The PolyLines Delphi library provide vector lines that can be edited during runtime.

TPolyLines is a non-visual class, derived from TObject.
It controls and manages all the lines (TPolyLine)
The lines can be drawn on all wincontrols (TWinControl)

The basic functionality:
- Left click to select a line, then drag the line or a linenode.
- Right click a selected line to insert a linenode.
- Right click a linenode to delete it.