How to make TGraph line immobile while keeping markers editable

I am developing a GUI application and I would like to give users the freedom to edit points on a TGraph. While it is doable, if I click on the line rather than the marker by mistake, the entire line moves and i don’t want that. Is there a way to make the line immobile while keeping the markers mobile.

thanks in advance

ROOT Version: 6.12/06
Platform, compiler: linuxx8664gcc, gcc 7.3.1

This is done in TGraph:ExecuteEvent. You would need to change this method in order to deactivate the graph move.

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