How to: Configure Highlighting and Selection
To specify end-user permissions, use the TreeMapControl.SelectionMode and TreeMapControl.EnableHighlighting properties.
<dxtm:TreeMapControl Grid.Column="0"
EnableHighlighting="{Binding ElementName=chkHighlighting, Path=IsChecked}"
SelectionMode="{Binding ElementName=cbSelectionMode, Path=SelectedValue}">
</dxtm:TreeMapControl>