Gets or sets the recommended width for an overflow ToolBar before items flow to the next line.
Assembly: PresentationFramework (in PresentationFramework.dll)
If you set ToolBar is 100, and all the items that can fit into an area of that size are in the main ToolBar. If there is only one item, and it requires a size of 120, the toolbar width expands automatically from 100 to 120.to 100, the width of the overflow
Available since 3.0