UIControlled Application Class

System Object
Autodesk.Revit.UI UIControlledApplication

	Name	Description
	ActiveAddInId	Get current active external application or external command id.
	ControlledApplication	Returns the database level ControlledApplication represented by this UI-level ControlledApplication.
	IsLateAddinLoading	Indicates whether this add-in is loaded on the fly or not. If it is loaded when Revit is starting up, it is false, otherwise it should be true.
	IsViewerModeActive	Determines if Revit session is in Viewer mode.
	LoadedApplications	Returns an array of successfully loaded external applications.
	MainWindowHandle	Get the handle of the Revit main window.
	ProductIsRS	Identifies if the current Revit product has an RS designation. Most add-ins will not need to use this information.

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	Name	Description
	CreateAddInCommandBinding	Creates a new AddInCommandBinding.
	CreateRibbonPanel(String)	Create a new RibbonPanel on the Add-Ins tab.
	CreateRibbonPanel(String, String)	Create a new RibbonPanel on the specified tab.
	CreateRibbonPanel(Tab, String)	Create a new RibbonPanel on the designated standard Revit tab.
	CreateRibbonTab	Creates a new tab on the Revit user interface.
	Equals	Determines whether the specified object is equal to the current object. (Inherited from Object )
	GetDockablePane	Gets a DockablePane object by its ID.
	GetHashCode	Serves as the default hash function. (Inherited from Object )
	GetRibbonPanels	Get all the custom Panels on Add-Ins tab of Revit.
	GetRibbonPanels(String)	Get all the custom Panels on a designated Revit tab.
	GetRibbonPanels(Tab)	Get all the custom Panels on a designated standard Revit tab.
	GetType	Gets the Type of the current instance. (Inherited from Object )
	LoadAddIn	Loads add-ins from the given manifest file.
	LoadPackageContents	Loads add-ins from the given packageContents.xml file.
	RegisterContextMenu	Adds a new context menu creator.
	RegisterDockablePane	Adds a new dockable pane to the Revit user interface.
	RemoveAddInCommandBinding	Removes an AddInCommandBinding.
	ToString	Returns a string that represents the current object. (Inherited from Object )

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	Name	Description
	ApplicationClosing	Subscribe to the ApplicationClosing event to be notified when the Revit application is just about to be closed.
	DialogBoxShowing	Subscribe to the DialogBoxShowing event to be notified when Revit is just about to show a dialog box or a message box.
	DisplayingOptionsDialog	Subscribe to the options dialog displaying event to be notified when Revit options dialog is displaying.
	DockableFrameFocusChanged	Subscribe to this event to be notified when a Revit GenericDockableFrame has gained focus or lost focus in the Revit user interface. This event is called only for API-created GenericDockableFrames.
	DockableFrameVisibilityChanged	Subscribe to this event to be notified when a Revit GenericDockableFrame has been shown or hidden in the Revit user interface. This event is called only for API-created GenericDockableFrames.
	FabricationPartBrowserChanged	Subscribe to MEP Fabrication part browser changed event to be notified when MEP Fabrication part browser is updated.
	FormulaEditing	Subscribe to the FormulaEditing event to be notified when the edit formula button has been clicked.
	Idling	Subscribe to the Idling event to be notified when Revit is not in an active tool or transaction.
	SelectionChanged	Subscribe to the SelectionChanged event to be notified after the selection was changed.
	ThemeChanged	Subscribe to the ThemeChanged event to be notified after the theme was changed.
	TransferredProjectStandards	Subscribe to the TransferredProjectStandards event to be notified after the scope of a Transfer Project Standards operation has been finalized.
	TransferringProjectStandards	Subscribe to the TransferringProjectStandards event to be notified before the scope of an impending Transfer Project Standards operation has been finalized in the Transfer Project Standards dialog.
	ViewActivated	Subscribe to the ViewActivated event to be notified immediately after Revit has finished activating a view of a document.
	ViewActivating	Subscribe to the ViewActivating event to be notified when Revit is just about to activate a view of a document.

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This class does not provide access to documents because it is provided to you through the ExternalApplication OnStartup()/OnShutdown() methods, and those methods are when it is not possible to work with Revit documents. You can work with documents by getting them from the UIApplication class; that class is obtained from events and ExternalCommand callbacks.

Reference