[Overview][Constants][Types][Classes][Procedures and functions][Index] | Reference for unit 'ComCtrls' (#lcl)

# TCustomTreeView.MultiSelectStyle

Multi-selection options enabled for the tree view control.

## Declaration

Source position: comctrls.pp line 3774

`public property TCustomTreeView.MultiSelectStyle : TMultiSelectStyle read FMultiSelectStyle write SetMultiSelectStyle default DefaultMultiSelectStyle;`

## Description

MultiSelectStyle is a TMultiSelectStyle property which contains multi-selection options enabled for the tree view control. Values in the set type determine which nodes are available to be multi-selected, and the keys used to select them. The default value for the property is defined in the DefaultMultiSelectStyle constant, and enables use of the Ctrl key to add a tree node to a multi-selection.

See TMultiSelectStyles for the available values and their meanings.

Changing the value in MultiSelectStyle causes the new property value to be validated. If an empty set ([]) is assigned, the default value in DefaultMultiSelectStyle is used instead. There must be at least one TMultiSelectStyles enumeration value in the set type.

Use the Options property to enabled multi-selection by including the value tvoAllowMultiselect.

Values in MultiSelectStyle are used when the MouseDown method handles a click on the text or icon for a tree node.

## See also

TCustomTreeView.MouseDown |  | Handles mouse down events for the tree view control.
TCustomTreeView.Items |  | The container with the TTreeNode instances for the control.
TCustomTreeView.Options |  | The set of options enabled in the tree view control.
TTreeNodes.MultiSelect |  | Adds nodes relative the specified node to the multi-selection list.
TMultiSelectStyles |  | Represents available multi-select styles.
TMultiSelectStyle |  | Set type used to store value(s) from TMultiSelectStyles.