+ \brief Constructor.
+
+ Create combobox datum object with datum identifier \a id
+ and parent widget \a parent.
+
+ Parameter \a flags defines behaviour of datum and set of created
+ subwidgets. Default value of this parameter is QDS::All.
+
+ Parameter \a comp specifies the component name which will be used
+ when searching the dictionary item.
+
+ \param id datum identifier
+ \param parent parent widget
+ \param flags datum flags
+ \param comp component