HTREEITEM hRoot;

 CString str = "Root"

 hRoot = m_treeCtrl.InsertItem(str,TVI_LAST);

 //添加节点位于hRoot所有孩子节点末尾

 HTREEITEM hChild = m_treeCtrl.InsertItem(str,hRoot);

 //或者

 HTREEITEM hChild = m_treeCtrl.InsertItem(str,hRoot,TVI_LAST);

 m_treeCtrl.DeleteItem(delItem);

 m_treeCtrl.DeleteAllItems();

 m_treeCtrl.SetItemText(m_treeCtrl.GetSelectedItem(),"newNodeName");//修改当前选中节点名为newNodeName

 //获得根节点

 HTREEITEM hRootItem;

 hRootItem = m_treeCtrl.GetRootItem();

 //获得当前节点

 HTREEITEM hCurItem;

 hCurItem = m_treeCtrl.GetSelectedItem();

 //获得hItem的前一个节点

 HTREEITEM hPreItem;

 hPreItem = m_treeCtrl.GetNextItem(hItem,TVGN_PREVIOUS);

 //获得hItem的后一个节点

 HTREEITEM hNextITem;

 hNextITem = m_treeCtrl.GetNextItem(hItem,TVGN_NEXT);

 if(m_treeCtrl.ItemHasChildren(hRoot))//判断某个节点是否有孩子节点

     m_treeCtrl.Expand(hRoot,TVE_EXPAND);//展开或收缩子节点

 m_treeCtrl.SetItemState(hItem,TVIS_SELECTED,TVIS_SELECTED);//设置节点状态为被选中

 m_treeCtrl.SelectItem(hItem);

 //或者

 //TREE控件样式必须设置为TVS_SHOWSELALWAYS

 m_treeCtrl.SelectItem(hItem)//选择该节点

 m_treeCtrl.SetFocus();//设置焦点

 CPoint point;

 GetCursorPos(&point);

 ::ScreenToClient(m_treeCtrl.GetSafeHwnd(),&point);

 UINT uFlags;

 uFlags = TVHT_ONITEM;

 HTREEITEM    hItem = m_treeCtrl.HitTest(point,&uFlags);

 if(hItem && (TVHT_ONITEM & uFlags))

 {}