/// <summary>
/// Retrieves the range of a child object.
/// </summary>
/// <param name="childElement">The child element. If the element is not
/// a child of the text container then an InvalidOperation exception is
/// thrown.</param>
/// <returns>A range that spans the child element.</returns>
public TextPatternRange RangeFromChild(AutomationElement childElement)
{
if (childElement == null)
{
throw new ArgumentNullException("childElement");
}
SafeTextRangeHandle hTextRange = UiaCoreApi.TextPattern_RangeFromChild(_hPattern, childElement.RawNode);
return(TextPatternRange.Wrap(hTextRange, this));
}
