Returns a Workbook object that represents the workbook in the active window (the window on top). Returns Nothing if there are no windows open or if either the Info window or the Clipboard window is the active window. Read-only.
The document in the active Protected View window cannot be accessed by using this property. Instead, use the Workbook property of the ProtectedViewWindow object.
expression A variable that represents an Application object.
This example displays the name of the active workbook.
MsgBox "The name of the active workbook is " & ActiveWorkbook.Name
This example displays the path of the active workbook.
MsgBox "The path of the active workbook is " & ActiveWorkbook.path