TreeOptions

TreeOptions property

Applies to

acTreeComboBox component.

Declaration

type

TacTreeViewOptions = class

published

property AutoExpand: Boolean default False;

property ExpandTopLevelNodes: Boolean default False;

property FullExpand: Boolean default False;

property MouseTrack: Boolean default True;

property RowSelect: Boolean default False;

property ShowButtons: Boolean default True;

property ShowLines: Boolean default True;

property ShowRoot: Boolean default True;

property Tooltips: Boolean default True;

end;

property TreeOptions: TacTreeViewOptions;

Description

The TreeOptions structure used to specify some behaviours of the TreeView embedded to drop-down window of acTreeComboBox control.

There are possible properties of embedded TreeView control:

Property

Purpose

AutoExpand

Specifies whether the nodes in the tree view automatically expand and collapse depending on the selection;

ExpandTopLevelNodes

Specifies whether the TreeComboBox should automatically expand all the top-level nodes (nodes without parent), upon DropDown (

alternativaly you can just expand the nodes in OnDropDown event handler).

FullExpand

Specifies whether the component should automatically expand all the nodes and their sub-nodes upon DropDown (

alternativaly you can just expand nodes in OnDropDown event handler);

MouseTrack

Specifies whether the selection should always hovers the tree node under mouse pointer, even when user move mouse over tree view without clicking;

RowSelect

Specifies whether the entire row of the selected item is highlighted;

ShowButtons

Specifies whether to display plus (+) and minus (-) buttons to the left side of each parent item;

ShowLines

Specifies whether to display the lines that link child nodes to their corresponding parent nodes;

ShowRoot

Specifies whether lines connecting top-level nodes are displayed;

Tooltips

Specifies whether the items in the tree view have tooltips.

See also