Using Programming Languages other than VBA

Sub Example_Active()
	' This example creates two new drawings and determines
	' which of the drawings is the active drawing.

	Dim NewDrawing1 As AcadDocument
	Dim Newdrawing2 As AcadDocument
	Set NewDrawing1 = ThisDrawing.Application.Documents.Add("")
	Set Newdrawing2 = ThisDrawing.Application.Documents.Add("")

	Dim activeStatus As String
	Dim drawing As AcadDocument
	activeStatus = ""
	For Each drawing In ThisDrawing.Application.Documents
	If drawing.Active Then
			activeStatus = activeStatus & drawing.name & " is active." & vbCrLf
	Else
			activeStatus = activeStatus & drawing.name & " is not active." & vbCrLf
	End If
	Next drawing
	MsgBox activeStatus
End Sub