WorkbookBeforeSave Event Example
This example prompts the user for a yes or no response before saving any workbook.
Private Sub App_WorkbookBeforeSave(ByVal Wb As Workbook, _
ByVal SaveAsUI As Boolean, Cancel as Boolean)
a = MsgBox("Do you really want to save the workbook?", vbYesNo)
If a = vbNo Then Cancel = True
End Sub