Ext之grid增加多行tbar

tbar:[insertButton,'-',updateButton,'-',deleteButton,'-',printButton],
listeners:{
    'render':function(){
	var tbar=new Ext.Toolbar({
	  items:["租用编号：",tbarRentNumber,'-','租户：',tbarName,'-',searchButton]
	});
        tbar.render(this.tbar);
     }
},

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