Defining Chart Event

 
Hello Developers.

we can easily define an event of dragging and dropping an object in the chart with CHARTEVENT_OBJECT_DRAG.
It happens when we drop the object, but how can we define an event of just dragging an object which activates when we move an object (before dropping it)???
 
CHARTEVENT_OBJECT_CLICK with CHARTEVENT_MOUSE_MOVE
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