title: How to get the text of all checked nodes in Treeview in delphi
body: <p>this is the implementation for the treeview to have a check boxes in every nodes.</p>
  
  <pre><code>procedure TTreeView.CreateParams(var Params: TCreateParams);  
  begin
  inherited;
      Params.Style := Params.Style or TVS_CHECKBOXES;
  end;
  </code></pre>
  
  <p>now, i want to get all the text of all checked nodes in treeview and append it in memo</p>