Occurs when the pointer is moving around while still touching the map view while the tool button is pressed.
Use this event to write code that performs the action when a user moves the pointer around on the map view after clicking the tool button.
As this event is being handled, the script can retrieve the current pointer coordinates from the Map object. For example, the current pointer coordinates in the current map projection would be retrieved using Map.PointerX and Map.PointerY.