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  1.   

    unit Unit1;interfaceuses
      Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
      Dialogs, ComCtrls, Menus;type
      TForm1 = class(TForm)
        ListView1: TListView;
        PopupMenu1: TPopupMenu;
        aa1: TMenuItem;
        bb1: TMenuItem;
        procedure PopupMenu1Popup(Sender: TObject);
      private
        { Private declarations }
      public
        { Public declarations }
      end;var
      Form1: TForm1;implementation{$R *.dfm}procedure TForm1.PopupMenu1Popup(Sender: TObject);
    begin
      ListView1.ItemIndex:=-1;
    end;end.