BarHeaderItem is a bar item that can be added to a PopupMenu or BarSubItem (sub-menu) to give a caption to a set of items that follow this BarHeaderItem.
The items that follow the BarHeaderItem in the PopupMenu/BarSubItem are arranged in one column by default. You can arrange them in multiple columns by setting the MultiColumn property to True. Multi-column mode settings (including the number of columns and item text visibility) can be customized using the OptionsMultiColumn property.
To enable multi-column mode for all items in the PopupMenu and BarSubItem, use the PopupMenu.MultiColumn and BarLinkContainerItem.MultiColumn inherited property, respectively.
If the BarHeaderItem.MultiColumn property is set to Default, the multi-column mode availability is specified by the MultiColumn property of the item's owner menu.
It is possible to customize multi-column mode settings in a centralized way, using these properties:
See Bar Item Links to learn more.
System.Object
System.MarshalByRefObject
System.ComponentModel.Component
BarItem
BarStaticItem
BarHeaderItem