Top Left Visible Cell Property

LabVIEW 2018 Help


Edition Date: March 2018
Part Number: 371361R-01
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Short Name: TopLeft

Requires: Base Development System

Class: TreeControl Properties

To Use: Create a property.

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.

Remarks

The following table lists the characteristics of this property.

Data type
PermissionsRead/Write
Available in Run-Time EngineYes
Available in Real-Time Operating SystemYes
Settable when the VI is runningYes
Loads the front panel into memoryNo
Need to authenticate before useNo
Loads the block diagram into memoryNo
Remote access allowedYes

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