Adjusters

Adjusters are used to adjust some parameter, typically a variable or perhaps the view on a surface. You can attach Observer objects to adjusters which will be notified when the adjuster changes.

hslider(Adjustable*)

returns a horizontal slider

hscroll\_bar(Adjustable*)

returns a horizontal scrollbar

vslider(Adjustable*)

returns a vertical slider

vscroll\_bar(Adjustable*)

returns a vertical scrollbar

panner(Adjustable*,Adjustable*)

returns a 2-dimensional panner