Top Left Visible Cell Property
Short Name: TopLeft
Installed With: Full Development System
Class: TreeControl Properties
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.
| Available in Run-Time Engine and Real-Time Operating System | Yes |
| Permissions | Read/Write |
| Settable when the VI is running | Yes |
| Loads the front panel into memory | No |
| Need to authenticate before use | No |
| Loads the block diagram into memory | No |
| Remote access disallowed | No |
| Must wait until user interface is idle | No |
| Available with control VIs | No |
| Available with global VIs | No |
| Available with strict type definitions | No |
| Available with polymorphic VIs | No |