TQBAction = (qbaAdd, qbaRemove);
function DoAddRemoveLink(Link: TQBLink; Action: TQBAction): Boolean;
Use the DoAddRemoveLink method to add or remove link to the work area. The Link parameter is the TQBLink object, which defines the properties of the link to add or remove. If Action is qbaAdd, then the link, specified by the Link parameter, is being added to the work area, otherwise it's being removed.