如何用VBA代码为Word添加菜单（即命令栏）？

谢谢这位兄台。可是这个菜单只能增加。却不能删除。如何在关闭WORD时自动删除呢？

Dim myMenuBar
Dim newMenu
Dim ctrl1
Dim s
Dim flag As String

'初始化菜单
Set myMenuBar = CommandBars.ActiveMenuBar
Set newMenu = myMenuBar.Controls.Add(Type:=msoControlPopup, _
Temporary:=True)
newMenu.Caption = "电子印章"
Set ctrl1 = newMenu.Controls.Add(Type:=msoControlButton, ID:=1)
ctrl1.Caption = "添加电子印章"
ctrl1.Style = msoButtonCaption
ctrl1.OnAction = "AddSeal"
Set ctrl1 = newMenu.Controls.Add(Type:=msoControlButton, ID:=1)
ctrl1.Caption = "验证电子印章"
ctrl1.Style = msoButtonCaption
ctrl1.OnAction = "CheckSeal"
ctrl1.Style = msoButtonCaption
Set ctrl1 = newMenu.Controls.Add(Type:=msoControlButton, ID:=1)
ctrl1.Caption = "关于"
ctrl1.OnAction = "About"
ctrl1.Style = msoButtonCaption