//只要要在treepanel中配置一下兩棵樹之間，兩棵樹要配置
viewConfig:{
plugins :{
ptype:'treeviewdragdrop', },
listeners:{//監聽器
drop:function(node,data,overModel,dropPosition,options){ },
overModel,dropPosition,dropFunction,options){
// if(overModel.get("leaf")){ //目標節點
// / }
}
}
}
