Sent when an accessibility client requests the accessible object
for a child of the control by index or childID, or when a client
requests the index of an accessible object in its parent.
<p>
The childID field in the event object can be one of the following:<ul>
<li>an integer child ID - return the accessible object for the specified child ID,
or null if the specified child does not have its own accessible</li>
<li>{@link ACC#CHILDID_CHILD_AT_INDEX} - return the accessible child object at the specified index,
or null if this object has no children</li>
<li>{@link ACC#CHILDID_CHILD_INDEX} - return the index of this accessible in its parent</li>
</ul></p>
@param e an event object containing the following fields:<ul>
<li>childID IN - an identifier specifying a child of the control, or one of the predefined CHILDID constants</li>
<li>detail [Optional IN] - the index of the child accessible to be returned when childID = CHILDID_CHILD_AT_INDEX</li>
<li>detail [Optional OUT] - the index of this accessible in its parent when childID = CHILDID_CHILD_INDEX</li>
<li>accessible [Optional OUT] - an Accessible for the specified childID or index, or null if one does not exist</li>
</ul>
Sent when an accessibility client requests the accessible object for a child of the control by index or childID, or when a client requests the index of an accessible object in its parent. <p> The childID field in the event object can be one of the following:<ul> <li>an integer child ID - return the accessible object for the specified child ID, or null if the specified child does not have its own accessible</li> <li>{@link ACC#CHILDID_CHILD_AT_INDEX} - return the accessible child object at the specified index, or null if this object has no children</li> <li>{@link ACC#CHILDID_CHILD_INDEX} - return the index of this accessible in its parent</li> </ul></p>
@param e an event object containing the following fields:<ul> <li>childID IN - an identifier specifying a child of the control, or one of the predefined CHILDID constants</li> <li>detail [Optional IN] - the index of the child accessible to be returned when childID = CHILDID_CHILD_AT_INDEX</li> <li>detail [Optional OUT] - the index of this accessible in its parent when childID = CHILDID_CHILD_INDEX</li> <li>accessible [Optional OUT] - an Accessible for the specified childID or index, or null if one does not exist</li> </ul>