gtk:combo-box-active-iter (combo)

combo -- a gtk:combo-box widget
iter -- the gtk:tree-iter, or nil

Accessor of the active iterator of the combo box. The gtk:combo-box-active-iter function returns iter to point to the current active item, if it exists. The (setf gtk:combo-box-active-iter) function sets the current active item to be the one referenced by iter, or unsets the active item if iter is nil.