To close forms uniformly, treat the system menu’s Close command and your File menu’s Exit command in the same manner. In your Exit command, simply unload the form. Let the form’s QueryUnload event handler see if it is safe to exit. If not, cancel the Exit by setting Cancel to True:
Private Sub mnuFileExit_Click() Unload MeEnd SubPrivate Sub Form_QueryUnload(Cancel _ As Integer, UnloadMode As Integer) Cancel = (MsgBox("Are you sure you " & _ "want to exit?", vbYesNo) = vbNo)End Sub