void clearAll (boolean all) {
public void clearAll (boolean all) {
/*public*/ void clearAll (boolean all) {	checkWidget ();	int hItem = OS.SendMessage (handle, OS.TVM_GETNEXTITEM, OS.TVGN_ROOT, 0);	if (hItem == 0) return;	TVITEM tvItem = new TVITEM ();	tvItem.mask = OS.TVIF_HANDLE | OS.TVIF_PARAM;	clearAll (hItem, tvItem, all);}