The thumb image currently being used to render the slider.
- iOS 2.0+
- Mac Catalyst 13.0+
Sliders can have different thumb images for different control states. The active control state determines which thumb image is stored in this property. To get the thumb image for a different control state, use the
If no custom thumb images have been set using the
set method, this property is
nil. In that situation, the slider uses the default thumb image for drawing.