get Tab Label Visibility
Gets the visibility mode for the Labels in this Tab.
Return
the label visibility mode, one of TAB_LABEL_VISIBILITY_UNLABELED or TAB_LABEL_VISIBILITY_LABELED.
Gets the visibility mode for the Labels in this Tab.
the label visibility mode, one of TAB_LABEL_VISIBILITY_UNLABELED or TAB_LABEL_VISIBILITY_LABELED.