Parameters
- dc
- a
PointF
in document coordinates
Return Value
an IGoPort, or null if none was found at dc, or null if the object found is a child of the Link. The latter case is to avoid picking any port that is part of the link, such as when the link is a GoLabeledLink and the GoLabeledLink.FromLabel or the GoLabeledLink.ToLabel is a port or contains one.