GnomeDockItem is a container widget that can be used to
make widgets dockable. "Making a widget dockable" means that the
widget gets a handle through which users can drag it around the dock
widget or detach it so that it gets displayed into its own window
(thus becoming a "floating" item).
This enumeration can be used to customize the behavior of a dock item.
Every value represents a property bit, so that the properties can be
combined together by using the OR (`|') operator.
The special value GNOME_DOCK_ITEM_BEH_NORMAL specifies the ``normal''
(default) behavior, and means to have all the properties disabled (and
thus the corresponding bits set to zero).
GNOME_DOCK_ITEM_BEH_EXCLUSIVE specifies that the dock
item is always the only one in its band.
GNOME_DOCK_ITEM_BEH_NEVER_FLOATING specifies that
users cannot detach the dock item from the dock.
GNOME_DOCK_ITEM_BEH_NEVER_VERTICAL specifies that the
dock item must be kept horizontal, and users cannot move it to a
vertical band.
GNOME_DOCK_ITEM_BEH_NEVER_HORIZONTAL specifies that
the dock item must be kept horizontal, and users cannot move it to a
vertical band.
GNOME_DOCK_ITEM_BEH_LOCKED specifies that users cannot
drag the item around.