1.RzButton6Click(Sender: TObject);
begin
RzPageControl1.ActivePageIndex:=0;
//TabSheet1.TabVisible:=true;
end;

procedure TForm1.RzButton5Click(Sender: TObject);
begin
RzPageControl1.ActivePageIndex:=1;
TabSheet2.TabVisible:=true;
end;

procedure TForm1.RzButton4Click(Sender: TObject);
begin
RzPageControl1.ActivePageIndex:=2;
TabSheet3.TabVisible:=true;
end;

procedure TForm1.RzButton3Click(Sender: TObject);
begin
RzPageControl1.ActivePageIndex:=3;
TabSheet4.TabVisible:=true;
end;

procedure TForm1.RzButton2Click(Sender: TObject);
begin
RzPageControl1.ActivePageIndex:=4;
TabSheet5.TabVisible:=true;
end;

procedure TForm1.RzButton1Click(Sender: TObject);
begin
RzPageControl1.ActivePageIndex:=5;
TabSheet6.TabVisible:=true;
//TabSheet6.

end;

procedure TForm1.RzPageControl1Close(Sender: TObject;
var AllowClose: Boolean);
begin
AllowClose:=True;

end;

end.


用的是rzpagecontrol的showclosebuttononactivetab属性

怎么么实现关闭打开

关闭在标签的×符号关闭

打开在按钮打开 求大神支招!!!!!
之前用的是隐藏但是有一些小问题
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