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Delphi

public
  function IndexOfEdgeTo( ANode: TGGraphNode ): Integer;
 

The following code uses the IndexOfEdgeTo method to determine what nodes point to ANode:

Delphi

begin
   with Graph.GetNodes do
     while HasMoreElements do
       if TGGraphNode(NextElement).IndexOfEdgeTo( ANode ) > -1 then
         ListBox1.Items.Add( TGGraphNode(CurrentElement).Caption + ' points to ' + ANode.Caption );
 end; 

Reference

•GGraph.TGGraphNode.IndexOfEdge(TGGraphEdge)

•GGraph.TGGraphNode.Edge[Integer]

•GGraph.TGGraphNode.EdgeCount

•GGraph.TGGraphEdge

•TGGraphNode

•GGraph