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unit FileExec;

interface

uses
  Winapi.Windows, Winapi.Messages, System.SysUtils, System.Variants, System.Classes, Vcl.Graphics,
  Vcl.Controls, Vcl.Forms, Vcl.Dialogs, Vcl.StdCtrls;

type
  TForm6 = class(TForm)
    edt1: TEdit;
    edt2: TEdit;
    edt3: TEdit;
    edt4: TEdit;
    btn1: TButton;
    procedure btn1Click(Sender: TObject);
  private
    { Private declarations }
  public
    { Public declarations }
  end;

var
  Form6: TForm6;

implementation

{$R *.dfm}

procedure TForm6.btn1Click(Sender: TObject);
begin
edt1.Text := ExpandFileName(ParamStr(0));
edt2.Text := ExtractFileDir(ParamStr(0));
edt3.Text := Application.ExeName;
edt4.Text := ExtractFileName(Application.ExeName);
end;

end.