Gets or sets an unusable dimension to be compensated for. This should be set
to the size of the other scroll bar in the DiagramScrollViewer.
Namespace:
Mindscape.WpfDiagramming.FoundationAssembly: Mindscape.WpfDiagramming.Foundation (in Mindscape.WpfDiagramming.Foundation.dll)
Version: 2.0.0.0 (2.0.0.0)