Gets or sets the area of the tabbed Document header's width.
An Int32 value that is the area of the tabbed Document header's width.
Document headers can be presented either as Windows 10-like tiles or as traditional tabs depending on the ITabbedGroupDefaultProperties.HeaderStyle property. For tabbed Document headers, you can specify the TabWidth property. Note that this property does not manage the width of tabs themselves, but the width of the tabbed headers area instead. In turn, the tabs width depends on the content length. The following figure illustrates a TabbedGroup with the TabWidth property set to 550 pixels.