Sent when an accessibility client requests the range of the current
text selection.
The default behavior is to do nothing.
<p>
Return the selection start offset and non-negative length in the
<code>offset</code> and <code>length</code> fields of the event object.
</p>
@param e an event object containing the following fields:<ul>
<li>childID IN - an identifier specifying a child of the control</li>
<li>offset OUT - the offset of the current text selection</li>
<li>length OUT - the length of the current text selection</li>
</ul>
Sent when an accessibility client requests the range of the current text selection. The default behavior is to do nothing. <p> Return the selection start offset and non-negative length in the <code>offset</code> and <code>length</code> fields of the event object. </p>
@param e an event object containing the following fields:<ul> <li>childID IN - an identifier specifying a child of the control</li> <li>offset OUT - the offset of the current text selection</li> <li>length OUT - the length of the current text selection</li> </ul>