Adds a new MDI tab to the hidden tab collection. NOTE: A MDI tab cannot be added directly to the collection. A MDI tab is created and added to the collection by the MDI tabbed manager when a MDI tabbed window (a Form derived from MdiTabForm) is created but not made visible or an existing MDI tabbed window is made not visible.

'Declaration
 
Public Sub Add( _
   ByVal item As MdiTab _
) 

'Usage
 
Dim instance As HiddenMdiTabCollection
Dim item As MdiTab
 
instance.Add(item)

public void Add( 
   MdiTab item
)