Function GetLinkCost(Link: integer): single;
Same as GetNodeCost, just for links instead.
TurnMode=false:
Returns the maximum cost of the two end nodes of the link.
TurnMode=true:
Link>0: Returns the cost of going to the ToNode
Link<0: Returns the cost of going to the FromNode
Possible error codes: -10 -30
ActiveX / VCL / CLX component: RWcalc