Determines the default width of items within the toolbar when not explicitly set within the item's default style. When this property is not set and the Item.Style.Width is also not set, the widths of items are automatically determined by the browser to occupy the horizontal width of the toolbar equally for each item. To set the widths of individual items, use the DefaultStyle.Width property setting.
Target Platforms: Windows 10, Windows 8.1, Windows 8, Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2
