How to receive (like Event ) when moving Control Point on Polycurve

Scripting
1

I want to know How to receive (like Event ) when moving (or moved ) Control Point on Polycurve .

and get information which Curve index and Control Point index is moving. (or moved )

In this Event, I want to move another control points when user move some control points .

It’s OK only done in a new command.

Hopefully, In Python.

2

Hi @k.saegusa,

Rhino does not trigger any events when moving control points. I’m sure performance had a lot to do with this.

Why do you need this? What are you trying to do and why?

– Dale

3

Hi dale,
I want to move another control point to be G1 in Polycurve.
if my former question seems not to be possible, could I receive the events or callbacks when start/end of curve edit ?

or , Could I wrap “control point edit curve state” in a command that I create in python?

Thank you .