ProjectTree (IProjectTree66)

The IProjectTree66 interface allows you to manipulate the Project Tree items. This includes managing groups, items and layers. A Tree item is a group if it can have children items. It is important to note that items that are not groups can only be added through the ICreator66 interface, since it is used to create all the entities of TerraExplorer. These entities (i.e., a polyline on the terrain) are then represented in the Project Tree (as items inside groups). To rename an item in the Project Tree that is not a group, you should use the interface of that item. If you need to access a Project Tree element (for example, to change its position on the terrain) you use its ID that uniquely identifies it in the TerraExplorer Pro world (the ITerraExplorerObject66. ID property) to get an interface to that object using the GetObject method.

Note: From API version 6.5 and above, elements no longer have an additional separate Project Tree ID; they only have a single object ID.

	Properties
	HiddenGroupID	Gets the ID of the hidden group tree element.
	HiddenGroupName	Gets the name of the hidden group tree element.
	NotInTreeID	Gets the ID that should be passed as an element’s ParentGroupID, if you do not want the element added to the Project Tree.
	RootID	Gets the ID of the Tree root element.
	Methods
	CreateGroup	Creates a group in the Project Tree.
	CreateLockedGroup	Creates a group in a “locked” (collapsed) mode. When locked, TerraExplorer Viewer users cannot expand the group to view its contents.
	DeleteItem	Deletes an item from the Project Tree (and from the terrain, if that item was a terrain object).
	EditItem	Opens the property sheet to edit a specified item.
	EditItems	Opens the Multi Edit property sheet to edit multiple specified items.
	EnableRedraw	Enables changes to be redrawn or prevents them from being redrawn in the Project Tree.
	EndEdit	Terminates the edit item mode.
	ExpandGroup	Expands the specified group so that it displays all of its children, or collapses it.
	FindItem	Finds an item using a path to that item.
	GetActivationCode	Returns the activation code assigned for the specified group.
	GetClientData	Returns the text string describing the group’s attribute data. This information is available for general use in your application.
	GetGroupEndTime	Returns the specified group’s end date and time.
	GetGroupLocation	Returns the location of the specified group.
	GetGroupStartTime	Returns the specified group’s start date and time.
	GetItemName	Returns the name of a specific item using its ID.
	GetLayer	Returns an interface to the IFeatureLayer66 object based on the specified group ID.
	GetNextItem	Retrieves the Project Tree item that has the specified relationship, indicated by the Code parameter, to another item whose ID is specified.
	GetObject	Returns an ITerraExplorerObject interface to an object based on its ID.
	GetVisibility	Returns the visibility status of a Project Tree item on the terrain.
	IsGroup	Determines whether or not a ProjectTree item is a group.
	IsLayer	Obsolete. To determine whether a Project Tree element is a feature layer, use IProjectTree66.GetObject to return an interface to the element and then ITerraExplorerObject66. ObjectType to get the element type.
	IsLocked	Determines whether or not a group is locked.
	LoadFlyLayer	Loads a Fly file into the current project. All the objects from the Fly file, including locations, routes and hyperlinks, are added.
	LockGroup	Sets a group to a “lock” (collapsed) status mode. When a group is locked, users of TerraExplorer Viewer cannot expand the group and view its contents.
	RenameGroup	Renames a group in the Project Tree.
	SaveAsFly	Saves the specified group to a Fly file.
	SaveAsKml	Saves the specified group to a KML file.
	SelectItem	Selects an item in the Project Tree.
	SetActivationCode	Determines the default activation action executed when clicking on the locked group symbol.
	SetClientData	Stores a text string in the group global namespace.
	SetGroupEndTime	Determines the date and time when the group should stop being visible
	SetGroupLocation	Determines the location parameters for a specified group.
	SetGroupStartTime	Determines the date and time when the group should start being visible
	SetParent	Moves an item to a different group.
	SetVisibility	Sets a ProjectTree item to be visible, or not visible, on the terrain.
	ShowSubTree	Reserved
	SortGroup	Sorts the items in the group according to specified sort type.