Fires when a bar's visibility is changed.
public event BarVisibleChangedEventHandler VisibleChanged
Public Event VisibleChanged As BarVisibleChangedEventHandler
The VisibleChanged event's data class is DevExpress.Xpf.Bars.BarVisibileChangedEventArgs.
A bar's visibility is specified by the inherited BarItemLinkHolderBase.Visible property.
Changing a bar's visibility by an end-user is controlled by the Bar.AllowHide property.