direction-of-increase

Arguments: scroll-bar-mixin

Returns the value of the direction-of-increase property of the argument. The value of this property can be :up or :down. It indicates the direction a vertical scroll bar bubble or trackbar pointer moves when the value of the scroll-bar/trackbar increases. :up and :down are also used for horizontal scroll bars, with :up meaning to the left and :down meaning to the right.

direction-of-increase is a property of the trackbar, horizontal-scroll-bar, and vertical-scroll-bar classes.

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Created 2019.8.20.