Class Hierarchy
Fl_Valuator
   |
   +----Fl_Roller
Include Files
#include <FL/Fl_Roller.H>
Description
 The Fl_Roller widget is a "dolly" control commonly used to
move 3D objects.

Methods
 Creates a new Fl_Roller widget using the given position,
size, and label string. The default boxtype is FL_NO_BOX.
 Destroys the valuator.