Occurs before the workbook (or anything in it) is printed.
Private Sub Workbook_BeforePrint(Cancel As Boolean)
Cancel False when the event occurs. If the event procedure sets this argument to True, the workbook isn't printed when the procedure is finished.
Example
This example recalculates all worksheets in the active workbook before printing anything.
Private Sub Workbook_BeforePrint(Cancel As Boolean)
For Each wk in Worksheets
wk.Calculate
Next
End Sub