constants BackModeEnum
The BackModeEnum type specifies the way the control displays the selected nodes. The SelBackMode property specifies the way the control displays the selected nodes. The SingleSel property specifies whether the control supports single or multiple nodes. The BackModeEnum type supports the following values:

NameValueDescription
exOpaque0 The selected node overrides the node's background, like color, pictures, and so on.

exTransparent1 The background of selected node, is shown as semi-transparent on the node's background.