If MsgBox("Close?", vbYesNo) = vbYes Then
Exit Sub
Else
Cancel = True
End If
Sub OnFormCancel
Dim bResult
bResult = Application.MessageBox ("Are you sure you want to cancel?", apYesNo, "Cancel?")
If bResult = apNo Then
ThisEvent.Result = False
End If
If bResult = apYes Then
ThisEvent.Result = True
End If
End Sub