treePanel.on({
              //目录树单击事件             'itemclick' : function(view, rcd, item, idx, event, eOpts) {
                  var dirid = rcd.get('id'); //节点id                 var dirtype = rcd.raw.dirtype; //自定义数据         },         //目录树双击击事件             'itemdblclick' : function(view, rcd, item, idx, event, eOpts) {
                  var dirid = rcd.get('id'); //节点id                 var dirtype = rcd.raw.dirtype; //自定义数据         },             //目录数右键事件             'itemcontextmenu' : function(view, rcd, item, idx, event, eOpts) {
                  event.preventDefault();                 this.showTreeItemMenu(rcd, event); //自定义处理函数             },             scope : this         });