A mouse move event has occurred. See if we should start autoscrolling. If the move position is outside of the client area, initiate autoscrolling. Otherwise, we've moved back into the widget so end autoscrolling.
See Implementation
A mouse move event has occurred. See if we should start autoscrolling. If the move position is outside of the client area, initiate autoscrolling. Otherwise, we've moved back into the widget so end autoscrolling.