tr>
      </table>
</div><div class="memdoc">

<p>Setups extended button or split-button. </p>
<p >Extended button texts are reset to empty values after every dialog.</p>
<dl class="params"><dt>Parameters</dt><dd>
  <table class="params">
    <tr><td class="paramname">index</td><td>A value from 0 to 3. 0 = leftmost button ... 3 = rightmost button </td></tr>
    <tr><td class="paramname">text</td><td>Button text </td></tr>
    <tr><td class="paramname">subItems</td><td>If specified a Split Button is created.