unit1.~pas

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unit Unit1;

interface

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

type
  TForm1 = class(TForm)
    Button1: TButton;
    Button2: TButton;
    procedure Button1Click(Sender: TObject);
    procedure Button2Click(Sender: TObject);
  private
    { Private declarations }
  public
    { Public declarations }
  end;

var
  Form1: TForm1;
  i:hwnd; //先定义一个句柄变量

implementation

{$R *.dfm}

procedure TForm1.Button1Click(Sender: TObject);
begin
i:=findwindow(nil,'我的电脑'); //这句话是捕捉标题为的我的电脑的句柄
showwindow(i,sw_hide);//让标题为我的电脑的窗口隐了 试试看吧  不见了吧
end;

procedure TForm1.Button2Click(Sender: TObject);
begin
showwindow(i,sw_show); //这句是让刚才的窗口还原，显示出来 我关了，变量没有了～再试试吧 OK 了，呵呵
end;

end.