nsIDragService
rag ) ; void dragmoved(in long ax, in long ay); native code only!
... void firedrageventatsource(in mozilla::eventmessage aeventmessage); native code only!
...ned in widget/eventmessagelist.h getcurrentsession() returns the current nsidragsession.
...ther types of elements, the element is rendered into an offscreen buffer in the same manner as it is currently displayed.

nsITreeBoxObject
treebody nsidomelement readonly: obtain the treebody content node.