WIDGET_API void       XPDrawTrack(
                         int                  inX1,    
                         int                  inY1,    
                         int                  inX2,    
                         int                  inY2,    
                         int                  inMin,    
                         int                  inMax,    
                         int                  inValue,    
                         XPTrackStyle         inTrackStyle,    
                         int                  inLit);    

This routine draws a track. You pass in the track dimensions and size; the track picks the optimal orientation for these dimensions. Pass in the track’s minimum current and maximum values; the indicator will be positioned appropriately. You can also specify whether the track is lit or not.