Using Programming Languages other than VBA

Private Sub AcadDocument_LispCancelled()
	' This example intercepts a drawing LispCancelled event.
	'
	' This event is triggered when the evaluation of a LISP expression is cancelled.
	'
	' To trigger this example event: Run a LISP expression and
	' cancel the LISP evaluation before it finishes

	MsgBox "A LISP evaluation was just cancelled."
End Sub