'Declaration Public Class HiddenMdiTabsCollection Inherits MdiTabsBaseCollection
public class HiddenMdiTabsCollection : MdiTabsBaseCollection
The HiddenMdiTabsCollection is a collection of MdiTab objects whose associated Form is not visible. When an MdiTab is hidden or if it is not visible when it is made into an mdi child form, it will be added to the UltraTabbedMdiManager.HiddenTabs collection of the UltraTabbedMdiManager. When the associated MdiTab.Form is displayed, the tab is moved from the HiddenTabs to an MdiTabGroup and the UltraTabbedMdiManager.TabDisplaying and UltraTabbedMdiManager.TabDisplayed events are invoked. MdiTab objects in the collection will not be associated with a particular MdiTabGroup and therefore return null (Nothing in VB) for the MdiTab.TabGroup property.
Each MdiTab object in the collection may be accessed using either the index or Key.
Target Platforms: Windows 10, Windows 8.1, Windows 8, Windows 7, Windows Server 2012, Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2