Question How can I react to Edge Release Events in GraphView?

I wanted to implement the same behaviour as in ShaderGraph where when you release an edge over the Background you get a SearchWindow to create a new node from.
How can I either check whether i am currently dragging an Edge or subscribe to an Event that allows me to react to an Edge Release? The GraphView API is really nice but still not documented enough for me to find the answer myself.

 

I'm looking for a way to do the same thing
please post here if you found a solution

 

Sry for the late reply. In this thread somebody posted a working solution for me:
https://forum.unity.com/threads/exp...dow-when-edge-dropped-outside-a-port.1147733/