unit FlowUnit;

interface

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

type
  TFlowForm = class(TForm)
    TreeView1: TTreeView;
    StatusBar1: TStatusBar;
    Button1: TButton;
    procedure Button1Click(Sender: TObject);
    procedure FormShow(Sender: TObject);
  private
    { Private declarations }
  public
    { Public declarations }
  end;

var
  FlowForm: TFlowForm;

implementation

{$R *.dfm}

procedure TFlowForm.Button1Click(Sender: TObject);
begin
TreeView1.FullExpand;
end;

procedure TFlowForm.FormShow(Sender: TObject);
begin
 TreeView1.FullCollapse;
end;

end.