title: Delphi XE3. TStyleManager.SetStyle works for all forms in application. How set style only on 1 form?
body: <p>I need a form for testing Styles.
  And go apllying each style only in that form. But the TStyleManager.SetStyle applies to all forms in application. How can I do for apply style only in current form?</p>
  
  <pre><code>    procedure TForm1.FormCreate(Sender: TObject);
      var styleName: String;
      begin
        ListBox1.Items.Clear;
        for styleName in TStyleManager.StyleNames do
          ListBox1.Items.Add(styleName);
      end;
  .......
      procedure TForm1.ListBox1Click(Sender: TObject);
      begin // this applies to all forms in application, I want apply only this form!
        TStyleManager.SetStyle(ListBox1.Items[ListBox1.ItemIndex]);
      end;
  </code></pre>