<com:TContent ID="Content">

<com:TPanel DefaultButton="button2" Style="border:1px solid #ccc; padding:2em;">

<com:TTextBox ID="text1" />
<com:TButton ID="button1" Text="Button 1" OnClick="button_clicked"/>
<com:TButton ID="button2" Text="Button 2 (default)" OnClick="button_clicked"/>
<com:TButton ID="button3" Text="Button 3" OnClick="button_clicked" />

<com:TLabel ID="label1" Text="Status" />
</com:TPanel>

</com:TContent>