|Returns VarioMenuItem object that is the radio
group holder of this radio group member. This property can be used only for radio group
members (items which has mitGroupMember value in Type property).
VarioMenuItem.Group - returns VarioMenuItem
object of the menu item, holder of the radio group.
Use this property to enumerate the other members of the radio group. They can be found
in the Subs collection of the group holder item
which object is returned. This can be useful if you have disabled AutoCheck and want to determine which item from
the radio group was previousely checked - see Checked