TreeControl class/Top Left Visible Cell property

VI Server Property Information
Property ID	756A3C09
Scope	Basic Development Environment
Data Name	TopLeft
Short Name*	TopLeft
Long Name*	Top Left Visible Cell
* Displayed here in English. Short and Long names appear in the language of the LabVIEW IDE.
Owning Class ID	66
Owning Class Name	TreeControl Class
Data Type	Common Cluster TypeDef data type
Property Node
Available in Real-Time Operating System	Yes
Available in Run-Time Engine	Yes
Loads the block diagram into memory	No
Loads the front panel into memory	No
Need to authenticate before use	No
Permissions	Read/Write
Remote access allowed	Yes
Settable when the VI is running	Yes

The unique tag and column of the item string displayed in the top left corner of the tree control. Use this property to read or change the top item, or use it to read or change the leftmost column of information displayed.

If you wire a tag of TREE_COLUMN_HEADERS or TREE_ALL_ROWS or a column of -2 to this property, the property returns an error. If the tree control contains no items, this property returns an error.

This property returns the tag and column of the item string at the top left corner of the visible tree window, which is not necessarily the top left element of the tree. To access the top left element, wire a value of 0 to the Active Cell:Active Column Number property and to the Active Item:Row Number property.

Elements

Name	Description
Node	The value that appears in the top left corner of the tree control.
Column	The index of the leftmost column of information displayed in the tree control.

History

Version	Change(s)
	More info to come.