Returns whether the indicated segment is enabled.
- iOS 2.0+
- Mac Catalyst 13.0+
- tvOS 9.0+
An index number identifying a segment in the control. It must be a number between 0 and the number of segments (
number) minus 1; values exceeding this upper range are pinned to it.
YES if the given segment is enabled and
NO if the segment is disabled. By default, segments are enabled.