Summary
This method returns Nth accessible child using zero-based index.
nsIAccessible getChildAt( in long aChildIndex );
Parameters
- aChildIndex
- [in] The index of the Nth child.
Return value
Returns Nth accessible child using zero-based index. If child index is less than zero then returns last child. If child index is greater than children count then returns null.
Exceptions thrown
- NS_ERROR_FAILURE
- Indicates that the accessible is unattached from the accessible tree.