EXtjs中 Window 窗体常用属性

Ext.onReady(function(){
       var _window=new Ext.Window({
             title:"登陆",
             renderTo:Ext.getBody(),
             frame:true,
             plain:true,
             resizable:false,
             buttonAlign:"right",
             closeAction:"hide",
             maximizable:true,
             closable:true,
             bodyStyle:"padding:4px",
             width:310,
             height:230,
             layout:"form",
             lableWidth:45,
             defaults:{xtype:"textfield",width:180},
             items:[{fieldLabel:"帐号"},{fieldLabel:"密码"}],
             buttons:[{text:"确定"},{text:"取消",handler:function(){_window.hide();}}],
             listeners:{
               "show":function(){
                  alert("显示");
               },
               "hide":function(){
                  alert("隐藏");
                  },
               "close":function(){
                  alert("关闭");
               }
             }
             
             })
       _window.show(); 
    })